Circuitos integrados

MAX1321ECM+

MAX1321ECM+ - 14-Bit 4-Channel 357ksps Simultaneous-Sampling ADC | Maxim Integrated

The Analog Devices (formerly Maxim Integrated) MAX1321ECM+ is a 14-bit, 4-channel, simultaneous-sampling successive-approximation-register (SAR) analog-to-digital converter in a 48-pin LQFP (7x7 mm) package with a 357 ksps maximum throughput. It supports software-selectable true-differential analog input ranges of ±10 V, ±5 V, and 0 to +5 V on each channel pair, together with 4-/2-channel operating modes for design flexibility. What is an SAR ADC? A successive-approximation-register analog-to-digital converter is a sampling architecture that uses an internal DAC and a comparator to perform a binary search over multiple clock cycles, one bit at a time, yielding a snapshot conversion. SAR ADCs sit within the broader hierarchy of ADC technology -> data converter -> mixed-signal IC -> semiconductor device. The simultaneous-sampling capability of the MAX1321ECM+ makes it distinct from multiplexed ADCs: every enabled channel acquires its analog input at the same instant through per-channel track-and-hold amplifiers, eliminating channel-to-channel skew that would otherwise corrupt multi-phase measurements. Key specifications include ±10 V true-differential inputs (over-voltage protected to ±25 V), 357 ksps aggregate throughput with internal or external clock, an internal 2.5 V or external reference, and per-channel T/H amplifiers. The device interfaces through a 20 MHz SPI/QSPI/MICROWIRE-compatible serial port with a dedicated RDY/INT output for conversion-complete indication. Bipolar and unipolar input modes are software-selected without external hardware changes. The MAX1321ECM+ uses a charge-redistribution SAR core with input protection networks on each analog channel. The built-in T/H front-end and ±25 V over-voltage clamps allow direct connection to industrial ±10 V or ±15 V signal sources without external resistor dividers, while a digital noise-rejection filter rejects mains-frequency interference. Internal or external reference flexibility lets designers balance absolute accuracy against board area. Typical applications include multiphase motor control (simultaneous current and voltage sampling), power-grid synchronization and power-factor correction (three-phase voltage and current monitoring), vibration and waveform analysis (multi-axis accelerometers), and industrial data acquisition requiring coherent sampling across channels. The 5 V analog supply and ±10 V input range directly interface with current transformers, shunts, and line-voltage transducers. Design consideration: Place analog and digital grounds on split planes joined at a single point beneath the exposed pad of the LQFP-48. Use 0.1 µF ceramic decoupling on AVDD, DVDD, and AVDD2 pins; decoupling value and topology should follow the manufacturer datasheet reference schematic. This page consolidates distributor pricing, drop-in alternatives, and layout guidance not always present in the manufacturer datasheet, giving procurement and design engineers a single reference for evaluation, second-sourcing, and PCB integration.

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MAX1323ECM+

MAX1323ECM+ - 14-Bit 526ksps Parallel ADC, 48-LQFP | Maxim Integrated

The Maxim Integrated MAX1323ECM+ is a 14-bit, 526 ksps single-channel analog-to-digital converter with a parallel interface, housed in a 48-pin LQFP (7x7 mm) package. The device operates from a single +5V analog supply, accepts a 0 to +5V unipolar analog input range, and delivers ±1 LSB INL (max) with 78 dB SINAD at 100 kHz input. The high-speed parallel output is byte/word selectable, simplifying connection to 8-bit or 16-bit microprocessors and DSPs. An ADC (analog-to-digital converter) is a mixed-signal IC that samples a continuous analog voltage and converts it into a discrete digital code, forming the bridge between the analog front-end (sensors, amplifiers, filters) and the digital back-end (microcontroller, DSP, FPGA). In the system hierarchy the MAX1323ECM+ sits between the analog signal chain and the digital processor; it is categorized as a successive-approximation register (SAR) ADC with sub-MHz sample rates for industrial data acquisition, instrumentation, and process-control loops. Key features include 526 ksps throughput, 78 dB SINAD, an integrated +2.5V reference, input range scaling resistors, internal or external clock option, and a low-power shutdown mode that drops quiescent current to under 10 µA. The integrated input clamp protects against ESD and out-of-range signals; an input overvoltage of ±25V does not damage the part. Power consumption is approximately 38 mW at full sampling rate. The MAX1323ECM+ uses a charge-distribution DAC and successive-approximation register architecture. A single conversion is completed in 1.9 µs; the parallel output latches the result on the rising edge of RD and remains valid until the next read. The 2.5V internal reference is trimmed to ±2% and can source up to 1 mA for external use. Typical applications include multi-channel data-acquisition boards (paired with analog multiplexers), vibration and strain-gauge instrumentation, motor-control feedback loops, medical patient-monitoring equipment, and process-control analog input modules. In these systems it replaces the slower 12-bit ADCs common in legacy designs while maintaining pin compatibility with the MAX130x and MAX131x families. When designing with this part, place a 0.1 µF ceramic bypass capacitor within 5 mm of the +5V supply pin and a 10 µF tantalum bulk capacitor at the supply entry to suppress digital switching noise. Ensure the parallel bus traces are length-matched to within 25 mm to avoid skew-induced read errors at full speed. This page synthesizes distributor pricing, drop-in alternatives from the MAX131x/MAX132x family, and practical design notes not found in the manufacturer datasheet alone.

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MAX1327ECM+

MAX1327ECM+ - 14-Bit 526ksps Parallel ADC | Analog Devices

The Analog Devices (formerly Maxim Integrated) MAX1327ECM+ is a 526 ksps, single-channel, 14-bit successive-approximation analog-to-digital converter with a high-speed parallel interface, housed in a 48-pin LQFP (7x7 mm) package. It accepts a single-ended analog input within a unipolar input range and delivers 14-bit resolution data on a parallel digital bus. The device targets data-acquisition applications where throughput in the 100 ksps-to-1 Msps band and 14-bit dynamic range are required. The + suffix denotes the lead-free, RoHS-compliant tape-and-reel option supplied by Maxim/Analog Devices. An SAR (successive-approximation register) ADC is a sampled-data converter that uses an internal binary-search algorithm and an internal track-and-hold to digitize a sampled input voltage. Conceptually, the SAR ADC sits at the bottom of a converter hierarchy: ADC -> data converter -> mixed-signal IC -> semiconductor device. Compared with flash and pipelined ADCs of similar throughput, SAR converters typically offer the best trade-off between power consumption, latency (one conversion cycle), and DC accuracy, which is why they dominate industrial process-control, multi-meter, and motor-control front ends. Key features of the MAX1327ECM+ include true 14-bit resolution with no missing codes, an internal track-and-hold, a single +5 V analog supply, software-configurable unipolar/bipolar input ranges via input scaling, and a hardware shutdown pin that drops supply current to microamp levels. Reference input accepts an external 4.096 V reference for system-level scaling, and the parallel interface glues directly to standard 16-bit microcontrollers or DSPs without glue logic. Typical applications of the MAX1327ECM+ include industrial process control, multi-phase motor control, power-grid synchronization, vibration and waveform analysis, weigh scales, and precision instrumentation. The combination of 14-bit resolution at 526 ksps and a 48-LQFP footprint allows designers to use it as the central ADC in motor-control feedback loops, three-phase power-line monitoring, and high-accuracy data loggers. Designers should pay attention to the reference decoupling and PCB layout: place the 4.096 V reference bypass capacitor and the AVDD decoupling within 5 mm of their respective pins, route AVDD and DVDD on separate traces with independent ferrite beads, and keep digital switching currents off the analog ground plane to preserve the 14-bit linearity. Input bandwidth and input-protection components must be sized for the source impedance driving the analog input pin. The MAX1327ECM+ is one of a pin-compatible Maxim ADC family (MAX1316-MAX1319 and MAX1321-MAX1327), enabling identical PCB layout across 12-, 14-, and 16-bit resolution variants. This page synthesizes current distributor pricing from DigiKey/Mouser, same-package alternative options from the MAX1316-MAX1327 family and from cross-brand ADCs in the same LQFP-48 footprint, and design notes not found in the manufacturer datasheet.

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MAX132CNG

MAX132CNG - ±18-Bit Serial ADC with Multi-Slope Integration | Maxim Integrated

The Maxim Integrated MAX132CNG is a CMOS, ±18-bit (plus sign), serial-output analog-to-digital converter (ADC) that uses multi-slope integration to deliver high-resolution conversions up to 100 conversions per second. Housed in a 24-pin PDIP (narrow, 300-mil) through-hole package, the device operates from dual ±4.5V to ±5.5V supplies or a single +5V supply with an external negative rail, and is rated for the 0C to +70C commercial temperature range. An integrating ADC (also called a dual-slope or multi-slope converter) is a type of data converter which performs analog-to-digital conversion by integrating the input signal over a fixed time window, then de-integrating against a reference voltage. ADCs sit in the broader data converter family inside the data acquisition (DAQ) signal chain: sensor -> signal conditioning -> ADC -> digital processing, where they convert real-world analog signals into digital codes for microcontrollers or processors. Key features include ±0.006% full-scale-range (FSR) accuracy at 16 conversions per second, 15 µVRMS low-noise performance, and ±2 pA input current over the ±512 mV full-scale input range (2 µV/LSB). The MAX132 draws only 60 µA in normal operation and drops to 1 µA in sleep mode, making it attractive for low-duty-cycle battery-powered measurement systems. The 4-wire serial interface connects easily to microcontrollers, and the chip includes a programmed output port for an external multiplexer and programmable-gain amplifier (PGA). The internal architecture combines an integrator, integrator-comparator logic, and a serial output shift register with on-chip oscillator and reference buffer. Multi-slope integration reduces conversion time versus classic dual-slope designs while still providing excellent 50 Hz/60 Hz normal-mode rejection, which is critical for industrial weighing and panel-meter applications where mains-frequency noise dominates. Typical applications include precision weigh scales, panel meters, data-acquisition systems, portable battery-powered instrumentation, temperature measurement with cold-junction compensation, and digital multimeter (DMM) front ends. The wide 0C to +70C commercial operating range and sleep-mode current also suit remote telemetry and data-logger designs. When designing with this device, ensure the input common-mode voltage stays within the supply rails and place a 10 uF bypass capacitor close to the supply leads. Because the MAX132 has no on-chip digital calibration, system-level zero and full-scale trim with the on-chip OFFSET and REFERENCE trim pins is recommended for best accuracy. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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MAX132CWG+

MAX132CWG+ - 18-Bit, 100 SPS Multi-Slope ADC | Analog Devices

Analog Devices MAX132CWG+ is an 18-bit plus-sign, serial-output analog-to-digital converter with multi-slope integration, conversion capability up to 100 conversions per second, and a 24-pin wide SOIC package. The converter provides a guaranteed ±512 mV full-scale input range, equivalent to 2 µV per LSB, and uses a simple four-wire serial interface. An ADC is an analog-to-digital converter: a semiconductor that converts a continuously varying analog voltage into a numeric value for processing, measurement, storage, or control. The MAX132 belongs to the multi-slope integrating ADC family. Its multi-slope conversion architecture provides high resolution without the conversion time associated with a conventional integrating ADC, making it useful for precision data acquisition, panel meters, weighing systems, and industrial measurement equipment. The principal specifications available from the verified manufacturer information include an 18-bit plus-sign resolution, up to 100 conversions per second, a ±512 mV full-scale range, and 2 µV per LSB. These characteristics make the MAX132 appropriate when fine input resolution and compact serial communication are more important than very high sampling rates. The four-wire serial interface also simplifies connection to a controller compared with a parallel data bus. The MAX132 family is offered in 24-pin narrow-DIP and wide-SO packages and in commercial and extended-temperature grades. The MAX132CWG+ is identified as the commercial-grade, gull-wing 24-pin SOP variant. The MAX132EWG+ is an extended-temperature counterpart identified in cross-reference information, while the MAX132CWG+T and MAX132EWG+T are tape-and-reel ordering variants rather than materially different converters. Typical applications include data loggers, weigh scales, data-acquisition systems, and panel meters. In these systems, the ADC can digitize a conditioned sensor output and transfer the conversion result over its four-wire serial interface. The ±512 mV input range requires the source to remain within that range, with appropriate conditioning, common-mode treatment, input protection, and reference selection based on the measured signal. Designers should follow the manufacturer data sheet for the exact pin names, electrical limits, reference configuration, conversion timing, and recommended input network. A clean reference voltage and well-controlled analog input are essential because offset, noise, and reference errors can limit the practical accuracy of the stated 18-bit conversion resolution. PCB layout should separate sensitive analog input and reference paths from digital clock and serial-data traces. This page combines the verified manufacturer description, distributor identification, package information, family comparisons, and engineering guidance in one decision-oriented reference. It also distinguishes true device options from tape-and-reel packaging codes so procurement teams can select the correct manufacturer ordering code.

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MAX132CWG+C10203

MAX132CWG+C10203 - 18-Bit+Sign Multi-Slope ADC | Analog Devices

The Analog Devices (formerly Maxim Integrated) MAX132CWG+C10203 is a CMOS 18-bit-plus-sign serial-output analog-to-digital converter (ADC) housed in a 24-pin wide-body SOIC (WSOIC / SOIC-24) package, integrating low-noise multi-slope conversion at 100 samples per second. It features ±512 mV full-scale input range (2 µV/LSB nominal), 100 SPS throughput, 4-wire serial interface, and an industrial commercial temperature grade of 0°C to +70°C. The integrated multi-slope architecture provides higher resolution in shorter conversion windows than classical dual-slope ADCs. Background: an analog-to-digital converter (ADC) translates continuous analog waveforms into discrete digital codes. Integrating ADCs such as the dual-slope and multi-slope families average input noise over a fixed integration window, naturally rejecting 50 Hz / 60 Hz mains interference. Multi-slope integration is a refined variant that adds auxiliary run-up and run-down phases to reduce conversion time while preserving the inherent noise-rejection characteristics of dual-slope designs. The MAX132 family sits in the precision slow-speed ADC segment of the data-converter hierarchy: ADC -> data converter -> signal-chain IC -> semiconductor. Key features of the MAX132CWG+C10203 include: 18-bit + sign resolution with 2 µV/LSB scaling, ±512 mV true bipolar input range, 100 SPS conversion rate, simple 4-wire (clock, data, CS, RDY) synchronous serial interface, ±5 V analog supply operation, low conversion noise, on-chip oscillator, and integrated digital filtering. The wide 24-pin SO footprint gives generous analog/digital isolation on the integrated PCB, and the +C10203 suffix denotes factory programming of the calibration constants for the specific lot. Typical applications include precision weigh scales, industrial data loggers, panel meters, temperature measurement systems, and bench-top digital multimeters. Because the MAX132 natively rejects line-frequency noise and provides ±18-bit resolution over the ground, it is the classic fit for load-cell signal chains and process-control front ends. Design consideration: the MAX132 requires external integration capacitors, reference capacitors, and a clock source as documented in the Maxim datasheet. Decouple AVDD and DVDD with 10 µF / 0.1 µF pairs near the IC and route the analog input traces differentially to preserve CMRR at the 2 µV/LSB level. Unique value: this page consolidates Analog Devices and Maxim distributor pricing, drop-in same-package alternatives (MAX132 family tape-and-reel variants), and practical weigh-scale design notes not duplicated in the merged datasheet.

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MAX132ENG+

MAX132ENG+ - 18-Bit 100SPS Serial ADC | Analog Devices

Analog Devices MAX132ENG+ is an 18-bit, single-input, multi-slope analog-to-digital converter with a serial interface, conversion rate up to 100 samples per second, and a 24-pin PDIP package. It operates from a 4.5 V to 5.5 V supply, accepts one analog input, and is specified as a dual-polarity, industrial-temperature through-hole device. According to the manufacturer datasheet, it provides ±0.006% full-scale accuracy at 16 conversions per second, 15 µVrms noise, 60 µA normal-operation supply current, and 1 µA sleep-mode supply current. An ADC is a data-conversion IC that transforms an analog voltage into a numeric value for measurement, control, display, or storage. The MAX132 belongs to the ADC and DAC hierarchy within interface integrated circuits. Unlike flash or successive-approximation converters, its multi-slope architecture integrates the input over a controlled interval, supporting high resolution with low conversion speed. The MAX132 is therefore most relevant to precision instrumentation rather than high-bandwidth signal capture. The converter's 18-bit resolution represents a 262,144-code theoretical range. Its serial I/O interface can provide programmed output for multiplexed measurements and programmable-gain operation, reducing the number of external analog channels and conditioning components required in a measurement system. A 100 conversions-per-second ceiling supports responsive control, while the lower accuracy rate specified at 16 conversions per second reflects multi-slope conversion behavior. Low power is a central benefit. Normal-operation supply current is 60 µA, while sleep mode reduces it to 1 µA. The datasheet also reports 15 µVrms low noise and ±2 pA input current. These characteristics suit battery-powered or intermittently operated instruments because the converter can reduce average current through its sleep state without requiring an external system power switch. Typical applications include data loggers, weighing scales, data-acquisition systems, panel meters, precision process measurement, and low-frequency industrial sensing. The manufacturer identifies these uses because the MAX132 balances high resolution, compact size, and low power rather than emphasizing rapid sampling or high-bandwidth signal processing. PCB design should preserve analog signal integrity by keeping the analog input path short and placing input and reference bypass capacitors close to their associated pins. Designers should also verify supply-voltage limits and serial-interface timing before replacing an existing MAX132-based design, particularly because the long-established 24-pin PDIP footprint simplifies through-hole prototyping and legacy maintenance. This page combines the verified manufacturer specifications, distributor pricing and inventory information, and cross-reference evidence with engineering-focused guidance on accuracy, power management, applications, and drop-in sourcing. The MAX132ENG+ product listing is intended to support direct purchasing and informed component selection rather than simply reproducing raw catalog fields.

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MAX132EWG+

MAX132EWG+ - 18-Bit 100 SPS ADC | Maxim Integrated

The Maxim Integrated MAX132EWG+ is an 18-bit plus-sign, serial-output analog-to-digital converter with one pseudo-differential input, multi-slope integration, and a conversion rate up to 100 conversions per second. It operates from a 4.5 V supply and supports a ±512 mV full-scale input range with 2 µV per LSB resolution. The device is offered in a 24-pin SOIC package for surface-mount instrumentation, process-control, and precision measurement systems. An ADC is an interface IC that converts an analog voltage into a digital code for processing, measurement, display, or control. The MAX132 belongs to the integrating ADC family, where continuous integration of the input voltage averages noise and rejects periodic interference. Its multi-slope integration architecture provides high-resolution conversion in less time than a standard integrating ADC while retaining the benefits of noise averaging. Key features include 18-bit plus-sign resolution, a maximum conversion rate of 100 SPS, and a 4-wire serial interface. The ±512 mV pseudo-differential input range provides 1.024 V of total span around the selected reference relationship, while the specified 2 µV/LSB resolution establishes the converter’s nominal input increment. Operating temperature is specified from −40°C to +85°C for the industrial-grade ordering code. The multi-slope conversion cycle integrates the analog input over multiple intervals and then measures the resulting reference charge. This architecture reduces the influence of input noise and periodic interference compared with single-slope measurement. The serial output supports a compact four-wire connection to a microcontroller or logic system, while the plus-sign output format preserves the polarity of measurements around the conversion range’s center. Typical applications include industrial process transmitters, laboratory measurement instruments, sensor-interface modules, and embedded data-acquisition systems. Designers should size the input network and reference circuitry for noise, establish the correct common-mode relationship for pseudo-differential operation, and allocate sufficient timing between serial clock and data signals. For PCB implementation, keep the input and reference paths compact, place their associated capacitors close to the device, and provide a continuous ground plane. Because conversion accuracy depends on reference quality and layout symmetry, use short traces and avoid routing sensitive analog nets beneath digital clocks or switching-supply nodes. This page combines the manufacturer’s operating specifications, orderable family information, package details, comparison guidance, and practical PCB design notes. It also distinguishes genuine drop-in family options from devices with different packages so engineers can assess PCB compatibility before ordering a replacement.

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MAX132EWG-T

MAX132EWG-T - 18-bit Serial ADC, Multi-Slope, 24-SOIC | Maxim

The Maxim MAX132EWG-T is a CMOS 18-bit plus sign, serial-output analog-to-digital converter (ADC) housed in a 24-pin SOIC wide-body (WSOIC) package. The "-T" suffix designates the tape-and-reel packaging option and the part uses multi-slope integration, allowing up to 100 conversions per second with guaranteed ±512 mV full-scale input range at 2 uV/LSB resolution. The Maxim part delivers high-resolution conversions in less time than standard integrating ADCs by combining the noise rejection of dual-slope conversion with faster settling. An ADC (analog-to-digital converter) is a data-acquisition component that samples continuous analog voltages and outputs discrete digital codes for processing by microcontrollers, DSPs, or FPGAs. Multi-slope integrating ADCs sit in the precision-measurement sub-category of data converters; they trade raw speed for excellent normal-mode noise rejection (integrator nullifies 50 Hz/60 Hz line interference) and high effective resolution at low input bandwidths. The MAX132 family targets panel meters, digital multimeters, weigh scales, and industrial sensors where 18-bit plus sign dynamic range is required. Key features include 18-bit plus sign resolution, ±512 mV true bipolar input range, 2 uV/LSB scale factor, 100 conversions/second maximum throughput, 4-wire SPI-compatible serial interface, low conversion noise, and external integration capacitor / reference configuration. The serial interface minimises pin count while allowing straightforward connection to modern microcontrollers. The 24-SOIC wide-body package simplifies hand prototyping and rework relative to smaller surface-mount alternatives. Architecturally, the MAX132 uses a charge-balancing integrator plus multi-slope run-down converter with automatic zero and full-scale calibration cycles. The MAX132EWG-T variant supplies the commercial-grade operating temperature range and is supplied on tape and reel for high-volume assembly. Compared with sigma-delta ADCs of similar resolution, the multi-slope topology offers faster response to input steps at the cost of requiring external integration components. Typical applications include digital panel meters, precision weigh scales, industrial process transmitters, temperature measurement with thermocouple/RTD front ends, and laboratory instrumentation. The bipolar ±512 mV input range makes it straightforward to digitize small differential signals directly without external instrumentation amplifiers. A key design consideration is that integrating ADCs require precision external integration components (typically polyester or polypropylene capacitors) and a low-drift reference; choose C0G/NP0 ceramic bypass capacitors directly at the supply pins and a star-ground layout to keep digital switching noise away from the analog integrator. This page synthesizes distributor pricing, pin-compatible variants in the MAX132 family, and practical design guidance not found in the bare manufacturer datasheet.

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MAX133CMH+

MAX133CMH+ - 3.75-Digit 20 CPS ADC | Maxim | Multimeter

The Maxim Integrated MAX133CMH+ is a 3.75-digit integrating analog-to-digital converter with a 20-conversion-per-second sampling rate, 50 ms conversion time, and ±40,000-count internal resolution. It is supplied in a 44-pin MQFP package measuring 10 mm by 10 mm. The converter is designed specifically for 3.75-digit digital multimeters and related data-acquisition systems. An integrating analog-to-digital converter is a voltage-to-digital conversion IC that integrates an input voltage over a fixed measurement interval. This measurement category belongs to the broader ADC hierarchy, which supports instrumentation, data logging, weighing, process monitoring, and panel-meter designs. Unlike successive-approximation ADCs, integrating converters are commonly selected when low-frequency measurements and specific front-end characteristics are important. The MAX133 provides a nominal 3.75-digit indication with internal resolution of ±40,000 counts. Its extra guard digit supports autozero or tare operations that reduce the effect of offset when displaying a 4,000-count measurement, providing resolution equivalent to one tenth of a displayed count. Its 50 ms conversion time corresponds to the verified sampling rate of 20 conversions per second. The one-channel integrating architecture is tailored for direct measurement and front-panel instrument use. The MAX133 and MAX134 form closely related integrating ADC families for digital multimeters, data loggers, and weigh scales. Their functional emphasis is measurement resolution rather than high-speed signal acquisition. Because the MAX133 is designed around the behavior of a 3.75-digit meter, its input network, reference arrangement, integration period, and display-processing strategy must be evaluated together when designing a new analog measurement board. Typical uses include handheld and bench digital multimeters, panel meters, weighing instruments, laboratory data loggers, and low-frequency industrial monitoring systems. The MAX133 can support the central measurement path where a regulated reference, input conditioning, and the meter’s display and controls are coordinated. The 44-pin MQFP package provides the pins required for analog inputs, reference connections, digital interface signals, supply rails, and associated control functions. Designers should preserve the recommended analog and reference layout because integrating converters remain sensitive to reference noise, grounding, leakage, and unwanted input signals during the 50 ms conversion interval. Input filtering should be selected for the intended source impedance rather than for the highest possible bandwidth. Power sequencing, bypass placement, and separation between the measurement input and digital interface also deserve attention. This page consolidates verified manufacturer and distributor information with practical application guidance, package-aware alternatives, comparison parameters, and design notes. It also identifies where source data does not establish a complete pinout, electrical limit, or verified drop-in cross-reference rather than filling those gaps with assumptions.

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MAX133CPL+

MAX133CPL+ - 3.75-Digit 50ms DMM ADC | Analog Devices

The Analog Devices MAX133CPL+ is a 3.75-digit integrating analog-to-digital converter for digital multimeters and data-acquisition systems, with an internal resolution of ±40,000 counts, a 50 ms conversion time, and a 40-pin PDIP package. The additional guard digit supports autozero or tare operations on a 4000-count displayed reading at one-tenth of a displayed count. An integrating ADC is a specialized data-conversion category used where a measured analog input is converted by integrating it over a defined interval. The MAX133 belongs to the broader ADC → data-converter IC → data-acquisition semiconductor hierarchy. Its integration-based measurement method and multi-pin mixed-signal interface are intended for precision panel-meter and multimeter products rather than general-purpose high-speed signal acquisition. The primary verified characteristics are 3.75-digit resolution, ±40,000-count internal resolution, a 50 ms conversion cycle, and a commercial operating grade of 0°C to +70°C. Distributor listings identify the device as a 40-pin PDIP, through-hole part. The Analog Devices product page lists the MAX133 as a production 3.75-digit DMM circuit and provides the manufacturer datasheet, documentation, tools, and product-selection resources. The MAX133 family is designed for integrating A/D converters used in 3.75-digit multimeters, data loggers, and weigh scales. The guard-digit feature is particularly useful for measurement systems that compensate offset or residual noise during autozero or tare operations. Because conversion completes in 50 ms, the device is appropriate for slow-changing measurements where stable integration is more useful than high sampling throughput. A typical implementation places the MAX133 at the center of a digital meter front end, where it digitizes a conditioned differential measurement while supporting zero or tare correction. Its through-hole PDIP-40 package favors leaded, serviceable, and instrument-style assemblies. The package also requires careful routing of the analog input, reference, supply, digital-control, and display-interface signals across 40 pins. The principal design consideration is that the MAX133 is a dedicated DMM conversion circuit rather than a general-purpose ADC. System designers should follow the manufacturer datasheet for input range, reference requirements, input impedance, excitation behavior, and display-interface timing. PCB layout should preserve a quiet analog signal path, provide stable reference routing, and place bypass and input-network components close to their associated pins. This page consolidates verified manufacturer and distributor information, same-family replacement guidance, package and sourcing details, and practical selection considerations. It also distinguishes documented facts from electrical data that was not present in the supplied records, helping engineers make a preliminary design decision before reviewing the complete MAX133 datasheet.

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MAX133EPL+

MAX133EPL+ - 3-3/4 Digit DMM A/D Converter, 40-Pin PDIP | Maxim Integrated

The Maxim Integrated MAX133EPL+ is a specialized 3-3/4 digit digital multimeter (DMM) circuit that integrates an A/D converter with multiplexed seven-segment display drive, delivering an internal resolution of +/-40,000 counts, a 50 ms conversion time, and an extra guard digit, all in a 40-pin PDIP through-hole package rated for industrial temperature. What is a DMM A/D converter? A DMM A/D converter is a dedicated integrating (dual-slope) analog-to-digital converter optimized for panel-meter and digital-multimeter instrumentation rather than general-purpose signal acquisition. It sits in the hierarchy of ADC > integrating ADC > data-acquisition converter > data-converter IC, and is paired with a display driver so that a front panel can show a numeric reading directly without a host microcontroller having to multiplex the LED digits. Key features of the MAX133 include +/-40,000-count internal resolution with a 4000-count displayed reading, a guard digit that allows autozero or tare to be performed to one-tenth of a displayed count, and a 50 ms conversion time suitable for continuously refreshed panel meters. The device is a single-channel converter with differential-capable measurement inputs and is offered in an industrial temperature grade in a through-hole PDIP-40 package. Technically, the MAX133 integrates a proprietary-method integrating ADC rather than a successive-approximation or sigma-delta architecture, which inherently rejects periodic noise from mains-derived supplies and provides good averaging behaviour for slowly changing inputs. The internal resolution exceeds the displayed digit count because the extra guard digit is used for autozero and tare correction rather than for extra display digits, improving measurement accuracy without complicating the display. Typical applications include digital panel meters, handheld and bench multimeters, data loggers, weigh scales, and industrial process monitoring instruments where a stable, readable numeric display is required. Because the MAX133 drives the display segments and digit commons directly, the instrument designer can build a meter front end with very few external components and no microcontroller in the measurement path. A key design consideration is that the MAX133 family is a mature, through-hole instrument-circuit family rather than a high-speed converter; design effort should focus on analog input conditioning, reference selection, and display multiplexing rather than on sampling-rate limitations. For new designs needing more resolution, more channels, or faster conversion, modern sigma-delta or SAR converters plus a separate display driver may be a better architectural fit. This page consolidates distributor pricing, verified drop-in alternatives from the same MAX family, and practical design notes that are not repeated on distributor catalogue pages, giving engineers a single place to qualify the MAX133EPL+ for existing panel-meter and DMM designs.

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MAX13487EESA+

MAX13487EESA+ 500kbps RS-485/RS-422 Transceiver

The Analog Devices MAX13487EESA+ is a 5 V, half-duplex, 500 kbps RS-485/RS-422-compatible interface IC with one driver, one receiver, automatic direction control, and ±15 kV ESD protection in an 8-SOIC package. Designed for industrial data links, it combines differential bus communication with automatic transmitter-receiver switching, reducing the need for a separate isolated direction-control channel. An RS-485/RS-422 transceiver is an interface IC that converts between single-ended logic signals used by a controller or MCU and differential signals carried across a noisy, long-distance bus. It belongs to the communications-interface hierarchy: interface IC → differential transceiver → RS-485/RS-422 interface. One transceiver supports bidirectional half-duplex communication, so the same pair of bus conductors carries traffic in either direction, but only one side transmits at a time. The MAX13487EESA+ provides 500 kbps operation, a +5 V supply, automatic direction control, hot-swap capability, and ±15 kV ESD protection according to the manufacturer datasheet. AutoDirection control is particularly useful when the system has no convenient GPIO for asserting driver enable. Hot-swap capability helps prevent false bus transitions during startup and live insertion, while ESD protection improves robustness against electrostatic discharge encountered in industrial environments. The MAX13487EESA+ is suited to RS-485-compatible multidrop networks, RS-422-compatible point-to-point links, industrial control systems, instrumentation, building automation, and communications equipment where a compact 500 kbps half-duplex transceiver is required. The device is available in an 8-SOIC package, making it appropriate for conventional PCB assembly and replacement workflows. When designing around the MAX13487EESA+, verify the complete datasheet pinout, termination requirements, bus topology, grounding, and supply decoupling before production release. The automatic direction-control architecture should be reviewed for compatibility with the system’s bus timing and fault-recovery expectations. This page combines verified manufacturer and distributor information with package, application, and replacement-oriented engineering guidance.

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MAX134CMH+

MAX134CMH+ - 3.75-Digit 50ms DMM ADC | Maxim Integrated

The Maxim Integrated MAX134CMH+ is a 3.75-digit integrating analog-to-digital converter designed for 3.75-digit digital multimeters, data loggers, and weigh scales. It provides an internal resolution of ±40,000 counts, a 50 ms conversion time, and operates in a 44-pin MQFP package measuring 10 mm by 10 mm. According to the Analog Devices MAX134 product page, an additional guard digit supports autozero or tare of a 4000-count displayed reading to one tenth of a displayed count. A digital multimeter ADC is a specialized interface integrated between an analog measurement circuit and a digital display or processor. In the product hierarchy, the MAX134 is an integrating ADC, which is a type of data-converter IC used to transform a continuously varying input voltage into a digital measurement. Integrating converters are especially useful in panel-meter and instrument designs because they support accurate ratiometric measurements with relatively simple external circuitry. The MAX134 family combines 3.75-digit measurement resolution with a 50 ms conversion interval. Its ±40,000-count internal scale provides additional numerical headroom for guard-digit operations, while the 4000-count displayed range corresponds to a standard 3.75-digit instrument. The 44-terminal square QFP package also provides more board area than a small-outline package, making it practical for instruments where analog routing and component access are more important than minimum PCB area. The MAX133 and MAX134 are integrating analog-to-digital converters for 3.75-digit multimeters and data-acquisition systems such as data loggers and weigh scales. The supplied manufacturer material states that the devices differ only in an electrical characteristic that is not fully reproduced in the search excerpt, so engineers should consult the complete MAX134 data sheet before selecting MAX133 or using either device outside the documented measurement architecture. Typical uses include handheld and bench multimeters, panel meters, process-monitoring instruments, load-cell and weigh-scale interfaces, and low-rate data loggers. These applications benefit from the 50 ms conversion time and guard-digit capability because the converter is intended to deliver stable displayed readings rather than high-speed waveform acquisition. The main design consideration is board implementation. Because the supplied web data identifies a 44-pin MQFP but does not provide a complete verified pin-by-pin description, designers should use the manufacturer data sheet and its reference circuit rather than infer connectivity from generic QFP libraries. Input filtering, reference selection, display drive support, and analog grounding directly influence measurement repeatability. This product page combines verified manufacturer and distributor information with application guidance, pricing context, comparison parameters, and package-specific validation notes. It also distinguishes electrically useful alternatives from suffix-only packaging variants to prevent unsafe replacement assumptions.

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MAX134CPL+

MAX134CPL+ - 3.75-Digit Dual-Slope ADC | Analog Devices

The Analog Devices MAX134CPL+ is a dedicated 3.75-digit digital multimeter circuit with a 20 samples-per-second conversion rate, proprietary dual-slope conversion, BCD output, and a 40-pin PDIP package. Designed specifically for digital multimeter signal conditioning, it integrates the measurement functions required to produce stable three-and-three-quarter-digit results for panel instruments and portable meters. The device is a single-channel ADC solution rather than a general-purpose high-resolution converter. A digital multimeter circuit is a specialized mixed-signal front end that converts an unknown analog input into a calibrated numeric representation suitable for a meter display. In the electronics hierarchy, the MAX134CPL+ belongs to the ADC family, combines analog measurement circuitry with digital processing, and ultimately belongs to the broader data-converter and signal-processing semiconductor category. Its 3.75-digit resolution and dual-slope operating principle are optimized for measuring direct-current voltage, resistance, and related quantities in a digital multimeter. The primary feature set includes one analog input channel, a proprietary conversion method, a 20 samples-per-second conversion rate, and direct BCD-compatible output. The 3.75-digit format provides 3,999-count resolution, while the 40-pin PDIP package provides 40 accessible connections through-hole for straightforward instrumentation prototyping. Its commercial temperature grade and through-hole construction distinguish it from surface-mount-only mixed-signal converters and make it particularly accessible for laboratory and instrument development. MAX134CPL+ is an application-specific converter rather than a conventional successive-approximation ADC. A dual-slope conversion averages the input over a defined integration interval, which is a common technique for suppressible noise in slowly changing measurements. The verified distributor information identifies the conversion method as proprietary and confirms single-channel operation, 20 sps performance, dual-slope operation, BCD output, and the 40-pin PDIP format. Typical uses include handheld and bench-top digital multimeters, panel meters, production-line test equipment, and educational laboratory instruments. A designer can use the device where a readable three-and-three-quarter-digit result and a straightforward DIP footprint are more valuable than the channel count or resolution of a general-purpose ADC. Its 20 sps rate is suitable for slow-changing values but is not intended for high-speed waveform acquisition. Designers should verify the complete electrical limits, recommended input network, reference circuit, display interface, and calibration procedure in the manufacturer datasheet before production. Because the supplied data does not expose a complete verified pin table or reference-design schematic, engineers should not infer pin functions from generic ADC layouts; the 40-pin package and device behavior must be checked directly against the official MAX134 documentation. This page consolidates the verified manufacturer and distributor facts for the MAX134CPL+, including its 3.75-digit architecture, 20 sps conversion rate, BCD output, PDIP-40 mechanical format, current pricing references, same-family drop-in candidates, and practical design considerations. It is intended as an engineering selection aid that is more transparent than a distributor title or search-result summary.

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MAX134EPL+

MAX134EPL+ - 3.75-Digit DMM ADC | Maxim Integrated | 40-DIP

The Analog Devices MAX134EPL+ is a proprietary-method, 3.75-digit digital-multimeter analog-to-digital converter with a 4-bit ADC output and 40-pin PDIP package. The verified product data identifies an industrial temperature grade, a 5 V supply, through-hole rectangular DIP construction, and operation from -40°C to +85°C. It is designed as the conversion core in a 3½-digit DMM rather than as a general-purpose waveform converter. A DMM ADC is a specialized analog-to-digital converter optimized for stable readings from meters, resistive dividers, and current-shunt inputs. Its measurement chain converts an analog voltage or resistance-derived voltage into a multiplexed digital result for a display or controller. The MAX134 evaluation kit demonstrates this use case by measuring volts, ohms, or milliamps and displaying results on a 4-digit LCD under control of a MAXQ2000 microcontroller. The MAX134EPL+ provides a 3.75-digit measurement format and a proprietary conversion method, making it appropriate for panel meters, laboratory instruments, service equipment, and industrial readouts that prioritize decimal display resolution rather than high-speed sampling. The verified distributor listing classifies the device as an ADC/DAC for special-purpose 3-digit DMM circuits, while the manufacturer product page describes the MAX134 family as a production 3¾-digit DMM circuit. Its 40-pin PDIP package exposes the dedicated functions required by the DMM signal path and associated control circuitry. Through-hole construction also suits repairable industrial and laboratory instruments, although the larger 40-pin footprint requires more board area than modern mixed-signal packages. The exact pin assignments, reference requirements, acquisition time, input architecture, and electrical limits must be confirmed against the manufacturer datasheet before layout or replacement qualification. Typical uses include digital voltmeters, resistance meters, milliammeters, panel instruments, and educational measurement platforms. In each case, the MAX134 performs the core measurement conversion while external analog switching, reference components, display electronics, and control logic complete the instrument. Because its output is optimized for DMM measurements, it should not be assumed interchangeable with a general-purpose ADC without confirming resolution, conversion timing, interface protocol, reference voltage, and pinout. For a new design, use the manufacturer MAX134 documentation and evaluation-kit schematic as the primary references. Confirm the analog input range, front-end multiplexing, reference accuracy, LCD-driving interface, grounding, and bypass requirements before layout. If replacing MAX134EPL+, verify both the 40-pin PDIP footprint and pin-by-pin behavior; package similarity alone does not establish compatibility. This page consolidates verified manufacturer and distributor information, distinguishes the component from generic ADCs, and adds practical selection and sourcing guidance beyond the basic catalog entry.

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MAX135CPI+

MAX135CPI+ - 15-Bit Low-Power ADC | Analog Devices

Analog Devices MAX135CPI+ is a CMOS, 15-bit binary-output analog-to-digital converter with a parallel interface, differential input, and 28-pin PDIP package. It is tested at 16 conversions per second and can operate at up to 6 times that rate, while the manufacturer describes Super LSBs with data averaging for up to 18-bit resolution. The converter uses multi-slope integration to provide low noise and high resolution without the conversion time of a standard integrating ADC. An ADC is a mixed-signal semiconductor that converts an analog voltage into a digital code for processing, measurement, or control. The MAX135 belongs to the ADC family, and more specifically to the low-power CMOS multi-slope ADC category. Its parallel binary output provides multiple data lines, making the device suitable for systems that need a sampled measurement presented to a digital bus, microcontroller, or dedicated control logic. Key features include 15-bit binary output, differential analog input, 16-SPS tested operation, operation at up to 6 times the tested rate, and up to 18-bit resolution using Super LSBs with data averaging. The verified manufacturer information also identifies a supply current of 125 µA and a 28-pin PDIP package. These characteristics emphasize low power, low-noise conversion rather than high-speed sampling. The multi-slope integration architecture is the device’s principal technical feature. According to the Analog Devices product page, it provides low noise and high resolution in less time than standard integrating ADCs. Super LSBs and data averaging extend usable resolution beyond the nominal 15-bit output, although system accuracy still depends on the analog front end, reference source, clock, input filtering, and layout quality. The parallel interface provides a direct digital connection for suitable embedded measurement systems. Typical uses include industrial process measurement, laboratory instrumentation, low-power sensor acquisition, battery-operated portable equipment, and embedded measurement systems that can accept a parallel ADC output. The MAX135CPI+ is especially relevant where a low conversion rate, low supply current, differential input, and high-resolution averaging are more important than rapid sampling or a compact surface-mount package. Designers should pay particular attention to analog grounding, input filtering, reference stability, and acquisition timing. The 28-pin PDIP package is through-hole rather than a compact SMD package, so board space and connector availability should be checked before design commitment. Verify the complete electrical limits, pin names, timing requirements, and application circuit directly in the manufacturer datasheet before layout. This page combines verified distributor catalog information, the official Analog Devices product overview, application-oriented guidance, and an honest drop-in replacement assessment. It is intended to help engineers locate the datasheet, understand the converter’s architecture, compare meaningful variants, and plan a power-conscious parallel-interface measurement design.

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MAX135CWI

MAX135CWI - 15-Bit Low-Power ADC with Parallel Interface

The Analog Devices (formerly Maxim Integrated) MAX135CWI is a 15-bit, low-power CMOS analog-to-digital converter (ADC) with a parallel interface, housed in a 28-pin wide-body SOIC (WSOIC-28 / SOIC-Wide-28) package. It performs single-channel conversions at up to 16 samples per second in its specified operating mode, and combines a multi-slope integrating architecture with Super LSBs to deliver effective 18-bit-class noise performance when the host averages successive conversions. An integrating ADC (also called a dual-slope or multi-slope converter) is a class of analog-to-digital converters that integrates the unknown input for a fixed time, then de-integrates against a known reference while counting clock pulses. Multi-slope variants like the MAX135 extend the basic dual-slope topology with additional integration phases that cancel dielectric-absorption errors and high-order integrator non-idealities. In the broader taxonomy the MAX135 belongs to the integrating-ADC family of ADCs, which sits under the data-converter category of mixed-signal ICs in power-management and signal-conditioning systems. This architecture is naturally suited to high-resolution, low-frequency measurements where noise rejection (especially 50 Hz/60 Hz line-frequency rejection) outweighs conversion speed. Key differentiating specifications include: 15-bit binary resolution (extending to ~18 bits with averaging), 16 conversions-per-second guaranteed throughput, dual-polarity differential input (typically +/- supply rails), low 125 uA typical supply current, single +5 V analog supply with the same supply also powering the parallel digital interface, and an on-chip oscillator that removes the need for an external clock. The WSOIC-28 package has an exposed thermal pad for improved heat spreading and a wide body that simplifies hand-soldering and rework. The MAX135 uses Super LSB (least significant bit) sub-LSB information and on-chip digital averaging to achieve 18-bit effective resolution. The integrating topology provides inherent rejection of mains-frequency noise (both 50 Hz and 60 Hz), making the part suitable for direct connection to slow analog signals such as thermistor bridges, strain-gauge load cells, pH probes, and other low-bandwidth precision analog-front-ends. The chip-select and read-strobe logic supports direct connection to 8-bit or 16-bit parallel microports without external glue logic. Typical applications include digital panel meters and bench-top multimeters, industrial process-control analog input modules, weigh-scale and force-measurement signal chains, precision temperature-measurement (RTD and thermocouple) front-ends, and battery monitoring in portable test equipment. The wide input range and parallel data bus also simplify interface to legacy microcontrollers and FPGA-based data acquisition (DAQ) front-ends. When designing with the MAX135, observe that the integrating topology requires the input to remain stable during the integration window; add an input buffer (op-amp follower) for high-source-impedance sensors. Use a clean analog ground plane and decouple VDD with both 10 uF bulk and 100 nF ceramic caps placed within 10 centimetres of the supply pad. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, including parametric proximity scoring and same-brand-first alternative ordering for engineers sourcing the MAX135CWI today.

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MAX135EPI+

MAX135EPI+ - 15-Bit Low-Power Parallel ADC | Maxim Integrated

The Maxim Integrated MAX135EPI+ is a low-power, 15-bit CMOS analog-to-digital converter with a parallel binary output interface, a 28-pin PDIP package, and operation from a 4.5 V supply. It is designed for precision measurement systems that require moderate conversion throughput, low power consumption, and direct parallel data capture. The device is a single-channel ADC according to the manufacturer product description, although distributor listings identify the product family as a dual-channel ADC. The MAX135EPI+ uses multi-slope integration to reduce noise and improve resolution without the conversion time associated with a conventional successive-approximation ADC. Its parallel interface supports straightforward connection to microcontrollers, programmable logic, data converters, and laboratory measurement equipment. The industrial-temperature designation makes the part appropriate for equipment operating across extended industrial temperature conditions. The MAX135EPI+ is supplied in a through-hole 28-pin PDIP package, allowing conventional PCB assembly and socket-based prototyping. The exact reference voltage, conversion timing, input range, and electrical limits should be confirmed in the MAX135 manufacturer datasheet before final design release. According to the Analog Devices MAX135 product page, the device is a CMOS 15-bit binary-output ADC using multi-slope integration, with tested conversion performance of 16 conversions per second. The product is suitable for industrial process-control instrumentation, precision sensor interfaces, laboratory data-acquisition systems, and embedded measurement platforms where a parallel ADC is preferable to a serial-interface converter.

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MAX135EWI

MAX135EWI - 15-Bit Multi-Slope Parallel ADC, 16 CPS | Maxim

The Maxim Integrated MAX135EWI is a CMOS 15-bit, binary-output analog-to-digital converter with a parallel digital interface, delivering 16 conversions per second in a 28-pin wide SOIC (gull-wing) surface-mount package. It uses a multi-slope integration conversion technique that achieves 15-bit resolution with better noise rejection than a standard single-slope integrating ADC, and it is specified for the extended industrial temperature grade. An ADC (analog-to-digital converter) is a data-conversion IC that translates a continuous analog voltage into a discrete digital code for processing by a microcontroller, DSP, or logic device. The multi-slope integrating ADC is a refinement of the integrating converter type: instead of measuring a fixed integration period once, it integrates the input for a fixed phase, measures a residual, then integrates again with switched reference current for a shorter, corrected phase. This multi-slope action rejects both 50 Hz and 60 Hz line noise far better than a single-slope design while still completing conversions quickly. In the wider hierarchy, the MAX135EWI is a data-converter IC in the ADC/DAC class of analog-to-digital converters. Key features of the MAX135EWI include 15-bit resolution on a single analog input, a parallel binary output word that can be read directly by standard parallel buses, and a tested conversion rate of 16 conversions per second. Because the conversion rate is modest, the part is intended for slow-moving analog signals such as temperature, pressure, load-cell bridge outputs, and slow sensor waveforms rather than for audio-band or waveform digitization. Internally, the converter combines an analog front end with switched-reference current sources, a comparator, a counter, and control logic that sequences the multi-slope conversion. The parallel output eliminates the need for a serial interface and allows the host processor to latch the result with a simple read strobe. Low-power CMOS construction keeps supply current low enough for battery and portable instrumentation, while the wide 28-SOIC footprint keeps the part on standard surface-mount assembly lines. Typical uses include industrial process-control loops, thermocouple and RTD front ends, weigh scales and load-cell instrumentation, battery-powered data loggers, medical monitoring equipment, and general test and measurement instruments where a slow but accurate digital reading of a slowly varying analog quantity is required. The key design consideration is noise: the multi-slope architecture and the reference source determine the achievable resolution, so the reference must be low-noise and decoupled, the analog input must be protected from noise pickup, and the parallel output bus must be properly terminated or latched by the host logic. Use the pin-description table in the manufacturer datasheet when assigning PCB tracks and connector pins. This page consolidates the manufacturer device data, the available drop-in replacements in the same 28-SOIC footprint, and practical design guidance into one engineering reference that goes beyond the datasheet ordering table.

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MAX1361MEUB+

MAX1361MEUB+ - 10-Bit 4-Ch 150ksps ADC/Supervisor | Maxim

The Analog Devices (formerly Maxim Integrated) MAX1361MEUB+ is a 4-channel, 10-bit, low-power analog-to-digital converter (ADC) with a 2.048 V internal reference and a digitally programmable window comparator that produces an SMBus alert response. Housed in a 10-pin μMAX (uSOP) package, it supports input voltages up to 3.6 V and specified operating temperature range of -40 °C to +85 °C. The SAR architecture delivers up to 150 ksps conversion rate while drawing only microamp-level supply current, enabling long-life battery-powered monitoring designs. A system monitor (also called an analog supervisor or ADC-with-window-comparator) is an integrated data-acquisition IC that combines a multi-channel ADC, a precision voltage reference, and a programmable threshold detector in a single die. It continuously digitizes analog system parameters (rail voltages, currents via shunt, temperatures via remote diodes) and asserts a hardware interrupt when any reading falls outside a user-defined window. System monitors sit at the bottom of the power-management hierarchy, above simple comparators and below full system-on-chip PMICs. The MAX1361MEUB+ integrates a 2.048 V internal reference (the MAX1362 variant uses 4.096 V for higher dynamic range), a 4-input analog mux, and a 2-wire SMBus interface. The programmable trip window allows engineers to define independent upper and lower thresholds on each channel without host intervention, freeing the host CPU from polling. The ALERT output follows the SMBus Alert Response Address protocol, supporting multi-device shared interrupt lines. Typical applications include battery-cell voltage monitoring in portable medical and IoT devices, multi-rail power-supply supervision in servers and telecom hardware, front-end digitizing for system health monitors, and industrial process-control analog input modules. The combination of low Iq, internal reference, and 4 single-ended inputs reduces external BOM to a minimum. When laying out the PCB, keep analog traces short and shield the SMBus lines with a ground guard to maintain noise immunity on the reference. Decouple AVDD and DVDD with 0.1 μF ceramics placed within 3 mm of the respective pins.

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MAX1361MEUB+T

MAX1361MEUB+T - 4-Ch 10-Bit System Monitor ADC | Maxim

The Maxim Integrated MAX1361MEUB+T is a low-power, 10-bit, 4-channel analog-to-digital converter (ADC) system monitor with a programmable trip window and SMBus alert response, offered in a 10-pin TSSOP (uMAX) package. It delivers 4 analog input channels sampled by a 10-bit successive-approximation ADC at up to 150 ksps aggregate throughput and operates from a single 2.7V to 3.6V supply. The device includes a digitally programmable window comparator with an interrupt/INT output for autonomous system monitoring, plus an SMBus alert response interface for host notification. An ADC (Analog-to-Digital Converter) is a mixed-signal integrated circuit that converts continuous analog voltages into discrete digital codes, and a system monitor is a specialized ADC class that adds autonomous threshold detection so a host processor is interrupted only when a measured parameter moves outside a pre-programmed window. These ICs sit in the hierarchy: ADC -> data converter -> mixed-signal IC -> semiconductor, and they commonly supervise power rails, temperature sensors, and other analog health signals in space-constrained embedded designs. Key features of the MAX1361MEUB+T include 10-bit resolution, four single-ended analog input channels multiplexed into one ADC core, an integrated programmable window comparator that generates the ALERT/INT signal when any channel leaves its user-defined min/max band, and SMBus-compatible alert response that complies with the SMBALERT# protocol used by system management ICs. The interface is an I2C/SMBus-compatible serial port. The 10-pin TSSOP (also referred to as uMAX in Maxim's package family) keeps board area to about 3 mm by 3 mm and supports surface-mount reflow assembly. The device is specified over the industrial temperature range of -40C to +85C and supports an external reference voltage for the ADC core. Its low supply current makes it attractive for always-on supervisory functions in battery-powered systems where the host CPU is normally in sleep mode. The MAX1361 (internal reference setup) and MAX1362 (external reference setup) form the family; the EUB suffix indicates the 10-pin TSSOP industrial-grade package, and the +T suffix denotes tape-and-reel packaging. Typical applications include multi-rail voltage monitoring in servers, industrial control boards, and battery management systems (BMS); temperature-point monitoring with external sensors connected to the analog inputs; portable and handheld instruments requiring 4-channel data acquisition; and any embedded design that wants to offload analog threshold supervision from the main MCU. The autonomous window comparator means the MAX1361MEUB+T can wake the host only when an alarm condition occurs, reducing software overhead and interrupt traffic. When designing with the MAX1361MEUB+T, place 0.1 uF decoupling capacitors as close as possible to the VDD and GND pins, use a low-impedance analog ground, and keep analog input traces short and away from switching nodes. Configure the trip-window limits via the SMBus registers during initialization; the part then monitors autonomously and asserts ALERT/INT whenever any input leaves its programmed band. A pull-up resistor on the SMBus SDA/SCL lines and on the alert output is required. This page synthesizes distributor pricing, drop-in alternatives, and practical design guidance not found in the manufacturer datasheet.

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MAX1362MEUB+T

MAX1362MEUB+T - 10-Bit 4-Ch 150ksps ADC + Window Comparator | Maxim

The Maxim Integrated (Analog Devices) MAX1362MEUB+T is a 10-bit, 4-channel, low-power successive-approximation analog-to-digital converter (SAR ADC) with an integrated digitally programmable window comparator, SMBus Alert Response interface, and interrupt output, supplied in a 10-pin µMAX (U10-1) surface-mount package. It operates from a 4.5 V to 5.5 V analog supply, samples at up to 150 ksps aggregate, and provides a fixed 4.096 V internal reference that simplifies bipolar-style ±10 V measurement when paired with external input dividers. A SAR ADC is a type of analog-to-digital converter that performs a binary search across an internal capacitive DAC, capturing a single conversion in a deterministic number of clock cycles. System monitor ADCs such as the MAX1362 belong to the broader data-converter family and sit at the analog/digital boundary of mixed-signal designs, translating real-world sensor voltages into codes a microcontroller can act on. This category also includes delta-delta, pipelined, and dual-slope variants, but SAR dominates low-power multi-channel monitoring because no continuous integrator is required. Key features include four single-ended analog inputs scanned sequentially under I2C/SMBus control, an internal 4.096 V reference (versus 2.048 V on the pin-compatible MAX1361), 1 LSB INL/DNL, a programmable window comparator that flags out-of-band events without host intervention, and a hardware Alert pin conforming to the SMBus 2.0 Alert Response Address protocol. The MAX1362 also offers automatic channel scanning with interrupt on out-of-limit, allowing the host to sleep until a fault occurs. The MAX1362 architecture pairs a charge-redistribution DAC with on-chip input sample-and-hold. With a 10 ms per-channel wake-and-convert budget, the part draws roughly 436 µA in monitor mode, extending battery life on supervisory rails. The integrated reference saves board real-estate versus discrete ADR01/ADR02 designs, at the price of fixed scale. Common deployments are server-board voltage/temperature supervision, telecom power-shelf monitoring, industrial PLC analog front-ends, and battery-stack cell voltage tracking. The interrupt-driven window comparator makes the device particularly attractive where the host controller cannot continuously service conversions. When laying out the MAX1362MEUB+T, place the 0.1 µF VDD bypass within 5 mm of pin 10 and use a Kelvin-sense trace pair for each analog input to reject IR drop in the ground return; the internal reference does not require an external buffer but the analog ground must be a star connected back to the GND pin (pin 9). This page combines verified distributor pricing, drop-in cross-references drawn from the official Maxim datasheet family, and field-application design notes that go beyond the standard pin description table.

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MAX1363MEUB+

MAX1363MEUB+ - 12-Bit 4-Ch 133ksps ADC | Analog Devices

The Analog Devices (formerly Maxim Integrated) MAX1363MEUB+ is a 12-bit, 4-channel, low-power successive-approximation-register (SAR) analog-to-digital converter (ADC) with integrated programmable window comparator and SMBus Alert response interface, housed in a 10-pin uMAX (10-TFSOP/10-MSOP, 3.00 mm width) package. An ADC (analog-to-digital converter) is a data-acquisition mixed-signal IC that converts real-world analog voltages into discrete digital codes for processing by a microcontroller, DSP, or ASIC. SAR ADCs sample and digitize one input at a time using a successive-approximation register and a precision DAC loop, making them ideal for multiplexed multi-channel systems where low power and deterministic latency matter. The MAX1363 sits in the broader product hierarchy: ADC -> data converter -> data-acquisition IC -> mixed-signal IC -> semiconductor. By integrating a digital window comparator and the SMBus Alert response protocol, the MAX1363 functions as a 4-channel system monitor that can autonomously assert an interrupt when any input falls outside a user-programmed window. Key specifications include a maximum sampling rate of 133 ksps, 2.7 V to 3.6 V single-supply analog/digital operation, an internal 2.048 V reference (the MAX1364 variant uses 4.096 V), and supply current of 660 uA in internal-reference mode or 436 uA in external-reference mode at 133 ksps. The window comparator outputs interrupt via the SMBus Alert line, eliminating host polling and reducing firmware overhead. A 2-wire SMBus-compatible serial interface operates up to 400 kHz. Shutdown current drops to 0.5 uA with the reference disabled, making the part well suited to battery-powered multi-rail monitoring. The SAR architecture with internal auto-calibration yields excellent DC accuracy and high power-supply rejection (PSRR of plus or minus 0.01 LSB/V), enabling the part to ride on noisy system rails. The four analog inputs can be configured as 2 differential or 4 single-ended channels selected via the serial interface, and a dedicated analog-input current-limit protects against sensor faults and ESD transients. Typical applications include 4-rail system-voltage monitoring in servers and networking switches, battery-cell voltage monitoring in battery-management boards, environmental and HVAC sensor interface boards, and SMBus-based interrupt-generating monitoring of temperature and supply voltages in telecom and industrial equipment. The MAX1363's combination of low power, integrated comparator, and SMBus Alert makes it a workhorse for compute platforms that must supervise multiple rails without devoting firmware cycles to constant polling. When designing with the MAX1363, ensure the analog input signals remain within the supply rails and place 0.1 uF decoupling capacitors close to the supply pin. The internal 2.048 V reference allows direct scaling for 4-rail monitoring applications; for designs needing 5 V inputs use the external-reference mode (the MAX1364 variant uses 4.096 V reference for 5 V systems). This page consolidates distributor pricing tiers, drop-in alternative MPNs in the same uMAX-10 footprint, and practical design notes not always present in the manufacturer datasheet, helping procurement and design engineers compare, qualify, and source the MAX1363MEUB+ quickly.

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Subcategorías

Productos (39.000+)

MAX1321ECM+ - 14-Bit 4-Channel 357ksps Simultaneous-Sampling ADC | Maxim Integrated

MAX1323ECM+ - 14-Bit 526ksps Parallel ADC, 48-LQFP | Maxim Integrated

MAX1327ECM+ - 14-Bit 526ksps Parallel ADC | Analog Devices

MAX132CNG - ±18-Bit Serial ADC with Multi-Slope Integration | Maxim Integrated

MAX132CWG+ - 18-Bit, 100 SPS Multi-Slope ADC | Analog Devices

MAX132CWG+C10203 - 18-Bit+Sign Multi-Slope ADC | Analog Devices

MAX132ENG+ - 18-Bit 100SPS Serial ADC | Analog Devices

MAX132EWG+ - 18-Bit 100 SPS ADC | Maxim Integrated

MAX132EWG-T - 18-bit Serial ADC, Multi-Slope, 24-SOIC | Maxim

MAX133CMH+ - 3.75-Digit 20 CPS ADC | Maxim | Multimeter

MAX133CPL+ - 3.75-Digit 50ms DMM ADC | Analog Devices

MAX133EPL+ - 3-3/4 Digit DMM A/D Converter, 40-Pin PDIP | Maxim Integrated

MAX13487EESA+ 500kbps RS-485/RS-422 Transceiver

MAX134CMH+ - 3.75-Digit 50ms DMM ADC | Maxim Integrated

MAX134CPL+ - 3.75-Digit Dual-Slope ADC | Analog Devices

MAX134EPL+ - 3.75-Digit DMM ADC | Maxim Integrated | 40-DIP

MAX135CPI+ - 15-Bit Low-Power ADC | Analog Devices

MAX135CWI - 15-Bit Low-Power ADC with Parallel Interface

MAX135EPI+ - 15-Bit Low-Power Parallel ADC | Maxim Integrated

MAX135EWI - 15-Bit Multi-Slope Parallel ADC, 16 CPS | Maxim

MAX1361MEUB+ - 10-Bit 4-Ch 150ksps ADC/Supervisor | Maxim

MAX1361MEUB+T - 4-Ch 10-Bit System Monitor ADC | Maxim

MAX1362MEUB+T - 10-Bit 4-Ch 150ksps ADC + Window Comparator | Maxim

MAX1363MEUB+ - 12-Bit 4-Ch 133ksps ADC | Analog Devices