Circuitos Integrados

MAX1294ACEI+T

MAX1294ACEI+T - 12-Bit 420ksps 6-Ch ADC +2.5V Ref | Maxim

The Maxim Integrated MAX1294ACEI+T is a 12-bit, 420ksps, successive-approximation analog-to-digital converter (ADC) with a software-configurable 6-channel single-ended / 3-channel pseudo-differential input multiplexer, an internal +2.5V reference, and a parallel interface, packaged in a 28-pin SSOP (QSOP) with 0.154" (3.90 mm) body width. It operates from a single +5V analog supply, supports an analog input range of 0 to +5V (unipolar) or ±5V (pseudo-differential), and integrates an internal +2.5V reference so most applications need no external reference components. According to the Maxim datasheet, ±0.5 LSB integral nonlinearity (INL) is typical at 12-bit resolution. An SAR ADC is a successive-approximation register converter - a sampled analog input is compared bit-by-bit against an internal DAC, producing a digital code in N conversion cycles for N bits of resolution. The MAX1294ACEI+T combines this SAR core with a programmable input MUX, an internal reference, and a wide parallel interface, eliminating the need for an external analog front-end multiplexer or reference IC. It belongs to the Maxim MAX1294/MAX1295 family of pin-compatible multi-channel precision ADCs that share the same digital interface, simplifying design across channel counts. Key features include 420ksps maximum sampling rate, single +5V supply operation, software-configurable analog input multiplexer (6 SE / 3 PD for MAX1294; 2 SE / 1 PD for MAX1295), internal +2.5V reference (4.5 mA drive capability), low 2.5 mA operating supply current, and software-configurable unipolar/bipolar input ranges. The parallel interface allows direct connection to microprocessors, DSPs, or FPGAs without requiring a serial-port bit-bang routine. Typical applications include multichannel data-acquisition systems, industrial process control, patient monitoring, touch-screen digitizers, and any 5V system requiring simultaneous sampling of multiple analog sensors. The wide input range and integrated reference reduce BOM cost and PCB area. The internal +2.5V reference may also be used to drive external circuitry (e.g., excitation sources for ratiometric sensors). Design consideration: place 0.1µF bypass capacitors close to the AVDD and DVDD pins, keep analog and digital ground returns separated until they meet at a single star-point near the ADC, and tie unused analog inputs to AGND through a low-impedance path to minimize channel-to-channel crosstalk. The MAX1294ACEI+T is the tape-and-reel variant; the MAX1294ACEI+ is the tube (commercial) shipping option - same die, same footprint. This page synthesizes distributor pricing, drop-in same-brand replacements, and practical PCB/decoupling guidance not found in the manufacturer datasheet alone.

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MAX1294BCEI

MAX1294BCEI - 420ksps 12-Bit 6-Ch ADC | Maxim Integrated

The Maxim Integrated MAX1294BCEI is a 12-bit, 420 ksps analog-to-digital converter with a software-configurable 6-channel single-ended / 3-channel pseudo-differential analog input multiplexer, internal +2.5V reference, and parallel interface, housed in a 28-pin QSOP package. It operates from a single +5V analog supply, delivers ±0.5 LSB linearity, and supports both unipolar and bipolar input ranges through software configuration. The device includes an internal track-and-hold amplifier and a high-speed parallel microprocessor/DSP interface compatible with +5V logic. An ADC (analog-to-digital converter) of the successive-approximation-register (SAR) type operates by sampling the analog input and performing a binary search through an internal DAC to determine the digital output one bit at a time. SAR ADCs are valued for deterministic latency, low latency per conversion, and excellent dc accuracy, making them the workhorse for multiplexed data-acquisition systems, instrumentation, and process-control front ends where many channels must be read at moderate speeds. The MAX1294BCEI sits in the precision, low-channel-count data-acquisition IC category within the broader ADC and power-management semiconductor hierarchy. Key features include 420 ksps throughput, ±0.5 LSB INL/DNL linearity, a software-selectable analog input mux (6 single-ended / 3 pseudo-differential on MAX1294; 2 single-ended / 1 pseudo-differential on MAX1296), an internal +2.5V reference with REF_IN/REF_OUT pins, an analog input range of 0 to +5V unipolar or ±5V bipolar, and +5V single-supply operation. A hardware SHUTDOWN pin reduces supply current to < 10 µA between conversions for power-sensitive multiplexed scans. Architecturally, the device pairs a capacitive-DAC SAR core with an input track-and-hold and on-chip reference buffer. The internal +2.5V reference is trimmed at the factory and accessible at REF_OUT for external use, while REF_IN allows overdriving with an external reference when application noise or drift requirements demand it. Power-down sequencing and analog input discharge are handled automatically between conversion cycles to minimize channel-to-channel crosstalk. Typical applications include industrial process control, multichannel data-acquisition front ends, portable battery-powered instrumentation, and medical instrumentation signal conditioning. Designers choose this part when a small-channel-count, 5V-only, internal-reference SAR ADC with parallel read-out is needed. When designing with this part, place the 10 µF REF bypass and 0.1 µF AVDD decoupling caps within 5 mm of their respective pins and use a single-point analog/digital ground tie to limit multiplexer-crosstalk and reference noise. The parallel interface simplifies FPGA glue logic but consumes more board area than a serial-output ADC in channel-dense designs. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes for the MAX1294BCEI that are not aggregated on any single manufacturer or distributor page, so design engineers can shortlist parts faster and reduce bench-iteration cycles.

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MAX1294BCEI-T

MAX1294BCEI-T - 420ksps 12-Bit 6-Ch +5V ADC | Maxim Integrated

The Maxim Integrated MAX1294BCEI-T is a 420ksps, 12-bit, +5V analog-to-digital converter with a 6-channel single-ended or 3-channel pseudo-differential input multiplexer, an internal +2.5V reference, and a parallel interface, housed in a 28-pin SSOP (QSOP) package. According to the Maxim datasheet, the part delivers ±0.5 LSB linearity, single +5V operation, and software-configurable input muxing, making it well-suited for high-speed multichannel data acquisition. The "-T" suffix denotes Tape & Reel packaging for high-volume assembly lines. An ADC (analog-to-digital converter) is a semiconductor device that converts continuous analog signals into discrete digital codes for processing by microcontrollers, DSPs, or FPGAs. Successive-approximation-register (SAR) ADCs like the MAX1294BCEI-T sample-and-hold the input, then use an internal DAC and comparator to converge on the digital code one bit per clock cycle. SAR ADCs sit in the signal chain hierarchy between the analog sensor/front-end and the digital processor, and are favored for their deterministic latency, low power consumption, and excellent DC accuracy compared to delta-sigma or pipeline architectures. Key features of the MAX1294BCEI-T include 12-bit resolution with ±0.5 LSB integral nonlinearity, 420ksps throughput, software-selectable unipolar/bipolar input ranges, an internal +2.5V reference (with REFADJ pin for external trim), and a high-speed parallel interface. The internal reference eliminates the need for an external precision reference, reducing BOM cost and board space while maintaining the noise performance required for industrial and instrumentation applications. Architecturally, the MAX1294 uses a charge-redistribution SAR core with an input track-and-hold amplifier capable of handling fast multiplexed signals. Its low aperture delay and aperture jitter make it suitable for simultaneous-sampling-like accuracy across channels when paired with a fast external mux. The device operates from a single +5V analog supply with a separate VLOGIC supply (3V to 5V) for the parallel bus. Typical applications include industrial process control, multichannel data-acquisition systems, portable instrumentation, motor control feedback loops, and medical patient monitoring. When designing with this part, place a 0.1µF ceramic bypass capacitor close to the VDD pin and a 10µF bulk capacitor on the +5V rail to minimize digital noise coupling into the analog input stages.

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MAX1295ACEI+T

MAX1295ACEI+T - 12-Bit 6Ch 265ksps +3V ADC | Maxim Integrated

The Maxim Integrated (Analog Devices) MAX1295ACEI+T is a 12-bit, 265 ksps, +3V single-supply successive-approximation analog-to-digital converter (ADC) with a 6-channel single-ended / 3-channel pseudo-differential input multiplexer, an internal +2.5V reference, and a parallel interface. Housed in a 28-pin QSOP (SSOP) package with ±0.5 LSB linearity, the device targets precision mixed-signal data-acquisition front ends. An ADC (Analog-to-Digital Converter) is a data-converter integrated circuit that samples continuous analog voltages and converts them into discrete digital codes for use by microcontrollers, DSPs, and FPGAs. SAR (successive-approximation register) ADCs such as the MAX1295ACEI+T sit in the data-converter hierarchy between flash converters (fast, expensive, low resolution) and sigma-delta converters (very high resolution, slow). They offer an optimal balance of speed, resolution, and power for multi-channel precision sensing. The MAX1295ACEI+T belongs to the broader category of precision ADCs > data converters > mixed-signal ICs > semiconductors. Key features of the MAX1295ACEI+T include 12-bit resolution with ±0.5 LSB integral nonlinearity (INL), 265 ksps maximum sampling rate, software-configurable 6-channel single-ended or 3-channel pseudo-differential input MUX, internal low-drift +2.5V reference, single +3V analog supply operation, low power consumption, and a high-speed parallel digital interface compatible with microcontrollers and DSPs. The internal reference eliminates an external reference IC, simplifying BOM and board area. The MAX1295ACEI+T uses a capacitive charge-distribution SAR architecture with an input track-and-hold. Its +2.5V internal reference achieves low drift across temperature, while the parallel byte/word interface minimises host-side timing complexity. An analog input multiplexer supporting 6 single-ended or 3 pseudo-differential channels is programmed through the digital interface, allowing a single ADC to monitor multiple sensors. Typical uses include portable and battery-powered data-acquisition systems, industrial process-control front ends, multi-sensor monitoring in instrumentation, medical patient-monitoring channels, and any multi-channel precision-sensing application requiring a parallel-interface ADC. The wide input multiplexer count (6/3 channels) makes it particularly attractive where board real estate is at a premium. When designing with the MAX1295ACEI+T, ensure the analog supply is well decoupled and the analog input traces are kept short and guarded from digital switching noise. The internal +2.5V reference requires adequate bypass capacitance close to the REF pin. Verify that the chosen microcontroller/DSP can read the parallel bus at the required conversion rate. This page synthesises distributor stock and pricing data from DigiKey, Mouser, and Octopart, structured drop-in alternatives from the same product family, and practical design notes not found on the manufacturer datasheet cover page.

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MAX1295BCEI

MAX1295BCEI - 265ksps 12-Bit 6-Ch +3V ADC | Maxim Integrated

The Maxim Integrated (Analog Devices) MAX1295BCEI is a 265 ksps, 12-bit, 6-channel successive-approximation analog-to-digital converter (ADC) operating from a single +3V supply, offered in a 28-pin SSOP (QSOP) surface-mount package with parallel interface and an internal +2.5V reference. It delivers ±0.5 LSB integral linearity, software-configurable analog input multiplexer (6 single-ended / 3 pseudo-differential channels), and an integrated +2.5V reference, all in a compact 28-pin package. An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that samples continuous analog voltages and outputs discrete binary codes, bridging real-world sensors (temperature, pressure, strain, current) to digital microcontrollers, DSPs, or FPGAs. Successive-approximation (SAR) ADCs such as the MAX1295 use an internal DAC and comparator to perform a binary search each conversion cycle, providing a strong trade-off between speed, accuracy, and low power. They sit in the broader taxonomy: ADC -> data converter -> mixed-signal IC -> semiconductor. When paired with an internal 2.5V reference, a 12-bit SAR ADC can resolve 2.5V/4096 = 610 µV LSB steps directly with no external reference IC. Key features of the MAX1295BCEI include 12-bit resolution with ±0.5 LSB DNL/INL, software-selectable input channel configuration, hardware- and software-controlled power-down modes (as low as 1 µA typical for battery-friendly designs), an internal 2.5V reference (or external reference override), and a wide digital +3V single-supply rail. The parallel interface connects directly to microcontrollers or ASICs and supports 100 ns minimum data-access time, simplifying timing closure in system-on-chip designs. The MAX1295 family uses a charge-redistribution SAR architecture with an input track-and-hold, supporting single-ended or pseudo-differential conversions. Automatic power-down between conversions plus a fast wake-up time yield a typical supply current of ~1.7 mA at 265 ksps, dropping to ~1 µA in shutdown, which is critical for battery-powered data-acquisition systems. Typical applications of the MAX1295BCEI include multi-channel data acquisition in industrial control loops, portable/battery-powered instrumentation, system monitoring boards, motor-control feedback paths, and process-control sensor interfaces. Designers select this part when 12-bit resolution is enough, multiple sensor channels are required, and parallel (rather than serial) output is desired for fast host-side reads. One design consideration: although the MAX1295 supports both internal and external references, an external reference improves gain accuracy and temperature drift in precision measurements. Use low-impedance source driving and place a 0.1 µF + 10 µF decoupling pair near the supply pin to keep digital switching noise out of the analog front end. This page synthesizes distributor pricing, drop-in same-package alternatives (MAX1294BCEI/MAX1295BCEI+/MAX1295BCEI+T/MAX1295AEEI/MAX1295BEEI), 28-pin pinout data and practical design notes not found in the standalone manufacturer datasheet.

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MAX1296ACEG

MAX1296ACEG - 12-Bit 420ksps 2-Ch ADC +2.5V Ref | Maxim

The Maxim Integrated MAX1296ACEG is a 12-bit, 420ksps, +5V analog-to-digital converter with 2 analog input channels (single-ended) or 6 channels (single-ended, software-configurable), an internal +2.5V reference, and a parallel microprocessor interface, offered in a 24-pin QSOP package. The C-grade speed variant delivers 420k conversions per second over a 0 to +5V unipolar input range (also configurable for +/-5V bipolar true-differential inputs via the MAX1294 family) with track/hold, internal +2.5V bandgap reference, and low power dissipation of typically 10mW at 420ksps. An ADC is a mixed-signal data converter that samples continuous-time analog signals and produces discrete-time digital codes for downstream processors. The MAX1296 sits in the successive-approximation-register (SAR) ADC category (lower-latency, deterministic, no pipeline delay) which falls within the broader data-converter (ADC/DAC) hierarchy of mixed-signal integrated circuits used in instrumentation, industrial control, and embedded processing. Key features include a maximum sampling rate of 420 ksps (C-grade, AIN-to-acquisition mode), 12-bit resolution with no missing codes, integral nonlinearity (INL) and differential nonlinearity (DNL) errors specified in LSBs in the Maxim datasheet, an internal trimmed +2.5V reference with 50ppm/C typical drift, hardware- or software-controlled channel selection, an active-low end-of-conversion INT output, and a logic-independent +5V analog supply with +3V/+5V digital interface compatibility. The SAR architecture uses an internal binary-weighted capacitor DAC and comparator to perform one conversion in 12 successive approximation cycles, allowing the device to digitize at a fixed throughput independent of input frequency. The on-chip reference eliminates an external 2.5V shunt component and simplifies PCB layout for cost-sensitive multi-channel data-acquisition boards. Typical applications include process control and industrial automation (PLC analog front ends), data-acquisition boards in instrumentation and medical monitoring, optical-network power monitoring (SONET/SDH receive signal strength indication), and digital multimeter / precision sensor signal conditioning. The 24-pin QSOP footprint also suits space-constrained embedded designs. When designing with this device, ensure the analog supply is decoupled with a 0.1uF ceramic plus 10uF tantalum or ceramic bypass within 5mm of AVDD, and that the digital interface signals are referenced to DVDD isolated from noisy digital returns. Channel switching speed and software-mode conversion latency should be modeled against any downstream FIFO or DMA transfer budget. This page synthesizes distributor pricing, parametric drop-in alternatives from the same Maxim ADC family, and practical design notes not consolidated in the manufacturer datasheet alone.

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MAX1296AEEG

MAX1296AEEG - 420ksps 12-Bit 2-Ch ADC +2.5V Ref | Maxim Integrated

The Maxim Integrated (Analog Devices) MAX1296AEEG is a 12-bit, 420 ksps successive-approximation analog-to-digital converter with a parallel interface, an internal +2.5 V reference, and a software-configurable analog input multiplexer, housed in a 24-pin QSOP package. It operates from a single +5 V supply, accepts up to 2 single-ended or 1 pseudo-differential analog input channel, and delivers ±0.5 LSB linearity. The combination of low power consumption, a small footprint, and a parallel output word makes the part a practical choice for embedded data-acquisition front ends. What is a successive-approximation register (SAR) ADC? An SAR ADC is a type of analog-to-digital converter that uses a binary search algorithm against an internal DAC to digitize an input voltage one bit per clock cycle. SAR ADCs occupy the middle of the converter taxonomy between flash (fastest, lowest resolution) and sigma-delta (slowest, highest resolution). The MAX1296AEEG's 420 ksps throughput is typical of mid-resolution SAR ADCs, while its 12-bit resolution positions it above 10-bit mid-tier devices and below 14-/16-bit precision parts. Key features include 420 ksps sampling rate, 12-bit resolution with ±0.5 LSB DNL/INL, internal +2.5 V reference (typically ±1.5% initial accuracy), single +5 V analog supply operation, low power dissipation of approximately 8.3 mA at full speed, and hardware/ software power-down modes that drop quiescent current below 1 µA. The MAX1296AEEG also includes an active-low INT output that tri-states when CS goes high, allowing direct connection to shared microcontroller buses without external glue logic. The architecture combines an input track-and-hold, a charge-redistribution DAC, and a precision comparator with on-chip calibration registers. Power-down is initiated either through hardware (active-low SHDN) or by software command; the internal reference is preserved in software power-down but lost in hardware shutdown. The QSOP-24 footprint occupies roughly 60% of the board area of a standard SO-24, making the part suitable for compact instrument designs where PCB real estate is limited. Typical applications include data-acquisition systems, pen-digitizers and tablet digitizing surfaces, panel meters, portable industrial instrumentation, and medical monitoring front ends. The wide analog input range (0 to VREF or pseudo-differential ±REF) is well-suited to transducer conditioning. When designing with this part, place the 0.1 µF bypass capacitor on AVDN as close to the pin as possible and keep digital traces away from the analog inputs to avoid coupling. The MAX1295/MAX1297 are pin-compatible +3 V variants for systems with lower supply rails.

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MAX1297AEEG

MAX1297AEEG - 12-Bit 265ksps +3V 2-Ch ADC | Maxim Integrated

The Maxim Integrated MAX1297AEEG (now part of Analog Devices) is a 12-bit, 265ksps, successive-approximation analog-to-digital converter (ADC) with a +3V analog supply and an internal +2.5V reference. It offers a 2-channel single-ended / 1-channel pseudo-differential input multiplexer and a parallel digital interface, and is housed in a 24-pin QSOP package. An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that samples a continuous analog voltage and converts it into a discrete digital code for microcontrollers, DSPs, or FPGAs. SAR (successive-approximation register) ADCs such as the MAX1297 sit in the data-converter hierarchy below sigma-delta and pipelined ADCs and above flash ADCs, and are widely used where mid-speed (ksps to Msps) and low-power single-supply operation are required. They belong to the broader precision analog / signal-chain block that interfaces real-world sensors to digital processors. SAR ADCs deliver one conversion per N clock cycles and trade off speed for resolution without the latency of sigma-delta modulators. Key specifications of the MAX1297AEEG include 12-bit resolution with ±0.5 LSB linearity, a +3V single-supply analog operation, an internal +2.5V reference (eliminating an external reference component), and software-configurable input multiplexing. The MAX1297 also provides a hardware-power-down mode and a high-speed parallel interface that simplifies connection to microcontrollers and FPGAs. The MAX1295 is the 6-channel/3-channel version of this family. Architecture: the device uses a charge-distribution DAC and a precision comparator with auto-calibration to achieve ±0.5 LSB INL/DNL, with the internal bandgap reference trimmed to ±2.5V ±0.02% (4 mV). The integrated input mux and track-and-hold minimize external component count, while the parallel bus eliminates SPI/I2C protocol overhead in real-time control loops. Typical applications include data acquisition systems, portable instrumentation, pen tablets and touch-screen controllers, and industrial process controls. The wide single-supply range and internal reference also make it well-suited to battery-powered portable measurement devices. Design tip: provide a low-impedance 0.1 uF ceramic bypass capacitor directly on AVDN and DVDD, and keep the analog input traces short and guarded. Power sequencing (AVDD before DVDD) is recommended when interfacing with mixed-voltage digital controllers. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers evaluate sourcing options and PCB-reuse trade-offs across the MAX1295/MAX1296/MAX1297 family and pin-compatible ADI cross-references.

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MAX1304ECM/V+

MAX1304ECM/V+ - 12-Bit 8-Ch Simultaneous-Sampling ADC | ADI

The Analog Devices MAX1304ECM/V+ is a 12-bit, 8-channel, simultaneous-sampling analog-to-digital converter (ADC) offering throughput rates up to 1.075 Msps per channel in a 48-pin LQFP (7x7 mm) package. The /V+ suffix denotes the automotive-grade operating temperature range, qualified for -40°C to +85°C environments. The device integrates eight independent track-and-hold amplifiers that allow true simultaneous sampling across all input channels, critical for multi-axis motor control and power monitoring systems. What is a simultaneous-sampling ADC? A simultaneous-sampling (or parallel-sampling) ADC is a class of data converter that captures multiple analog input channels at the same instant using individual track-and-hold stages per channel, then digitizes them sequentially. Compared to multiplexed ADCs that switch between channels, simultaneous-sampling ADCs preserve the phase relationships between signals - making them essential for polyphase power measurement, vibration analysis, and motor-control position feedback. They sit within the broader taxonomy of SAR (successive-approximation register) ADCs -> data converters -> mixed-signal ICs -> semiconductors. Key features of the MAX1304ECM/V+ include bipolar analog input ranges of ±10V and ±5V as well as unipolar 0 to +5V (with reduced ranges when using lower supply voltages), an internal +2.5V reference (with option for an external +2V to +3V reference), a 20 MHz bidirectional parallel digital interface, and dedicated per-channel digital inputs that activate each conversion channel individually. The converter is built on a low-power CMOS process and provides a software-/hardware-controlled power-down mode that drops idle current to microamp levels. According to the manufacturer datasheet, total analog supply current is 55 mA with all channels active and digital supply current is approximately 1.3 mA. Typical applications include three-phase motor control, multiphase power monitoring, power-factor correction, power-grid synchronization (PLL-style phase-angle measurement), SIN/COS position encoder readout, and vibration / waveform analysis. Each use case relies on the part's ability to sample 8 channels without skew between them - the kind of phase fidelity multiplexed ADCs cannot deliver. When designing with the MAX1304ECM/V+, place the analog and digital supply decoupling capacitors as close as possible to their respective supply pins to keep the high-speed parallel bus from coupling switching noise back into the analog front end. For systems where only 4 or 2 channels are needed, the pin-compatible MAX1305-MAX1307 and MAX1309-MAX1315 family members can be substituted without reworking the PCB footprint.

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MAX1306ECM+T

MAX1306ECM+T - 12-Bit 1.075Msps 2-Ch ADC | Maxim Integrated

The Maxim Integrated MAX1306ECM+T is a 12-bit, 1.075 Msps, simultaneous-sampling analog-to-digital converter (ADC) with two independent input channels, available in a 48-pin LQFP (7x7 mm) package. Designed for precision multi-channel data acquisition, it integrates dual track-and-hold amplifiers, a 3 V internal reference, and configurable analog input ranges of ±10 V, ±5 V, and 0 to +5 V, allowing direct interface with industrial-level bipolar signals. An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that converts real-world analog voltages into discrete digital codes for processing by microcontrollers, DSPs, or FPGAs. The MAX1306 belongs to the simultaneous-sampling SAR ADC category — successive approximation register (SAR) ADCs that can sample multiple channels at exactly the same instant, which is critical for polyphase motor control, vibration analysis, and power-line monitoring where phase relationships between channels must be preserved. In the broader product hierarchy, the MAX1306 sits under ADC -> Data Converter -> Mixed-Signal IC -> Semiconductor. Key performance features include 12-bit resolution, 1.075 Msps per channel throughput, true bipolar input ranges of ±10 V and ±5 V (plus unipolar 0 to +5 V), a low-impedance input architecture that tolerates ±25 V overvoltage without damage, and internal or external reference flexibility. The device operates from a single +5 V analog supply and a +3 V to +5 V digital supply, drawing modest quiescent current suitable for portable instrumentation. The architectural implementation combines simultaneous sampling with input protection and signal conditioning on-chip, eliminating the need for external op-amp buffers or attenuators in most applications. The integrated voltage reference and track-and-hold circuitry reduce external component count, while the parallel digital interface simplifies connection to microcontrollers and DSPs. Typical applications include three-phase power-line monitoring, industrial process control, vibration analysis, motor control, and multi-axis data acquisition systems. Designers select the MAX1306 when simultaneous-sampling of multiple analog inputs is mandatory and the dynamic range of the system lies within the 12-bit resolution ceiling. When designing with this part, the analog and digital supplies must be decoupled separately and the AGND/DGND plane strategy must follow the datasheet layout guidelines. The device supports both internal and external reference modes, so reference stability directly determines absolute accuracy. This page synthesizes distributor pricing, parametric drop-in alternatives, and design notes for the MAX1306ECM+T that complement — but do not replace — the Maxim datasheet.

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MAX13085EESA+

MAX13085EESA+ - 500kbps Fail-Safe RS-485/RS-422 | Analog Devices

The Analog Devices MAX13085EESA+ is a 5.0 V RS-485/RS-422 transceiver with one driver, one receiver, 500 kbps data rate, and ±15 kV ESD protection in an 8-pin SOIC package. It supports half-duplex communications and includes fail-safe receiver circuitry plus hot-swap capability. The verified material also reports a 1/8-unit-load receiver input impedance and up to 256 transceivers on the bus. Its low 1.2 mA unloaded or driver-disabled supply current suits power-conscious field-bus equipment. An RS-485/RS-422 transceiver is an interface IC that converts logic-level UART or controller signals into balanced differential bus signals, then converts received differential signals back into CMOS-compatible logic. RS-485 supports multipoint, half-duplex buses, while RS-422 commonly emphasizes point-to-point or driver-receiver links. The MAX13085E family belongs to the transceiver hierarchy: interface transceiver, wired communication interface, and semiconductor. The MAX13085E provides one driver and one receiver, 500 kbps operation, ±15 kV ESD protection, and fail-safe behavior that forces a logic-high receiver output when inputs are open, shorted, or all bus transmitters are disabled. Its hot-swap capability helps maintain predictable operation during connector mating. The 1/8-unit receiver loading lowers input impedance so as many as 256 compatible transceivers can share one bus. Its half-duplex architecture requires control of driver enable and receiver enable according to the selected bus topology. Supply filtering, protected cable routing, and correct termination are essential because a compliant transceiver alone does not guarantee an immune field connection. The stated 5 V operating range also requires systems to regulate the device from compatible rail voltages. Typical uses include industrial sensor buses, building automation, factory equipment, telecom racks, and remote monitoring links. It is particularly useful when a compact bus node needs one bidirectional half-duplex channel, robust electrostatic protection, and deterministic behavior during disabled-driver or hot-plug conditions. Designers should confirm the manufacturer pinout and enable polarity before routing the PCB, and should not infer RS-485 network performance from the 500 kbps device rate alone. Cabling, topology, termination, grounding, and transceiver matching determine practical range and reliability. This page combines verified manufacturer data, distributor availability information, and application-oriented engineering guidance. It also separates documented drop-in alternatives from unverified substitutions, helping engineers compare procurement and design options without treating merely similar interface ICs as pin-compatible replacements.

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MAX1309ECM/V+

MAX1309ECM/V+ - 12-Bit 4-Ch 1.075Msps SAR ADC | Maxim Integrated

The Maxim Integrated MAX1309ECM/V+ is a 12-bit, 4-channel, simultaneous-sampling successive-approximation-register (SAR) analog-to-digital converter (ADC) with up to 1.075 Msps per-channel throughput, packaged in a 48-pin LQFP (7x7 mm). It accepts software-configurable input ranges of ±10V, ±5V, and 0 to +5V using on-chip ±18V-over-range-protected true-differential inputs that tolerate up to ±16.5V without damage. The /V+ suffix indicates the part is the automotive/V-grade variant qualified to higher reliability standards. An ADC (analog-to-digital converter) is a data-acquisition component that converts real-world analog signals into discrete digital codes for processing by a microcontroller, DSP, or FPGA. SAR ADCs specifically use a binary-search capacitor array and a comparator to perform one bit at a time per clock cycle, trading off speed for excellent DC accuracy (no pipeline latency, ideal for multiplexing and event-triggered sampling). The MAX1309 family fits in the data-acquisition signal chain alongside sensors, instrumentation amplifiers, and multiplexers. Key features include four independent track-and-hold (T/H) amplifiers that sample all channels simultaneously for true phase-coherent multi-axis measurements, an internal 4.096V reference, and a high-speed parallel interface compatible with 3V digital logic. The device operates from a single 3.0V analog supply plus a separate 3.0V digital supply for noise isolation. Per-channel throughput up to 1.075 Msps is achievable using an external clock up to 25 MHz. The architecture combines a charge-distribution SAR core with dedicated T/H front-ends and per-channel input-protection clamps. The integrated reference and T/H eliminate the need for external sample-and-hold components, simplifying multi-axis vibration, power-line monitoring, and three-phase motor-control designs. The 48-LQFP footprint enables hand-solderable prototyping and standard reflow assembly. Typical applications include industrial process control, multi-phase power metering, vibration and acoustic analysis, three-phase motor control, and automotive data acquisition. The simultaneous-sampling channels make the part especially well suited to applications where phase relationships between input signals must be preserved. When designing with the MAX1309ECM/V+, observe the layout guideline of separating analog and digital ground returns and placing 10µF plus 0.1µF bypass capacitors as close as possible to each supply pin. Verify that the input common-mode voltage stays within the selected range; out-of-range inputs are clamped but continuous overdrive can cause self-heating. This page synthesizes distributor pricing, drop-in alternatives, and design notes not found in the manufacturer datasheet alone.

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MAX130CMH

MAX130CMH - 3.5-Digit Dual-Slope LCD ADC | Maxim Integrated

The Maxim Integrated MAX130CMH is a 3.5-digit dual-slope analog-to-digital converter with an integrated bandgap reference and direct LCD output, housed in a 44-pin square QFP package. Its primary characteristics include 3.5-digit resolution, a single analog input function, parallel word access, seven-segment LCD drive, and commercial-temperature grade construction. An ADC converts an analog input voltage into a digital value for measurement, display, or system control. The MAX130CMH belongs to the dual-slope integrating ADC category, a converter type that uses an integrating and reference interval to measure input voltage. Within the broader semiconductor hierarchy, this device is a data-converter IC, an interface IC, and a signal-conditioning component for precision panel-meter and industrial measurement systems. The integrated bandgap reference provides the conversion system with a stable internal reference rather than requiring a separate reference circuit. The seven-segment LCD configuration is intended for direct display of signed or unsigned measurement results, while the 3.5-digit format provides three integer digits and one fractional digit for a display range of 0000 through 1999. These characteristics suit instruments that prioritize readable panel-meter output rather than a high-speed data-conversion interface. The MAX130CMH uses a dual-slope conversion architecture, which is well matched to low-rate instrumentation where accurate integration, straightforward scaling, and direct LCD presentation are more important than rapid sampling. Its parallel word-access output provides a digital result to a system controller, while the LCD driver section allows the measured quantity to be presented locally. The 44-pin square gull-wing QFP construction provides a conventional surface-mount footprint with accessible perimeter leads. Typical uses include digital panel meters, process monitoring instruments, laboratory meters, temperature measurement panels, weighing-system displays, and industrial control interfaces. The integrated reference and LCD driver reduce the number of separate components needed for a standalone display instrument, while dual-slope conversion supports applications that do not require waveform acquisition or high-frequency sampling. For new layouts, preserve the analog and digital grounding arrangement specified by the manufacturer and provide the required reference and input filtering. Check the complete pin description and reference schematic in the manufacturer datasheet before assigning external display and measurement circuitry. Confirm acquisition timing and display update requirements against the specified conversion rate for the target measurement range. This page consolidates the available specifications, verified source links, package details, and application guidance into an engineering-oriented overview. It also distinguishes documented MAX130CMH variants and provides selection criteria for engineers evaluating the 44-QFP dual-slope LCD ADC family.

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MAX130CQH+D

MAX130CQH+D - 3.5 Digit ADC w/ Bandgap Reference | Maxim

The Maxim Integrated (Analog Devices) MAX130CQH+D is a 3.5-digit (BCD or sign-magnitude) integrating analog-to-digital converter (ADC) with an on-chip bandgap reference, packaged in a 44-pin LCC (Leadless Ceramic Chip Carrier) LCCC surface-mount enclosure. It accepts a differential input voltage range of ±200 mV (or 0.2 V to 2 V single-ended depending on configuration) and converts it to a digital output with ±2000-count resolution (plus over-range), making it the historical benchmark IC behind classic 3.5-digit digital panel meters (DPMs). An integrating ADC (also called a dual-slope ADC) is a class of analog-to-digital converter that converts an unknown input voltage into a digital count by integrating the input signal over a fixed time window, then measuring the de-integration time against a known reference. Integrating ADCs belong to the broader ADC family, which itself sits within the data converter and signal-conditioning hierarchy of mixed-signal ICs. The MAX130CQH+D integrates the reference, comparator, clock and digit-decoding logic onto a single die, eliminating the external precision components typically associated with dual-slope designs. Key features include an internal bandgap voltage reference for absolute accuracy, built-in charge-pump negative supply generation (allowing single +5V operation while measuring bipolar ±2V inputs), BCD output with over-range and under-range flags, and TTL/CMOS-compatible logic interfaces. The 44-pin LCC surface-mount package suits high-reliability industrial instrumentation, while the die operating temperature window of -40 °C to +85 °C supports commercial-to-industrial environments. Conversion integration automatically rejects 50 Hz/60 Hz line noise (a hallmark of dual-slope topology), giving a typical ±20,000-count stable reading in electrically noisy factory floors. Typical applications include digital panel meters and voltmeters, weigh scales and load-cell readouts, pH and process-control instrumentation, automotive sensor readouts, and any precision low-frequency measurement demands >16-bit effective resolution with strong normal-mode and common-mode noise rejection. The on-chip reference simplifies BOM and the surface-mount LCC package supports pick-and-place product-assembly lines. When designing with this part, place a 0.1 µF decoupling capacitor close to the +5 V supply pin and follow the datasheet reference layout for the integration capacitors. Note that the part is in mature production; if the LCC-44 footprint is fixed, the +D tape-and-reel suffix confirms factory packaging and full traceability. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone - helping engineers decide between the MAX130CQH+D, its commercial/industrial siblings, and current-generation alternatives.

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MAX130CQH+TD

MAX130CQH+TD - 3½ Digit ADC w/Bandgap Ref | Maxim Integrated

The Maxim Integrated (Analog Devices) MAX130CQH+TD is a 3½-digit analog-to-digital converter (ADC) with integrated bandgap reference, packaged in a 44-pin LCC (Leadless Chip Carrier, J-bend) format. The device uses a dual-slope conversion architecture that provides inherent noise rejection of 50 Hz/60 Hz line-frequency interference, a feature particularly valuable in industrial panel meters and digital multimeter designs. The integrated bandgap reference eliminates the need for an external precision voltage reference, simplifying the BOM and improving long-term temperature stability. An ADC (Analog-to-Digital Converter) is a data conversion integrated circuit that transforms a continuous analog input voltage into a discrete digital code for processing by a microcontroller or display driver. In the signal-chain hierarchy, the ADC sits between the analog front end (sensor, amplifier, filter) and the digital domain (MCU, display, communication IC). Dual-slope ADCs excel at integrating slowly varying DC signals while rejecting periodic noise, making them the dominant architecture for low-cost, high-accuracy digital panel meters used in industrial control equipment. Key features of the MAX130CQH+TD include a maximum analog input range of ±2 V (with 200 mV to 2 V per the input range specified), an industrial operating temperature grade from -40°C to +85°C, and an LCC-44 plastic surface-mount package conforming to MO-047AC. The +TD suffix indicates tape-and-reel packaging for high-volume assembly, and the C-grade marking confirms industrial temperature screening. The 44-terminal LCC provides robust mechanical mounting for vibration-prone environments and remains compatible with reflow soldering profiles typical of lead-free SMT lines. The MAX130CQH+TD utilizes a charge-balancing dual-slope integrator combined with an auto-zeroing cycle, allowing it to null amplifier offset and reference drift before each conversion. According to the Maxim datasheet for the MAX130 family, the device provides three decimal digit BCD outputs plus a polarity/sign bit plus an over-range flag, intended for direct drive of LCD or LED displays via external display drivers. The architecture achieves ±2000-count resolution with ±1-count accuracy, which equals ±0.05 % of full-scale - more than sufficient for most process-control readouts and bench meters. Typical applications include 3½-digit digital panel meters, handheld DMM front ends, process-control readouts, weigh-scale indicators, and industrial sensor signal conditioning boards. The 50 Hz/60 Hz rejection makes it ideal for any installation near variable-frequency drives or switching power supplies, where periodic noise couples into thermocouple, RTD, or transducer inputs. When designing with the MAX130CQH+TD, pay attention to PCB layout near the integrator capacitor pins; routing digital display driver signals away from these traces prevents beat-frequency interference. The lead-free LCC-44 package requires careful solder paste stencil design because the J-bend terminations under the package edge are not visually inspectable after reflow, so AOI or X-ray inspection is recommended for production runs. This page synthesizes distributor pricing, drop-in and pin-compatible alternatives, design notes, and FAQ answers not co-located in the Maxim datasheet, giving procurement engineers a faster path to substitute, qualify, or purchase this long-lifecycle industrial ADC.

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MAX130EPL+

MAX130EPL+ - 16-Bit Dual-Slope ADC | Maxim Integrated

Maxim Integrated MAX130EPL+ is a 16-bit dual-slope analog-to-digital converter with one analog input, parallel word access, CMOS construction, and a 40-pin PDIP package. The verified listing identifies a 3.5-digit A/D converter with an integrated bandgap reference and industrial-temperature through-hole packaging. Its dual-slope architecture converts an input voltage into a time-based digital result, while the parallel interface allows the measured word to be read by compatible digital circuitry. A dual-slope ADC is a integrating analog-to-digital converter that integrates the unknown input for a fixed interval and compares it with a reference over another interval. This method is well suited to slowly changing or low-frequency measurements because it averages periodic disturbances and can provide good noise performance when the integration timing and digital filtering are selected appropriately. The MAX130EPL+ belongs to the broader ADC and data-conversion semiconductor hierarchy. The verified sources identify the device as a 16-bit converter with a dual-slope conversion technique, one channel, parallel word access, CMOS technology, and a PDIP-40 package. They also describe the MAX130 family as 3.5-digit A/D converters with a bandgap reference. The listed package is a 40-pin plastic DIP, making the part suitable for through-hole industrial and instrumentation designs rather than compact surface-mount assemblies. The integrated bandgap reference provides the conversion system with a stable internal reference function. Exact reference voltage, input range, conversion time, accuracy, operating temperature, supply voltage, and current consumption were not supplied in the verified excerpts, so those parameters remain unspecified here. Engineers should consult the manufacturer datasheet before setting analog gain, selecting reference components, or calculating timing margins. Typical uses include digital panel meters, laboratory measurement equipment, process monitoring, industrial instrumentation, sensor interfaces, and low-frequency data acquisition. The 40-pin PDIP footprint favors prototypes, repairable equipment, and industrial control boards where through-hole assembly and generous component spacing are useful. The parallel output can simplify connection to older microprocessors, counters, display drivers, or custom digital control logic. For a new design, verify the complete electrical limits, reference requirements, input conditioning, acquisition timing, and pin mapping against the official datasheet. Do not infer a replacement from the 40-pin package alone: the replacement must match the pinout, conversion method, reference arrangement, input range, interface timing, and measurement accuracy requirements.

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MAX1311ECM+T

MAX1311ECM+T - 12-Bit 1075ksps Parallel ADC, ±10V Input | Maxim Integrated

The Analog Devices (formerly Maxim Integrated) MAX1311ECM+T is a 12-bit, 1075 ksps analog-to-digital converter with parallel-output data bus in a 48-pin LQFP (7x7 mm) package. The single ADC channel accepts ±10V, ±5V, and 0 to +5V true bipolar analog input ranges without external signal conditioning, simplifying data-acquisition front-end design. The integrated input protection and high-impedance input structure simplify signal chain design in industrial process control and instrumentation equipment. Housed at the 48-LQFP (7x7) footprint with industrial temperature grade, the MAX1311ECM+T targets multi-channel or single-channel high-precision data acquisition where software-configurable input ranges are required. What is an ADC? An analog-to-digital converter (ADC) is a data converter integrated circuit that samples continuous analog voltage signals and converts them into discrete digital codes for processing by microcontrollers, DSPs, or FPGAs. ADCs are categorized by resolution (8-, 10-, 12-, 14-, 16-bit and beyond), sampling rate (ksps to Msps), and architecture (SAR, sigma-delta, pipeline). Successive-approximation-register (SAR) ADCs like the MAX1311ECM+T deliver a balance of speed, accuracy, and low latency that suits multiplexed data-acquisition systems, motor control feedback loops, and instrumentation. Key features include 12-bit resolution, 1075 ksps sampling rate, software-configurable input ranges of ±10V, ±5V, and 0 to +5V, internal 2.5V reference, and a parallel digital interface for direct connection to microprocessors. The ±10V true bipolar input range is achieved through an on-chip input attenuator and level shifter that allows direct connection to industrial ±10V or ±5V signals without external op-amp scaling, reducing BOM count and PCB area. The integrated analog input protection (ESD diodes) improves reliability in harsh industrial environments with cable-borne transients. The MAX1311ECM+T uses a capacitive-charge-distribution SAR architecture with laser-trimmed scaling capacitors to deliver the wide ±10V input range. The internal 2.5V reference and precision resistor-divider network provide calibration-stable conversion accuracy, while the parallel digital interface outputs conversion data on a single read cycle for low-latency system response. Single-supply +5V operation reduces power supply complexity in industrial backplanes. Typical applications include industrial process control, data acquisition cards (DAQs), medical instrumentation, vibration monitoring, and pen-loop control. The integrated ±10V input range and high-impedance performance make it well-suited for PLC analog input modules and test-and-measurement front-ends. When designing with this ADC, ensure that the analog input pin ESD protection is not violated by external cable transients. Decouple the analog and digital supplies with 10uF and 0.1uF ceramic capacitors placed close to the AVCC and DVDD pins. Provide sufficient acquisition time by respecting the manufacturer-specified tACQ minimum in the timing register code. This page synthesizes distributor pricing from 5+ sources, drop-in cross-reference alternatives including pin-compatible Maxim Integrated and third-party replacements, and practical PCB design guidance for reliable operation that is not assembled in the manufacturer datasheet.

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MAX1319ECM+

MAX1319ECM+ - 14-Bit 526ksps Parallel ADC | Maxim Integrated

The Maxim Integrated MAX1319ECM+ is a 14-bit, 526 ksps, single-channel analog-to-digital converter (ADC) with a parallel digital interface, housed in a 48-pin LQFP (7x7 mm) package. It belongs to the pin-compatible MAX1316-MAX1327 family of 12/14-bit SAR ADCs, sharing the same LQFP-48 footprint and pinout with the 12-bit MAX1316/MAX1317, the dual-channel MAX1318, and the higher-throughput 16-bit MAX1327 variants. This device falls within the SAR (Successive Approximation Register) ADC category. A SAR ADC is a precision data converter that uses a binary-search algorithm and an internal sample-and-hold front-end to digitize an analog signal in a fixed number of clock cycles. SAR converters offer deterministic latency, low power, and excellent DC accuracy, and they sit one tier below pipeline ADCs in speed but above delta-sigma converters in latency determinism - making them the workhorse for control-loop, motor-drive, and power-monitoring applications. Key features of the MAX1319ECM+ include 14-bit resolution, a 526 ksps sampling rate, ±1 LSB INL (typical), and a 0 to +5V analog input range from a single +5V analog supply. The parallel digital interface directly connects to microcontrollers and DSPs with 8-bit or 16-bit data buses, eliminating the timing budget overhead of a serial interface. The MAX1319ECM+ includes an internal 4.096V reference and supports both internal and external reference modes. The ADC uses a segmented architecture with input protection clamps, an on-chip clock, and a track-and-hold front end. The architecture is optimized for AC and DC performance across the industrial -40C to +85C operating range, with 70 dB SINAD and 84 dB SFDR typical dynamic performance at the maximum sampling rate. Typical applications include multiphase motor control, power-factor monitoring and correction, power-grid synchronization, vibration and waveform analysis, and industrial process instrumentation. The deterministic conversion latency also suits digital protective relays and UPS controllers. When designing with this part, populate the supply pins (AVDD, DVDD) with local 0.1uF and 10uF ceramics placed within 5 mm of the pins. Keep analog and digital ground returns separated and joined at a single star point under the exposed paddle. This page synthesizes distributor pricing, drop-in alternatives drawn from the same pin-compatible MAX1316-MAX1327 family, and practical design notes that complement - but do not replace - the manufacturer datasheet.

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MAX1319ECM+T

MAX1319ECM+T - 14-Bit 526ksps Parallel ADC | Maxim Integrated

The Analog Devices (formerly Maxim Integrated) MAX1319ECM+T is a 14-bit, 526 ksps, single-channel analog-to-digital converter with a parallel interface, housed in a 48-pin LQFP (7 mm x 7 mm) package with industrial temperature grade. It accepts a unipolar analog input range and operates from a single +5 V analog supply with a separate digital logic supply; throughput up to 526 kilosamples per second supports high-speed data acquisition in industrial-control loops. The part is identified by base part MAX1319, package code ECM (48-LQFP), and the +T suffix denotes tape-and-reel packaging. An SAR (successive-approximation-register) ADC is a widely used architecture for medium-resolution, medium-speed conversion. It uses an internal binary-weighted capacitor DAC and a comparator to perform one bit decision per clock cycle, achieving 14-bit resolution in 14 conversion steps. Compared with flash ADCs (fast but high-power and limited resolution) and sigma-delta ADCs (slow but very high resolution), SAR ADCs sit in the middle - the architecture most often chosen for industrial process control, motor-control current sensing, and power-rail monitoring, where a deterministic conversion time and a parallel digital bus are required. Key features of the MAX1319ECM+T include a maximum throughput of 526 ksps, an aperture of approximately 3 microseconds through the integrated track-and-hold circuit, ±1 LSB INL and ±1 LSB DNL, and an internal or external reference. The device includes an integrated track/hold, a synchronous serial or parallel interface, and an end-of-conversion output for easy handshaking with microprocessors, DSPs, or FPGAs. The 48-pin LQFP package exposes ample ground and supply pins to support low-noise PCB layout, and the ECM variant is the standard 7 mm x 7 mm body for the MAX1319 family. The MAX1319 series spans same-family alternatives offered by Maxim: the MAX1316 (12-bit), MAX1317/MAX1318 (14-bit with different throughput or channel count), MAX1319 (this part, 14-bit 526 ksps single-channel), MAX1320 (dual-channel), and the MAX1321-MAX1327 higher-channel-count variants. All share the same 48-pin LQFP footprint, allowing pin-compatible upgrades within a board layout. The evaluation board ships with a MAX1320ECM installed but can be substituted with any other ECM-packaged MAX1316-MAX1327 family member. Typical applications for the MAX1319ECM+T include multiphase motor control, power-factor monitoring and correction, power-grid synchronization, vibration and waveform analysis, and instrumentation digitizers. The interface compatibility with standard parallel microprocessor buses makes the device attractive in designs where designers want a parallel ADC front-end without the cost of FPGA firmware for a serial interface. Industrial temperature grade (-40°C to +85°C) covers the operating envelope of factory-floor PLCs and motor drives. When designing with the MAX1319ECM+T, ensure that the analog and digital grounds are tied to a single point at the package to avoid potential code noise, use a 0.1 μF decoupling capacitor at every supply pin, and add a 10 μF bulk capacitor to the analog supply rail. The internal reference can be bypassed to ground through the REF pin; if a more stable reference is required, an external ADR43x-series source can drive REF instead. This page synthesizes distributor pricing from DigiKey/Mouser/Octopart, drop-in and pin-compatible same-family alternatives from the MAX1316-MAX1327 series, and practical layout/design notes that go beyond the manufacturer datasheet's typical application circuit to help engineers speed up their selection decision.

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MAX131ACQH+

MAX131ACQH+ - 3.5 Digit ADC w/ Bandgap Reference | Maxim Integrated

The Maxim Integrated MAX131ACQH+ is a 1-channel single dual-slope analog-to-digital converter (ADC) with on-chip bandgap reference, designed for 3.5-digit LCD display readout, housed in a 44-pin PLCC (QCCJ) package. It integrates the analog front-end, integrator, comparator, clock, bandgap reference, and LCD driver in a single IC, enabling compact digital panel meter designs. The suffix '+' indicates lead-free (Pb-free) construction; '+D' suffix denotes dry-pack handling. An ADC (analog-to-digital converter) with integrated LCD driver is a mixed-signal IC that converts an analog input voltage to a numeric BCD/7-segment output suitable for direct multiplex to an LCD. The dual-slope architecture provides excellent rejection of 50 Hz/60 Hz line-frequency noise (a critical parameter for panel-meter accuracy), and the integrated bandgap reference eliminates the need for an external precision reference, simplifying the BOM. Key features include a single +5 V supply operation, input voltage range of 0.2 V to 2.0 V (differential), ±2000-count conversion range (3.5 digits), on-chip bandgap reference with low temperature drift, on-chip LCD backplane/segment drivers, and an integrated oscillator. The 44-pin PLCC (QCCJ) package with J-bend terminal form provides a low-profile surface-mount option for industrial and commercial panel-meter designs. The MAX131ACQH+ uses a dual-slope (integrating) conversion architecture, which inherently averages out 50 Hz/60 Hz power-line interference over the integration period. The bandgap reference is laser-trimmed for low drift across the commercial 0 C to +70 C temperature range, allowing direct-reading accuracy without external calibration adjustments. Typical applications include digital panel meters (DPMs), handheld DVMs, weighing scales, process monitor readouts, and battery-powered LCD instrumentation. The integrated LCD driver directly multiplexes to a 3.5-digit 7-segment display, eliminating external display-driver ICs. When designing with this device, the input signal must be conditioned to within the 0.2 V to 2.0 V differential input range using an external input attenuator or op-amp front-end. Decoupling capacitors (typically 0.1 uF) must be placed close to the supply and reference pins. The integrating architecture requires CINT and CAZ external capacitors; their selection dictates conversion speed vs noise rejection trade-off. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, enabling faster part selection and PCB reuse for legacy panel-meter designs.

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MAX131ACQH+TD

MAX131ACQH+TD - 3.5 Digit ADC Dual-Slope, PLCC-44 | Maxim Integrated

The MAX131ACQH+TD from Maxim Integrated (now part of Analog Devices) is a 3.5-digit analog-to-digital converter (ADC) using a dual-slope integration architecture, housed in a 44-pin PLCC (QCCJ) surface-mount package. The device integrates a bandgap reference, differential input, and LCD-compatible drivers, all on a single CMOS die. An ADC (analog-to-digital converter) is a semiconductor device that converts continuous analog signals into discrete digital codes; the dual-slope architecture is one of the oldest and most robust integrating-converter topologies, prized for excellent normal-mode and common-mode noise rejection because the integrator averages the input over a fixed integration window. Dual-slope ADCs sit within the data-converter family, which itself is a sub-category of data acquisition ICs under mixed-signal and power-management-adjacent signal-chain semiconductors. Key features of the MAX131ACQH+TD include a single differential input channel, an on-chip bandgap voltage reference for measurement precision, and external reference support for system-level calibration. The integration architecture provides inherent 50 Hz / 60 Hz line-noise rejection. The serial data interface simplifies microcontroller read-back, and the device operates from a single supply rail. From a technical depth perspective, the dual-slope conversion cycle consists of a defined integration phase (run-up) followed by a de-integration phase (run-down) against the reference; the count accumulated during run-down is proportional to the input voltage. This inherent averaging makes the architecture highly immune to periodic noise, especially at power-line frequencies, but limits throughput to a few conversions per second. Typical applications include digital panel meters, handheld multimeters, industrial process monitors, weighing scales, and any precision low-frequency measurement front-end where line-noise rejection and absolute accuracy outweigh conversion speed. When designing with this part, observe the integration timing capacitor and reference bypass capacitor recommendations in the datasheet, as they directly affect conversion linearity and noise performance. The PLCC-44 footprint simplifies PCB integration but requires a socket or careful reflow profiling.

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MAX131CMH

MAX131CMH - 3.5-Digit ADC with Bandgap Reference | Maxim

The Maxim Integrated MAX131CMH is a 3.5-digit analog-to-digital converter with an integrated bandgap reference, supplied in a 44-pin MQFP package. It is designed for panel-meter, digital-panel-display, laboratory-instrument, and industrial measurement applications that require conversion of a differential analog input into a digital measurement result. The verified manufacturer and distributor listings identify the device as a 3 1/2-digit ADC with bandgap reference, and the manufacturer describes the MAX130 and MAX131 families as using a bandgap reference to generate an analog common voltage with guaranteed long-term stability. A 3.5-digit ADC is a special-purpose data converter optimized for measurement displays rather than high-resolution waveform acquisition. It can represent a decimal reading with approximately three and a half significant digits, which is useful for measuring slowly changing quantities such as temperature, pressure, voltage, current, or process variables. The integrated bandgap reference supplies a stable reference for the conversion system, reducing the need for an external precision reference in suitable measurement designs. Key product characteristics include the 3.5-digit conversion format, integrated bandgap reference, 44-terminal MQFP construction, and commercial temperature grade as shown in the verified distributor data. The MAX131 family is also available in MAX131A versions, which the manufacturer states have a maximum temperature coefficient of 50 ppm/°C, compared with 100 ppm/°C for the standard MAX130 and MAX131 families. These variants provide a useful selection distinction when reference stability is more important than basic display-oriented measurement resolution. The MAX131 is generally used where a controller, display, or system input needs a stable, low-cost measurement value. The common-mode input arrangement allows the converter to be used with suitable external signal-conditioning networks for sensors and resistive dividers. The reference architecture is important because measurement accuracy depends not only on the ADC itself but also on the reference voltage, input conditioning, grounding, and the time required for conversion. Designers should pay particular attention to input range, differential input polarity, conversion timing, reference decoupling, and the layout of sensitive analog signals. The 44-pin MQFP package requires adequate PCB area and careful routing, especially when the measured signal is close to the converter's resolution limit. The manufacturer product page and datasheet should be consulted for the complete electrical characteristics, timing diagrams, reference limits, and recommended application circuit. This page combines the verified manufacturer description, distributor package information, source links, application guidance, and design notes for engineers evaluating the MAX131CMH. Pricing and availability should be checked against current distributor records because component inventory and lead time can change after the verified data date.

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MAX131CQH+TD

MAX131CQH+TD - 3.5-Digit Dual-Slope ADC w/ Bandgap Ref | Maxim Integrated

The Maxim Integrated (now Analog Devices) MAX131CQH+TD is a 3.5-digit dual-slope analog-to-digital converter with an integrated bandgap reference, housed in a 44-pin PLCC (16.59 x 16.59 mm, LCCC package code QCCJ) surface-mount package. It accepts single-ended analog input voltages of 0.2 V to 2 V full-scale, drives LCD displays directly, and operates from -40 C to +85 C across the industrial temperature range. A dual-slope ADC (also called an integrating ADC) is a precision converter architecture that measures an analog input by integrating it over a fixed time window, then de-integrating against a known reference. The integration/de-integration cycle inherently averages out broadband noise, providing excellent normal-mode noise immunity (typically 60 Hz or 50 Hz rejection when clocked at the line frequency) without complex analog filtering. Dual-slope ADCs sit within the broader data converter / data acquisition IC family, beneath successive-approximation (SAR) and sigma-delta architectures in conversion speed but above them in noise rejection and simplicity for low-frequency panel-meter and DMM applications. Key features of the MAX131CQH+TD include the on-chip bandgap voltage reference, automatic zero and full-scale calibration, an LCD backplane driver capable of driving up to 3.5 seven-segment digits plus sign and annunciators, differential inputs through an external front-end, and a serial output interface for system-level data logging. The integrated reference eliminates the external zener or bandgap component traditionally required by 3.5-digit panel-meter designs. The +TD suffix denotes Tape and Reel packaging for high-volume SMT assembly lines. Technically, the device uses CMOS analog front-end circuitry and a charge-balancing integrator with on-chip autozero capacitors. The integrating conversion technique yields >60 dB normal-mode rejection of 50 Hz/60 Hz line noise, which is essential for industrial panel meters and digital multimeters operating near switching power supplies. The 3.5-digit resolution corresponds to a 2000-count dynamic range, sufficient for handheld DMMs, weigh scales, and process instrumentation readouts. Typical applications include digital panel meters, handheld digital multimeters, industrial process readouts, weigh scales and load-cell readouts, battery-powered portable instrumentation, and point-of-sale terminal displays. The wide industrial temperature range makes the part suitable for factory-floor equipment where temperature swings would otherwise force extra thermal compensation. When designing with the MAX131CQH+TD, place 0.1 uF bypass capacitors close to the supply pins and route the analog input traces as short, guarded differential pairs to preserve common-mode rejection. The on-chip reference requires a stable analog supply; powering from a noisy switching rail without adequate LC filtering will degrade the displayed reading. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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MAX131EPL+

MAX131EPL+ - 3.5 Digit ADC with Display Drivers | Maxim Integrated

The Maxim Integrated (now Analog Devices) MAX131EPL+ is a 3.5-digit analog-to-digital converter (ADC) with integrated display drivers and a 40-pin PDIP through-hole package. It uses a classic dual-slope conversion architecture that provides inherent 50 Hz / 60 Hz line-frequency rejection, making it well suited to digital panel meters (DPMs) and process-control readouts where the supply is fed from a rectified mains source. The integrated BCD/7-segment decoder and high-current display drivers eliminate the need for an external display controller, simplifying BOM cost. What is a dual-slope ADC? A dual-slope converter integrates the unknown input voltage over a fixed time, then de-integrates against a known reference voltage. Because the average is computed over a full line-cycle window, periodic mains interference integrates to zero, producing true RMS-like noise rejection. Within the broader taxonomy: dual-slope ADC -> ADC -> data converter -> data acquisition IC -> mixed-signal semiconductor. Key features include differential inputs, true-polarity indication, an internal reference, and high-current bipolar display driver pins that can directly sink or source typical 7-segment LED displays. The device requires external integration capacitor and resistor selection to set conversion time and full-scale range; the manufacturer's datasheet section on component selection contains the explicit design equations. Operating temperature spans the industrial -40C to +85C range. The MAX131 is fabricated on a BiCMOS process that combines bipolar drive transistors for the display outputs with CMOS logic on the same die. The 40-pin PDIP package maximizes creepage and is the standard form-factor for legacy DPM designs; surface-mount equivalent footprints exist in the same family but with different pin ordering, so footprint sharing requires a redesign. The device typically draws low quiescent current from a single +5V or +/-5V supply. Typical applications include handheld digital multimeters (DMMs), automotive battery testers, weighing scales with LED displays, industrial process controllers, and laboratory panel meters. The dual-slope architecture is favoured wherever the 50/60 Hz rejection is decisive and the conversion-rate requirement is moderate (typically a few conversions per second), as opposed to high-speed SAR or sigma-delta ADC parts. Designers should pay close attention to integrating capacitor leakage (use polypropylene or NPO ceramic for the integration cap), clock source selection (sets conversion rate and noise rejection bandwidth), and reference decoupling at the REF pin. Operating the device outside its common-mode input range yields incorrect polarity indication. The PDIP footprint enables hand-soldered prototyping and field replacement. This page synthesises distributor pricing, drop-in package-compatible alternatives, and practical design notes not found in the bare datasheet listing.

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Subcategorias

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MAX130CQH+D - 3.5 Digit ADC w/ Bandgap Reference | Maxim

MAX130CQH+TD - 3½ Digit ADC w/Bandgap Ref | Maxim Integrated

MAX130EPL+ - 16-Bit Dual-Slope ADC | Maxim Integrated

MAX1311ECM+T - 12-Bit 1075ksps Parallel ADC, ±10V Input | Maxim Integrated

MAX1319ECM+ - 14-Bit 526ksps Parallel ADC | Maxim Integrated

MAX1319ECM+T - 14-Bit 526ksps Parallel ADC | Maxim Integrated

MAX131ACQH+ - 3.5 Digit ADC w/ Bandgap Reference | Maxim Integrated

MAX131ACQH+TD - 3.5 Digit ADC Dual-Slope, PLCC-44 | Maxim Integrated

MAX131CMH - 3.5-Digit ADC with Bandgap Reference | Maxim

MAX131CQH+TD - 3.5-Digit Dual-Slope ADC w/ Bandgap Ref | Maxim Integrated

MAX131EPL+ - 3.5 Digit ADC with Display Drivers | Maxim Integrated