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MAX152EPP

MAX152EPP - 8-Bit 400ksps 3V ADC with 1µA Power-Down | Maxim

The Maxim Integrated MAX152EPP is a high-speed, 8-bit, microprocessor-compatible analog-to-digital converter (ADC) that uses a half-flash (semiflash) architecture to achieve a 1.8µs conversion time and 400 ksamples/s throughput. The device operates from a single +2.7V to +3.6V supply (or dual ±3V) and accepts unipolar or bipolar analog inputs, packaged in a 20-pin PDIP (EPP suffix). An ADC (analog-to-digital converter) is a semiconductor device that samples a continuous analog voltage and quantizes it into a discrete digital code. Half-flash ADCs use two flash sub-ADACs and a single sample-and-hold stage to deliver sub-2µs conversions at roughly half the die area and power of a true flash converter. In the power-management and signal-chain hierarchy, an ADC sits between the analog front end and a digital host (µP, DSP, FPGA), forming the data-acquisition core of instrumentation, data loggers, and process-control systems. Key specifications of the MAX152EPP include 400 ksps throughput, 1.8µs conversion time, 900ns power-up wake-up, an internal track-and-hold, 1.5 mA operating current, and 1µA power-down current that makes it ideal for battery-powered and portable applications. The on-chip PWD pin reduces quiescent draw to 1µA between conversions. Input bandwidth is 300 kHz full-power, and the device supports both unipolar (0 to VREF or 0 to VDD) and bipolar (-VDD to +VDD) input ranges using a single-ended or pseudo-differential input stage. The half-flash core uses 15 comparators (split between MSB and LSB sub-conversion cycles) and on-chip error correction that removes missing-code risk. The parallel digital interface is µP-friendly with CS, RD, and WR controls plus a high-impedance output state that allows bus sharing with other peripherals. The MAX152EPP is offered in commercial (0°C to +70°C) and extended (-40°C to +85°C) temperature grades. Typical applications include portable battery-powered instrumentation, pen digitizers, remote data-acquisition modules, process-control loops with 3.3V backplanes, and low-power embedded µP systems where the host samples the ADC only on demand and shuts it down between conversions to extend battery life. A key design tip is to issue a PWD-low-to-high wake-up at least 900ns before initiating a conversion; otherwise the first sample is degraded by incomplete settling of the internal reference ladder. This page synthesizes distributor pricing, drop-in alternatives and practical design notes for the MAX152EPP that go beyond the manufacturer datasheet.

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MAX152EWP

MAX152EWP - 3V 8-Bit 400ksps ADC | Analog Devices | SOIC-20

The Analog Devices / Maxim Integrated MAX152EWP is a single-channel, 8-bit resolution analog-to-digital converter (ADC) with 400 ksps throughput, packaged in a 20-pin SOIC (0.295 inch / 7.50 mm width). It operates from a single +2.7V to +3.6V supply with 1.8 us conversion time, 900 ns power-up wake, internal track-and-hold, 300 kHz full-power bandwidth, and a low-power shutdown mode that drops supply current to 1 uA when idle. An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that samples a continuous analog input voltage and produces a discrete binary code proportional to that voltage. ADCs sit in the broader signal-chain taxonomy of data acquisition ICs -> converters -> ADC/DAC -> interface ICs -> integrated circuits. They serve as the bridge between analog sensors (temperature, pressure, position, audio) and digital processors, with successive-approximation-register (SAR) ADCs like the MAX152 optimized for medium-speed, low-power applications where low latency and predictable acquisition are more important than raw resolution. Key features include 1.5 mA operating supply current (dropping to 1 uA in power-down), internal 2.5V reference, parallel data interface, single-ended analog input with track/hold, and -40C to +85C industrial operating temperature. The 20-pin SOIC footprint supports both surface-mount and through-hole-compatible land patterns, simplifying prototyping and assembly for low-volume and legacy designs. The MAX152EWP uses a successive-approximation-register (SAR) architecture with an internal capacitive DAC, providing deterministic latency (one conversion = one clock cycle at the chosen throughput) and excellent DC accuracy. Internal calibration of the reference and input sampling network allows the device to deliver rated performance without external precision components, reducing BOM cost and PCB area. Typical applications include portable battery-powered data loggers, handheld multimeters and test equipment, industrial process sensors, medical monitoring subsystems, and low-bandwidth audio or voice-band front ends. Designers value its 1 uA shutdown current for battery life and its parallel output for direct connection to microcontrollers and DSPs. A key design consideration is that the MAX152EWP (no '+' suffix) is RoHS non-compliant; for new designs where RoHS compliance is mandatory, prefer the MAX152EWP+ or MAX152EWP+T variants which share identical electrical performance and pinout but use lead-free finishes. The MAX152EWP datasheet does not include output stage ESD ratings beyond HBM 2 kV per JEDEC JS-001, so additional external protection may be required for harsh industrial environments. This page synthesizes distributor pricing from DigiKey/Mouser/Octopart, drop-in same-brand alternatives in the same SOIC-20 footprint, and practical SAR-ADC design notes not found in the manufacturer datasheet alone.

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MAX153CAP+

MAX153CAP+ - 1Msps 8-Bit ADC | Maxim Integrated

The Maxim Integrated MAX153CAP+ is a microprocessor-compatible, 8-bit flash analog-to-digital converter operating at 1Msps in a 20-pin SSOP package. It uses a half-flash conversion architecture with a 660ns conversion time, accepts unipolar or bipolar analog inputs, and supports single +5V or dual ±5V supply configurations. A dedicated POWERDN control reduces operating current to 1µA during shutdown. An ADC is a data-conversion IC that converts an analog voltage into a digital code for processing, storage, or control. The MAX153 belongs to the flash converter family, where an internal flash array performs successive approximation without requiring a continuous sample-and-hold conversion cycle like some tracking architectures. Its microprocessor-compatible interface makes it suitable for systems where a parallel data bus and control signals connect the converter directly to a controller. The MAX153CAP+ combines 8-bit resolution with a 1Msps sampling rate. Its 660ns conversion time supports high-speed acquisition while the 8-bit output provides 256 digital codes for each input range. The device accepts either unipolar or bipolar signals, allowing one converter design to serve both single-ended sensor outputs and centered bipolar signals. Single +5V operation or dual ±5V operation provides flexibility in industrial and instrumentation power architectures. The MAX153 family uses a half-flash conversion technique. This architecture combines flash conversion characteristics with microprocessor-compatible control, making the converter practical for data acquisition, control, and measurement systems where the host processor determines when conversion starts and reads the resulting digital word. External reference support lets the system establish the conversion scale according to its sensor, excitation, and measurement requirements rather than relying only on a fixed internal reference. Typical applications include industrial process monitoring, digital voltmeter and panel-meter front ends, industrial control interfaces, battery-powered instrumentation, factory automation, and embedded measurement systems. For signals above the converter input range, suitable scaling, filtering, protection, and front-end amplification must be added without compromising the 1Msps operating rate. A critical design consideration is preserving signal integrity around the analog input and digital output bus. Place input and bypass capacitors close to their associated pins, route the parallel digital interface away from sensitive analog traces, and use suitable grounding to minimize conversion noise. Confirm supply sequencing, reference stability, input bandwidth, and logic-level compatibility before releasing the PCB layout. This page combines the MAX153CAP+ technical profile, drop-in family alternatives, application guidance, and design considerations for faster component selection and board-level planning. Use the manufacturer datasheet as the controlling reference for pin assignments, timing, electrical limits, and package details.

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MAX153CPP+

MAX153CPP+ - 8-Bit 1MSPS ADC with 1µA Power-Down | Analog Devices

The Analog Devices MAX153CPP+ is an 8-bit, single-input, microprocessor-compatible analog-to-digital converter that performs up to 1 million samples per second, with a 660 ns conversion time, while operating from a single +5 V or dual ±5 V supply in a 20-pin PDIP package. An ADC is a data-converter IC that translates an analog voltage into a digital code for processing by a microcontroller, microprocessor, comparator, or control system. The MAX153 belongs to the parallel-output ADC family, a functional subset of data converters and analog-to-digital converters. Its parallel interface transfers each 8-bit conversion result directly through dedicated digital output pins, making it suitable for designs that require deterministic sampling without a serial communication protocol. Key features include 1 MSPS throughput, 8-bit resolution, a 660 ns half-flash conversion time, and a typical 1 µA power-down current. The converter accepts unipolar or bipolar analog inputs and supports both single +5 V and dual ±5 V operating arrangements. These characteristics are useful where compact, low-power, processor-compatible data acquisition is more important than high resolution. The MAX153 uses a half-flash conversion architecture rather than a conventional successive-approximation or flash-only architecture. This approach supports the stated 660 ns conversion time and 1 MSPS sampling rate while presenting an 8-bit parallel result to the host processor. An active-low POWERDN input allows the converter to enter its low-power state when measurements are not required, reducing system power consumption during inactive intervals. Typical uses include industrial process control, factory automation, test and measurement equipment, embedded instrumentation, and legacy data-acquisition systems. The 20-pin PDIP format also favors through-hole prototyping, repair, and legacy motherboard layouts where a modern fine-pitch package would require a different footprint and routing strategy. The primary design consideration is interface timing: the host must read the 8-bit parallel output within the converter's permitted output timing window, while the analog input and supply references must satisfy the MAX153 operating requirements. Power-down should be used during idle periods, but power-state transitions must be coordinated with acquisition sequencing to avoid sampling an unsettled analog input. This product page combines the verified Analog Devices MAX153 data, distributor pricing information, source links, and application-oriented guidance to provide engineering context beyond the basic distributor catalog description. It also distinguishes verified production information from package-level and cross-reference details that require further engineering confirmation.

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MAX153CPP+CGP

MAX153CPP+CGP - 1Msps 8-Bit µP-Compatible ADC | Analog Devices

The Analog Devices MAX153CPP+CGP is a high-speed, microprocessor (µP)-compatible, 8-bit analog-to-digital converter (ADC) using a half-flash architecture to deliver a 660 ns conversion time and digitize at 1 megasample per second (Msps), housed in a 20-pin PDIP through-hole package. Key headline parameters include 8-bit resolution, 1 Msps sampling rate, and 1 µA typical power-down current, with single +5V or dual ±5V analog supply operation. An ADC (analog-to-digital converter) is a data converter IC that translates continuous analog signals into discrete digital codes for processing by microprocessors, microcontrollers, or DSPs. The MAX153 belongs to the successive-approximation/half-flash ADC family, which sits in the broader hierarchy of data converters alongside SAR (successive-approximation register), flash, sigma-delta, and pipeline architectures. Half-flash converters use two flash stages to halve the comparator count versus true flash, achieving sub-microsecond conversion at moderate die size—ideal for µP-interfaced data acquisition. Key features include a track/hold amplifier on-chip, unipolar or bipolar input ranges, a dedicated RD/WR strobe that maps directly onto 8086-style µP bus cycles, and a logic-level POWERDN pin that drops supply current to 1 µA for battery-powered designs. The half-flash core achieves ±1 LSB linearity (typical) and ±0.5 LSB INL, while the wide-aperture track/hold supports full-scale step inputs without dynamic distortion. Internal reference options and a simple two-wire read/write handshake simplify host integration. The MAX153 is typically deployed in data-acquisition front-ends, process-control PLC analog input modules, instrumentation and panel meters, portable battery-powered sensors, and digital oscilloscope or spectrum-analyzer auxiliary channels. The 1 Msps rate, low power-down current, and µP bus interface make it well suited to embedded industrial designs where host CPU cycles must be minimized. Designers should provide solid analog and digital ground separation, place the 2.2 µF reference bypass capacitor close to REF, and ensure the read strobe timing meets the 660 ns conversion budget. For multi-channel systems, an external MUX can be placed in front of the single analog input with the ADC's conversion latency absorbed by the host between samples. This page synthesizes distributor pricing from DigiKey, Mouser, Octopart, and Jotrin, drop-in same-package alternatives, and practical design notes that are not aggregated on the manufacturer datasheet alone.

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MAX153CWP+

MAX153CWP+ - 8-Bit 1MSPS ADC with Power-Down | Analog Devices

The Analog Devices MAX153CWP+ is an 8-bit, single-input analog-to-digital converter operating at 1 MSPS, with a conversion time of 660 ns, in a 20-pin SOIC package. It accepts unipolar or bipolar analog inputs and operates from a single +5 V supply or dual ±5 V supplies. An ADC is an analog-to-digital converter that transforms a continuously varying voltage into a numeric value for processing by a microprocessor, controller, or digital system. The MAX153 belongs to the flash-converter family of data-converter ICs and uses a half-flash architecture to balance rapid conversion speed with compact implementation. Its microprocessor-compatible interface makes it suitable for embedded measurement and control systems requiring a straightforward parallel data path. Key features include a maximum conversion rate of 1 MSPS, 8-bit resolution, single-ended input capability, and a dedicated POWERDN control pin. The power-down function reduces supply current to 1 uA, allowing the converter to remain connected to a sensitive analog circuit without continuously consuming active-mode power. The device also supports both single +5 V and dual ±5 V supply arrangements, giving designers flexibility in industrial signal-chain designs. Internally, the MAX153 uses a half-flash conversion technique rather than a conventional full-flash or successive-approximation architecture. A flash converter determines a digital result through parallel comparison stages, while the half-flash method reduces the number of conversion stages. This architecture supports the stated 660 ns conversion time and 1 MSPS throughput. The external reference arrangement gives the system designer control over the voltage range and accuracy used by the conversion process. Typical applications include industrial process monitoring, digital voltmeters, sensor-interface systems, laboratory instrumentation, and embedded control panels. The converter is especially appropriate when an 8-bit measurement is sufficient, the acquisition must complete in approximately one microsecond, and the host processor can accept a parallel microprocessor-style interface. It is also useful in portable equipment that benefits from the 1 uA power-down state. When laying out the circuit, treat the analog input, reference, and power connections as sensitive signal paths. Keep the input trace short, place bypass capacitors close to the supply pins, and avoid routing digital output traces directly beneath the analog input. Confirm the selected reference voltage and supply arrangement against the input range before applying analog signals. This page organizes the key MAX153CWP+ specifications, practical application guidance, lifecycle information, and design considerations into an engineering-focused reference. It also separates confirmed technical facts from details that require confirmation before schematic release or component sourcing.

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MAX153EAP

MAX153EAP - 1Msps 8-Bit ADC, 1µA Power-Down, 20-SSOP | Maxim

The Maxim Integrated MAX153EAP (now part of Analog Devices Inc.) is a 1Msps, microprocessor-compatible, 8-bit analog-to-digital converter with 1µA power-down current, housed in a 20-pin SSOP package. It features a single-ended input channel, half-flash (flash) architecture, parallel data output interface, and an external reference, making it well suited to high-speed, low-power data acquisition in portable and industrial designs. An ADC (Analog-to-Digital Converter) is a mixed-signal integrated circuit that converts a continuous-time analog voltage into a discrete-time digital code. Half-flash (also called subranging) ADCs use two parallel flash stages of fewer comparators to achieve higher conversion rates than successive-approximation ADCs of similar cost, while maintaining modest die area and power consumption. The MAX153EAP belongs to the SAR/half-flash ADC product category within the broader data converter IC hierarchy, which sits under signal conditioning and data acquisition in the mixed-signal semiconductor tree. Key specifications include 1Msps minimum sampling rate, 8-bit resolution, single 5V analog supply (per the original Maxim datasheet), and an ultra-low 1µA power-down current that enables battery-powered applications to wake, sample a single waveform, and return to sleep between conversions. The half-flash converter delivers 8-bit throughput in a single acquisition with no missing codes, while an external reference allows the user to optimize full-scale range and noise performance for the transducer in use. Typical applications include portable instrumentation, pen-digitizers and touch controllers, remote data loggers, and embedded process control front-ends where a fast 8-bit ADC with a 1µA sleep current extends battery life. The MAX153EAP is widely used as a drop-in upgrade for systems that previously depended on AD7574, AD670, or first-generation AD converter designs requiring higher throughput. When designing with this device, place the 20-SSOP exposed-pad footprint on a board with a solid ground plane and keep analog/digital traces short; bypass VDD with a 0.1µF ceramic capacitor close to the pin. The CS, RD, and INT outputs form a transparent microprocessor-style interface, so the host can poll, interrupt, or strobe conversions without complex configuration. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone, helping procurement and design engineers evaluate the MAX153EAP against modern 8-bit ADC options.

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MAX153EAP+

MAX153EAP+ - 1Msps 8-Bit ADC | Maxim Integrated | SSOP-20

The Analog Devices (formerly Maxim Integrated) MAX153EAP+ is a high-speed, microprocessor-compatible, 8-bit analog-to-digital converter (ADC) that uses a half-flash technique to achieve a 660 ns conversion time and digitizes at a rate of 1 Msps. Housed in a 20-pin SSOP package, the part operates from a single +5 V supply or dual ±5 V supplies and accepts either unipolar or bipolar analog inputs. An ADC (analog-to-digital converter) is a data-conversion integrated circuit that samples a continuous analog voltage and quantizes it into a discrete digital code. The half-flash architecture used in the MAX153 family combines two flash sections to deliver high throughput at moderate cost compared with full-flash devices. Within the broader taxonomy, the MAX153 sits between successive-approximation and full-flash ADCs as a speed-optimized converter for embedded data-acquisition and instrumentation systems. Key features include 1 Msps sampling, 660 ns conversion time, parallel microprocessor-compatible interface, and a dedicated POWERDN pin that reduces supply current to 1 µA between conversions. The 8-bit resolution provides 1 LSB of approximately 19.5 mV over a 0-5 V unipolar input range. Input range selection between unipolar and bipolar modes, plus an external reference input, make the device flexible for single-ended or differential signal acquisition. Operating temperature range is -40 °C to +85 °C for the E-suffix industrial grade. The MAX153 integrates an input track-and-hold, two 4-bit flash ADCs with 1-bit overlap, an error-correction latch, and a state-machine control logic, accessed through a parallel data bus with standard CS and RD strobe inputs. The half-flash topology halves the comparator count versus a full 8-bit flash, reducing die area and input capacitance while still supporting 1 Msps throughput. Typical applications include digital signal processing front-ends, high-speed data acquisition cards, PC plug-in boards, portable instrumentation, and process-control monitoring where a parallel-output ADC simplifies interface to microprocessors and DSPs. The 1 µA power-down mode also suits battery-powered measurement equipment. When designing with the MAX153EAP+, place 0.1 µF bypass capacitors adjacent to the supply pins and observe the analog/digital ground split recommended in the manufacturer datasheet to preserve dynamic performance at full throughput.

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MAX153EAP+T

MAX153EAP+T - 8-Bit 1Msps ADC | Maxim Integrated | SSOP-20

The Analog Devices / Maxim Integrated MAX153EAP+T is a high-speed, microprocessor-compatible, 8-bit analog-to-digital converter that uses a half-flash architecture to achieve 660 ns conversion time and a 1 Msps sampling rate. Housed in a 20-pin SSOP package, it accepts either single +5 V or dual ±5 V analog supplies, with unipolar or bipolar input ranges, and includes a POWERDN pin that drops current consumption to a few microamps during idle periods. The half-flash architecture uses two parallel 4-bit flash converters and an internal 2-bit DAC to digitize the input, achieving an 8-bit result in two passes, balancing speed and die size. An analog-to-digital converter (ADC) translates continuous analog signals into discrete digital codes for processing by microcontrollers, DSPs, or FPGAs. The MAX153 belongs to the successive-approximation and flash ADC family hierarchy, using a half-flash technique that approximates true flash conversion at roughly one third of the die area. Within the broader data converter taxonomy, an ADC such as the MAX153EAP+T is a precision mixed-signal component that bridges analog sensors and digital systems, often feeding digital signal processors, microcontrollers, or instrumentation recording paths. Key features include 8-bit resolution, 1 Msps minimum sampling rate, an external-reference interface, microprocessor-compatible parallel interface (mode 0), and a low shutdown current of approximately 1 µA. The half-flash core achieves a 660 ns conversion time without the power and silicon area penalty of a true 8-bit flash converter. The device supports both AC-specified (1 Msps) and guaranteed-by-design extended-temperature operation, and offers a simple CS-RD write-control interface for direct connection to most microcontrollers. The device operates from a single +5 V supply or dual ±5 V supplies and offers 0 V to +5 V unipolar or ±5 V bipolar analog input ranges. The shutdown mode is engaged by forcing the POWERDN pin LOW, drawing only 1 µA typical, suiting battery-powered data acquisition. Built-in track-and-hold and an external-reference input provide design flexibility for applications needing temperature-compensated or precision references. Typical applications include high-speed digital signal processing, servo control loops, portable or battery-powered data acquisition systems, and communication systems. Industrial grade temperature range covers -40°C to +85°C, while the SSOP-20 footprint simplifies layout in compact designs and is compatible with standard surface-mount assembly lines. Designers should pay attention to the analog and digital supply pins, which must be properly bypassed with 10 µF electrolytic and 0.1 µF ceramic capacitors as close to the pins as possible to achieve the rated SNR. The reference pin requires a low-impedance source such as the MAX152 or a low-noise precision reference to maintain linearity; using a noisy reference will degrade SNR but not necessarily increase INL at 8 bits. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer datasheet alone.

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MAX153EAP-T

MAX153EAP-T - 8-Bit 1Msps ADC with 1µA Power-Down | Maxim Integrated

The Maxim Integrated MAX153EAP-T is an 8-bit analog-to-digital converter featuring a 1 Msps sampling rate, half-flash architecture, and a 1 µA power-down mode, housed in a 20-pin SSOP package. It operates from a single +5V analog supply and a +5V digital supply, providing a parallel microprocessor-compatible interface with three-state outputs. The part is offered in tape-and-reel packaging to support high-volume SMT assembly lines. What is an SAR/half-flash ADC? A half-flash (or sub-ranging flash) ADC is a type of analog-to-digital converter that uses two flash stages and a DAC to achieve moderate resolution (in this case 8 bits) at much higher speed and lower power than a full-flash converter. Within the data converter hierarchy, an 8-bit half-flash ADC sits between a parallel flash ADC (fastest, lowest resolution, highest power) and a successive-approximation-register (SAR) ADC (lower power, slowest). Half-flash parts are commonly used as μP-compatible data acquisition front ends where a single +5V supply simplifies board design. Key features include a 1 Msps minimum sampling rate, single +5V operation with an internal 2.5V reference, a track/hold amplifier on the analog input, and an automatic power-down mode that drops quiescent current to 1 µA between conversions. The parallel interface exposes eight data outputs (D0–D7), a high-Z output enable (OE), a read strobe (RD), and a convert start (CONVST) input, enabling direct connection to 8-bit microcontrollers and DSPs without glue logic. The MAX153EAP-T employs an on-chip track-and-hold that relaxes the input bandwidth requirement and preserves signal integrity at full speed. An external reference can replace the internal 2.5V reference for applications requiring tighter absolute accuracy or ratiometric measurements; reference voltage directly scales the input full-scale range. Typical applications include data acquisition systems, portable instrumentation, battery-powered metering, digital oscilloscope front-end digitizers, and process-control I/O cards. Compared with a full-flash ADC the half-flash approach halves the comparator count, materially reducing power consumption and die area. When designing with this device, observe the +5V supply tolerance (typically ±5%) and respect the analog-to-digital setup/hold times listed in the manufacturer datasheet to avoid linearity errors. For battery-powered designs, leverage the 1 µA power-down mode by gating the CONVST signal so the ADC spends most of its time in shutdown. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers compare the part against pin-compatible Maxim Integrated family members and competitor equivalents.

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MAX153EPP+

MAX153EPP+ - 1Msps 8-Bit ADC with 1uA Power-Down | Analog Devices

The Analog Devices MAX153EPP+ is a 1Msps, microprocessor-compatible, 8-bit analog-to-digital converter using a half-flash architecture to achieve a 660ns conversion time. The device accepts unipolar or bipolar analog inputs, operates from single +5V or dual ±5V supplies, and is packaged in a 20-pin PDIP. Its power-down function reduces supply current to 1uA, making it suitable for low-power measurement and control systems. MAX153EPP+ is identified as a single-input, single-flash, 8-bit ADC by distributor listings. An ADC is a data-acquisition interface that converts an analog voltage into a digital value for processing by a microprocessor, microcontroller, or other digital controller. The MAX153 belongs to the parallel-output ADC family within the broader data-converter and interface IC hierarchy. It combines a 1Msps sampling capability with an 8-bit resolution and a power-down state, which can help control system power consumption when continuous conversion is not required. The MAX153EPP+ provides a 1Msps conversion rate, 660ns conversion time, 8-bit resolution, one analog input, and 1uA power-down current. These specifications make it suitable for industrial control, instrumentation, sensor acquisition, and embedded systems requiring a direct parallel ADC interface. The manufacturer product page identifies the MAX153 as a production device and lists a starting list price of $14.17 as of 2026-10-30. The half-flash conversion architecture is intended to support microprocessor-compatible interfacing while maintaining a 1Msps sampling rate. The device accepts either unipolar or bipolar input arrangements, giving designers flexibility when conditioning signals from sensors, transducers, dividers, and other analog sources. Its 20-pin PDIP package provides a through-hole mounting option for conventional industrial and laboratory boards. Typical applications include process-control monitoring, laboratory measurement equipment, digital panel meters, sensor interfaces, industrial automation, and embedded data-acquisition systems. In each case, the parallel ADC outputs can be read by a suitable processor bus, while the power-down pin can reduce consumption during inactive periods. Designers should verify signal ranges, timing margins, and processor logic levels against the complete manufacturer datasheet. For a new design, confirm the MAX153EPP+ supply configuration, input range, conversion timing, output coding, and processor interface before layout. The provided data does not include a verified complete pinout, thermal ratings, absolute maximum ratings, or detailed timing tables, so those values should be taken directly from the official MAX153 datasheet rather than inferred.

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MAX153EWP+

MAX153EWP+ - 8-Bit 1Msps ADC with Power-Down | Maxim

Analog Devices MAX153EWP+ is a microprocessor-compatible, 8-bit flash analog-to-digital converter with a 1 Msps conversion rate, a 660 ns conversion time, and 1 µA power-down capability in a 20-pin SOIC package. It accepts unipolar or bipolar analog inputs and operates from a single +5 V supply or dual ±5 V supplies. A flash ADC is a sampling data-conversion device that uses parallel internal comparators to convert an analog voltage into a digital code. The MAX153 belongs to the ADC hierarchy within data-converter and signal-processing semiconductors. Its microprocessor-compatible interface supports systems in which a processor reads eight digital output bits and controls acquisition through mode and read/write signals. The principal specifications are an 8-bit resolution and a 1 Msps sampling rate. These characteristics make the converter suitable for high-speed control loops, industrial monitoring, data acquisition, and embedded signal measurement. The half-flash architecture provides the 660 ns conversion time cited in the manufacturer datasheet, while the POWERDN control reduces supply consumption to 1 µA when conversion activity is not required. The MAX153 accepts either unipolar or bipolar input ranges and supports single +5 V or dual ±5 V operation. This supply flexibility lets the same converter support multiple analog-system architectures. The device also includes a 4-bit internal flash DAC associated with the reference and conversion circuitry, supporting reference and offset-oriented system arrangements described by the manufacturer. Typical uses include industrial process monitoring, digital voltmeter and panel-meter front ends, microprocessor-controlled instrumentation, and compact embedded measurement systems. Designers can use the 1 Msps throughput for fast-changing signals, while the 8-bit resolution suits quantization and supervisory control tasks where fine analog accuracy is not the primary requirement. Circuit design should account for input settling, reference stability, supply bypassing, and the required read/write timing. Because this is a high-speed flash converter, source impedance and PCB trace length can affect the time available for the internal sampling network to acquire the input. Use the pin-description and timing diagrams in the manufacturer datasheet when assigning control signals and laying out the analog input path. This product page organizes the MAX153EWP+ electrical characteristics, package information, application guidance, and confirmed drop-in alternatives. It also highlights the distinctions that matter during PCB reuse, including operating-temperature grade and package type, so engineers can verify mechanical and electrical compatibility before approving a replacement.

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MAX154AEWG

MAX154AEWG - 8-Bit 4Ch 2.5us ADC w/ Reference | Maxim Integrated

The Maxim Integrated (now Analog Devices) MAX154AEWG is a CMOS high-speed 8-bit analog-to-digital converter (ADC) with four analog input channels, an internal 2.5V reference, and track/hold, housed in a 24-pin wide-body SOIC (SO-24W) package. It delivers a 2.5 us conversion time per channel using a successive-approximation register (SAR) architecture, with the MAX154AEWG/A grade rated for -40 C to +85 C industrial operation. An analog-to-digital converter (ADC) is a mixed-signal integrated circuit that samples a continuous analog voltage and converts it into a discrete digital code, typically N-bit binary. SAR ADCs use a binary-search successive-approximation algorithm with an internal DAC and comparator, achieving an excellent balance of speed, resolution, and power consumption for data acquisition, instrumentation, and process-control applications. The MAX154 family sits in the hierarchy: SAR ADC -> ADC -> data converter -> mixed-signal IC -> semiconductor. Key features include four single-ended analog inputs (the pin-compatible MAX158 offers eight), a 2.5V internal bandgap reference (5 V external reference also accepted), ratiometric operation, and an on-chip track/hold. The MAX154AEWG provides 1/2 LSB integral nonlinearity and ±1 LSB total unadjusted error, with low-power CMOS design drawing only a few mW during continuous conversion. The MAX154AEWG uses a standard SAR architecture with internal clock generation, allowing simple microprocessor interface through standard CS, RD, and WR control lines. It connects directly to most 8-bit parallel buses without external glue logic. The wide input voltage range (single +5 V supply) and ratiometric capability make it suitable for both absolute and proportional measurements. Typical applications include data acquisition systems, process control, digital signal processing front-ends, multiplexed sensor monitoring, and portable instruments. The four-channel input makes it ideal for low-channel-count multi-signal monitoring without an external MUX. When designing with this device, observe the recommended 0.1 uF decoupling capacitor on VDD, keep analog and digital ground planes separated, and ensure analog inputs stay within the specified input range (0 V to VREF or 0 V to 5 V). This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found on the manufacturer datasheet, giving engineers a single reference for sourcing, comparison, and design-in.

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MAX154BCAG+T

MAX154BCAG+T - 8-Bit 4Ch 400ksps 5V Precision ADC | Maxim

The Maxim MAX154BCAG+T is a CMOS 8-bit, 4-channel, 400 ksps analog-to-digital converter (ADC) with an integrated 2.5 V on-chip reference, housed in a 24-pin SSOP (CAG) package. According to the Maxim MAX154/MAX158 datasheet, this multi-channel ADC features a 2.5 us conversion time, four analog input channels (the MAX158 has eight), and a complete data-acquisition system on chip including track/hold, reference, and three-state output buffers. The B grade (MAX154B) provides +/-1 LSB INL over the commercial 0C to 70C operating range, while the +T suffix indicates Tape & Reel packaging for high-volume assembly. An ADC (Analog-to-Digital Converter) is a data-acquisition IC that translates continuous analog voltages into discrete digital codes, sitting at the boundary between the analog sensor domain and the digital processor domain within the broader signal chain hierarchy of sensor -> analog front end -> ADC -> microcontroller/DSP. The MAX154BCAG+T belongs to the successive-approximation register (SAR) ADC family, the dominant topology for medium-speed, medium-resolution applications up to a few MSPS where deterministic latency and low power consumption matter more than the raw throughput of pipeline ADCs. Its on-chip 2.5 V reference removes the need for an external precision reference IC, simplifying the BOM for cost-sensitive multi-channel systems. Key features include four single-ended analog inputs with software-configurable channel selection, a 2.5 us successive-approximation conversion engine, on-chip 2.5 V reference (and optional external reference mode), three-state digital outputs for direct microprocessor bus interface, single +5 V supply operation with low CMOS power dissipation, and a half-LSB quantization step of 9.8 mV when using the internal 2.5 V reference across the 0 V to 5 V input span. The internal reference also sources up to 5 mA external current, useful for biasing external signal-conditioning circuitry. The MAX154 architecture pairs a capacitive-DAC SAR core with an input track-and-hold and a low-drift buried-zener reference, achieving the +/-1 LSB integral nonlinearity specified for the B grade and providing a complete data-acquisition subsystem in a single IC. The four input channels share a single ADC core through an internal analog multiplexer, reducing silicon cost relative to per-channel dedicated converters at the expense of throughput during sequential channel scans. Typical applications include data-acquisition front ends for industrial process-control PLCs, multi-slot rack-mounted instrumentation, supervisory distribution and data-logging systems, embedded control boards monitoring temperature/pressure/flow sensors, and portable or rack-mount medical-instrument signal chains. The wide supply tolerance and integrated reference also make it attractive for low-cost microcontroller-based measurement nodes. When designing with this ADC, place the 0.1 uF + 10 uF supply bypass capacitors as close as possible to the +VDD and DGND pins to prevent digital noise from coupling into the analog comparator. Use AGND and DGND star-grounding at the IC reference pin, and verify that the source impedance seen at AIN pins stays below 2.5 kohm to keep track-and-hold settling errors below 0.5 LSB at 400 ksps. This page synthesizes distributor pricing, drop-in alternatives from the Maxim MAX154/MAX158 family, and practical design notes not collected in the manufacturer datasheet.

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MAX154BCWG

MAX154BCWG - 8-Bit 400ksps 4-Ch ADC with Reference | Maxim

The Maxim Integrated MAX154BCWG is a CMOS 8-bit analog-to-digital converter with 4 analog input channels, an internal 2.5V reference, and a track-and-hold amplifier, housed in a 24-pin SOIC wide-body package with conversion time of approximately 2.5 us per channel via successive-approximation register (SAR) architecture at up to 400 ksps aggregate throughput. What is an ADC? An ADC (Analog-to-Digital Converter) is a data-converter IC that samples continuous analog voltage signals and translates them into discrete binary codes for digital processing. Within the data-converter hierarchy, the MAX154 sits in the SAR branch (low-latency, deterministic-conversion) rather than the delta-sigma or pipeline branches. The MAX154 family (MAX154 4-channel, MAX158 8-channel) is part of Maxim's multi-channel 8-bit ADC portfolio introduced in the late 1980s and remains in production for legacy industrial and instrumentation designs. Key features include four single-ended analog inputs with on-chip channel selection (user-controlled via address latches), an internal 2.5V bandgap reference (10 ppm/°C typical drift), wide ±5V analog input range accepting bipolar signals, and an on-chip clock that simplifies external interfaces. The 24-pin SOIC wide-body package provides ample thermal headroom for industrial environments from 0°C to +70°C (C-grade). Typical applications include multi-channel data-acquisition systems, process-control instrumentation, battery-powered portable test gear, digital panel meters, and embedded industrial-control I/O modules where several sensor signals must be digitized with a single ADC. Compared with modern 12/14/16-bit SAR ADCs, the 8-bit MAX154 trades resolution for very high sample rate and small channel-count BOM cost. Design consideration: place the MAX154 close to the analog signal source to minimize trace noise, use a 0.1 uF ceramic bypass capacitor at VDD with a 10 uF bulk cap, and buffer the analog inputs with op-amps when the source impedance exceeds 5 kohm. The internal reference can be overdriven by an external reference for applications needing tighter absolute accuracy. This page consolidates distributor pricing, drop-in alternatives, and practical design notes not found in the Maxim datasheet alone.

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MAX155ACPI+

MAX155ACPI+ - 8-Ch 8-Bit 250ksps ADC w/ Simultaneous T/H | Maxim

The Maxim Integrated (Analog Devices) MAX155ACPI+ is an 8-bit, 250 ksps, 8-channel successive-approximation analog-to-digital converter (ADC) with simultaneous track-and-hold stages and an internal 2.5 V reference, housed in a 28-pin PDIP (300 mil) through-hole package. It integrates eight sample-and-hold amplifiers so that all input channels are sampled at the same instant, eliminating channel-to-channel timing skew in multiplexed data-acquisition systems. When operating from a single +5 V supply, the MAX155ACPI+ supports both unipolar and bipolar conversions in single-ended or differential input configurations, with 4 or 8 input channels selectable via software. The device features power-down capability for low-power standby between conversions, an internal +2.5 V reference, and a parallel data interface for high-throughput microprocessor connections. According to the manufacturer datasheet, the MAX155 provides a complete sampling data-acquisition system on a single chip, making it suitable for multi-sensor measurement systems where timing alignment is critical. A successive-approximation register (SAR) ADC is a type of analog-to-digital converter that uses a binary search algorithm to resolve an analog input voltage into a digital code, one bit per clock cycle. SAR ADCs are characterized by low latency (no pipeline delay), deterministic conversion time, and excellent DC accuracy, making them well-suited for multiplexed multi-channel systems, precision DC metering, industrial process control, and data-acquisition front-ends. The MAX155's simultaneous sampling T/Hs set it apart from a generic 8-channel SAR: by capturing all eight inputs at the same moment, downstream digital processing can compute true per-sample differential measurements across the array. Key features include 250 ksps aggregate throughput (with simultaneous sampling across all channels), an internal 2.5 V reference with low drift, software-selectable 4-/8-channel operation, single +5 V supply operation, on-chip T/H per channel, parallel microprocessor interface, and a hardware power-down pin that reduces supply current between conversions. The wide input range supports both single-ended (0-VREF) and true bipolar (±VREF) signals. The MAX155 is built on a BiCMOS process that combines low-noise bipolar analog front-ends with CMOS logic for low power dissipation. Internal clock generation and a self-calibrating architecture minimize external component count, while the parallel interface allows direct connection to microprocessors and FPGAs for high-speed system integration. Typical applications include multi-channel instrumentation and data-acquisition systems, vibration and modal analysis, motor control feedback loops, multichannel process control, medical monitoring front-ends, and any system where multiple analog signals must be sampled simultaneously for time-coherent analysis. When designing with the MAX155ACPI+, ensure the analog input source impedance stays below the value specified in the datasheet to maintain acquisition accuracy. Decouple VDD and AVDR with 10uF tantalum and 0.1uF ceramic capacitors placed close to the pins, and keep analog and digital grounds tied to a single star point to minimize crosstalk. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, including cross-brand comparison and pinout reference.

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MAX155AEWI

MAX155AEWI - 8-Ch 8-Bit ADC Simultaneous T/H +2.5V Ref

The Analog Devices (formerly Maxim Integrated) MAX155AEWI is a high-speed, 8-channel, 8-bit analog-to-digital converter that integrates simultaneous track-and-hold amplifiers, a precision +2.5 V internal reference, and a parallel interface in a 28-pin wide SOIC package. It performs successive-approximation conversions at throughput up to 250 ksps and supports unipolar/bipolar, single-ended/differential input modes from a single +5 V supply. An ADC (analog-to-digital converter) converts continuous analog signals into discrete digital codes, sitting between analog front-ends and digital processing blocks in any data-acquisition system. A successive-approximation register (SAR) ADC, the architecture used in the MAX155, performs bit-by-bit decisions against a reference in a single conversion clock cycle, trading high speed for moderate resolution. ADCs are a sub-category of data converters within the broader mixed-signal semiconductor family; the MAX155 adds simultaneous track-and-hold, an important innovation that lets up to 8 inputs be sampled within a few hundred nanoseconds of each other - critical for phase-coherent multichannel measurements where channel-to-channel skew would otherwise corrupt the result. Key features include eight single-ended or four differential analog input channels, software-configurable unipolar/bipolar ranges, a +2.5 V internal bandgap reference (with optional external reference input), a throughput rate of 250 ksps with 6 microsecond conversion time, and power-down control that drops supply current to under 50 microamps for battery-sparing designs. The MAX155AEWI variant is specified for the -40 °C to +85 °C extended industrial temperature range and is offered in a wide-body 28-SOIC package for robust surface-mount assembly. Inside the device, eight input track-and-hold blocks feed a single shared SAR core and DAC reference ladder; the +2.5 V reference is buffered and brought out to a pin for use by external sensor bridges or ratiometric networks, eliminating a separate reference IC. The parallel interface separates conversion control (WR) from data retrieval (RD), and the channel configuration RAM is addressable through a shared 8-bit bus - this dual mode was a common Maxim innovation in early 1990s data-acquisition parts and is still quoted in modern designs as a clean way to multiplex a single bus. Typical applications include multi-channel data-acquisition front-ends in industrial process instrumentation, sensor array digitizers where simultaneous sampling is required (load-cell weigh scales, vibration monitoring, multi-phase power metering), portable instrumentation powered from +5 V rails, and embedded digital-control loops. The wide SOIC package, single-supply operation, and integrated reference make the part especially attractive for space-constrained designs that need many sampled channels. When using the MAX155AEWI, ensure that the analog inputs remain within the common-mode range of the track-and-hold amplifiers (typically VDD - 1.5 V to GND) and that decoupling includes a 10 microfarad bulk capacitor plus a 0.1 microfarad ceramic close to each supply pin. Because the +2.5 V reference is brought out to a pin, it must be buffered with an op-amp if used to drive low-impedance loads. This page consolidates distributor pricing, drop-in alternatives such as MAX155AEWI+, MAX155ACWI, MAX155BEWI and MAX155BCWI, plus practical design notes not found in the manufacturer datasheet.

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MAX155BEPI+

MAX155BEPI+ - 8-Channel 8-Bit 250ksps SAR ADC | Maxim Integrated

The Maxim Integrated MAX155BEPI+ (now supplied by Analog Devices) is a high-speed, 8-bit, multi-channel successive-approximation analog-to-digital converter (SAR ADC) with 4 or 8 single-ended/differential analog input channels, integrated simultaneous track-and-hold amplifiers, and an internal 2.5V reference, packaged in a 28-pin plastic DIP (PDIP-28) through-hole package. It delivers sampling rates up to 250 ksps and is qualified for the -40C to +85C industrial temperature range, with the "B" speed grade distinguishing it from the slower "A" grade (the "EPI" suffix denotes the industrial temp PDIP package). A SAR ADC is a type of analog-to-digital converter that converts an analog input into a digital code using a binary-search successive-approximation register. SAR ADCs sit in the broader hierarchy: ADC -> data converter -> mixed-signal IC -> integrated circuit. They are favored over delta-sigma and pipeline ADCs when the application needs low latency, deterministic acquisition time, and moderate-to-high sampling rates without pipeline delay, making them common in industrial multiplexing, motor control, and instrumentation loops. The key differentiating features of the MAX155 are its eight simultaneous track/hold amplifiers (one per channel) that eliminate channel-to-channel sampling skew, the internal precision 2.5V reference (saving board space and BOM cost), and a flexible parallel data interface compatible with most microcontrollers and DSPs. Each input channel can be configured as single-ended or differential, and an analog multiplexer under software control selects which channel the SAR core digitizes while all eight T/Hs sample at the same instant. Architecturally, the device combines an 8:1 input MUX, eight dedicated sample-and-hold capacitors, a single shared SAR core, an internal reference buffer, and a parallel output register. This "MUX + simultaneous T/H" topology trades simultaneous-snapshot timing accuracy (typically <50 ns channel-to-channel skew) for the throughput ceiling of one ADC core. The "B" grade offers the fastest conversion time in the MAX155 family. Typical applications for the MAX155BEPI+ include industrial process control data acquisition boards, multi-axis motor position feedback, multiplexed thermocouple or strain-gauge signal chains, simultaneous-sampling vibration/acoustic analyzers, and embedded instrumentation front-ends. The DIP-28 package is friendly to breadboard prototyping, legacy through-hole designs, and educational lab work where surface-mount packages are inconvenient. When designing with this part, ensure the analog inputs remain within the supply rails (typically +/-5V or 0-5V with VDD=+5V, VSS=-5V) and add a 10 nF ceramic bypass on the reference pin to maintain low-noise conversions. Because the part is now in Last Time Buy status per distributor listings, consider the MAX155BEWI+ (SOIC-28) or other drop-in-compatible ADC alternatives listed below for new production runs. This page synthesizes distributor pricing, drop-in compatible 8-channel SAR ADC alternatives, and practical layout/design notes not aggregated in the manufacturer datasheet alone.

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MAX156BCNG

MAX156BCNG - 8-Ch 8-Bit 250ksps ADC w/ T/H | Maxim Integrated

The Maxim Integrated MAX156BCNG is an 8-bit, 8-channel successive-approximation analog-to-digital converter (ADC) with simultaneous track-and-hold amplifiers and an internal 2.5V reference, sampling at up to 250 ksps in a 24-pin PDIP through-hole package. It integrates two or four input channels (selectable via software) with dual simultaneous sample-and-hold stages that capture two analog signals at exactly the same instant, eliminating inter-channel skew in vector measurements. The device operates from a single +5V analog supply plus a digital 5V supply and features a parallel microprocessor interface for fast data transfer. A successive-approximation ADC is a type of data converter that resolves each conversion one bit at a time using an internal binary-search algorithm, offering a favorable trade-off between speed, resolution, and die size compared to flash or sigma-delta architectures. SAR ADCs sit in the hierarchy: ADC -> data converter -> mixed-signal IC -> semiconductor. The MAX156's 8-bit resolution and 250 ksps throughput place it in the mid-speed data-acquisition tier used for instrumentation, video digitizing, and DSP front-ends where 8-bit dynamic range is acceptable. Key features include 8 input channels (software-configurable as 2 or 4 single-ended inputs or differential pairs), simultaneous track-and-hold for paired channels, internal +2.5V reference with external override option, single +5V analog supply plus digital 5V supply, and a parallel interface compatible with most microprocessors. The device guarantees no missing codes over the full operating temperature range and provides ±1 LSB linearity. Typical applications include multichannel data-acquisition systems, simultaneous-sampling instrumentation, DSP front-end analog input stages, industrial process control with multiple sensors, and portable or benchtop test equipment. The internal reference simplifies BOM and layout while keeping the device suitable for cost-sensitive multi-channel designs.

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MAX156BENG

MAX156BENG - 8-Ch 8-Bit 250ksps ADC with T/H | Maxim Integrated

The Maxim Integrated MAX156BENG is a high-speed, 8-channel, 8-bit analog-to-digital converter with simultaneous track-and-hold amplifiers and an internal 2.5V reference, housed in a 24-pin PDIP (DIP-24) through-hole package. It supports throughput up to 250 ksps per channel (278 ksamples/sec aggregate sample rate is reported by some distributor sources) and operates from a single 4.75V to 5.25V analog supply with low 2.7 mA operating current. The MAX156BENG targets multiplexed data-acquisition front-ends where simultaneous sampling of multiple analog inputs is required. A successive-approximation ADC (SAR ADC) is a type of analog-to-digital converter that resolves one bit per clock cycle using a binary search across an internal DAC and comparator, achieving a deterministic conversion time and low latency. The simultaneous track-and-hold front-end on every channel captures all inputs at exactly the same instant, preserving phase relationships between channels - critical for multi-phase power, vibration analysis, and motor-control feedback. This places the MAX156 in the data converter hierarchy: ADC -> data converter -> mixed-signal IC -> semiconductor. Key features include 8 single-ended analog input channels, an internal 2.5V reference, input range of 0V to +2.5V unipolar or ±2.5V bipolar (with external reference and signal conditioning), and software-configurable unipolar/bipolar operation per the device datasheet. The +2.5V reference output can drive external circuitry. The MAX156BENG is the through-hole commercial-temperature variant (0C to +70C); the MAX156BENG+ suffix denotes the industrial-grade (-40C to +85C) version. The 24-pin PDIP footprint supports breadboard-friendly prototyping and easy hand-solder rework. Architecture: an input multiplexer feeds eight track-and-hold amplifiers whose outputs connect to a single SAR core with an integrated reference. Conversion control is via a standard microprocessor-compatible parallel interface with read, convert, and chip-select signals. The device dissipates approximately 13.5 mW at 5V/250 ksps and powers down between conversions for battery-friendly operation. Typical applications include multi-channel data acquisition systems, industrial process control, vibration and modal analysis, motor control phase-current sampling, portable instrumentation, and automated test equipment front-ends. The 250 ksps/channel rate comfortably digitizes audio-bandwidth signals from 8 sensors simultaneously. Design considerations: place 0.1uF bypass capacitors close to VDD and VSS pins; route analog and digital grounds as separate planes tied at a single point near the ADC. The internal reference requires an external capacitor for noise filtering - consult the datasheet for the recommended value. Choose the MAX156BENG+ (industrial grade) for outdoor or industrial environments; the MAX156BENG without suffix is rated 0C to +70C only. This page synthesizes distributor pricing from DigiKey, Mouser and LCSC, drop-in same-package alternatives from the MAX15x and MAX12x Maxim ADC families, and practical layout notes not consolidated in the manufacturer datasheet.

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MAX157ACUA

MAX157ACUA - 10-Bit 108ksps 2-Ch SAR ADC | Maxim Integrated

The Maxim Integrated (now Analog Devices) MAX157ACUA is a low-power, 2-channel, 10-bit successive-approximation analog-to-digital converter (ADC) operating from a single +2.7V to +5.25V supply and housed in an 8-pin µMAX (UMAX) surface-mount package. According to the Maxim datasheet, the device delivers a 108 ksps sampling rate through a 7.4 µs successive-approximation conversion engine and features automatic power-down between conversions to extend battery life in portable applications. The MAX157ACUA communicates with a host microcontroller over an SPI/QSPI/MICROWIRE-compatible serial interface. An SAR ADC (Successive-Approximation Register Analog-to-Digital Converter) is a type of data converter that uses a binary search algorithm combined with an internal DAC to convert an analog input to a digital code, typically one sample at a time with no pipeline latency. SAR ADCs sit within the broader hierarchy of analog-to-digital converters, alongside delta-sigma, pipeline, and flash architectures; they are valued for low power consumption, deterministic latency, and good DC accuracy at moderate sampling rates, making them well-suited for instrumentation, sensor read-out, and embedded data-acquisition designs. Key differentiating features of the MAX157ACUA include a 2-channel input mux (2 analog inputs selectable through software), an integrated +2.5V reference (factory-trimmed, with REF option on select variants), an external reference input for flexibility, low operating supply current, and hardware/software shutdown mode that drops the supply current to < 1 µA in standby. The wide 2.7V-5.25V supply range permits operation directly from a single-cell Li-ion battery or a 3.3V/5V regulated rail. Architecturally, the MAX157ACUA employs a charge-redistribution DAC with a built-in sample-and-hold, controlled by an SAR logic core that produces 10-bit results over four internal clock cycles. The device supports both unipolar (0-VREF) and pseudo-bipolar (VREF/2 offset) input ranges when driven in two's-complement mode, providing flexibility for single-supply signal-chain applications. Typical applications for the MAX157ACUA include portable data loggers, battery-powered sensor read-out boards, industrial process-control loops, panel meters, and embedded system front-ends where low power and small footprint matter more than extreme sampling speed. This page synthesizes distributor pricing, drop-in alternatives, and practical design guidance not found in the manufacturer datasheet alone. When designing with this device, place a 0.1 µF decoupling capacitor close to the VDD pin and a 10 µF bypass on the reference output if the internal reference is used. Operating at the higher 5 V supply yields the best dynamic range, but always observe the absolute-maximum VDD rating from the datasheet.

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MAX157ACUA+T

MAX157ACUA+T - 10-Bit 108ksps 2-Ch SAR ADC, 8-uMAX | Maxim Integrated

The Maxim Integrated MAX157ACUA+T is a low-power, 10-bit, 2-channel, 108 ksps successive-approximation analog-to-digital converter (ADC) in an 8-pin µMAX/uSOP package with tape-and-reel packaging. It operates from a single +2.7 V to +5.25 V supply and consumes only 1.3 mA at full sampling rate, dropping to under 1 µA in its automatic power-down mode between conversions. A SAR (Successive-Approximation Register) ADC is a type of Nyquist-rate data converter that performs one binary search per clock cycle to resolve the input voltage against an internal DAC. SAR ADCs sit in the converter hierarchy as a sub-class of ADC -> data converter -> mixed-signal IC, alongside delta-sigma, pipeline, and flash architectures. Because SAR converters sample on demand and present a single conversion result per start pulse, they are the dominant topology for multiplexed multi-channel low-latency acquisition in micro-controller-based embedded designs, where the converter is co-located with a SPI/QSPI/MICROWIRE host. Key features of the MAX157ACUA+T include two single-ended analog input channels (AIN1, AIN2) selected via software, an on-chip +4.096 V reference (no external reference required for absolute measurements), an internal 4 MHz oscillator, a 7.4 µs successive-approximation core, and a serial interface compatible with MICROWIRE, QSPI, and SPI-compatible hosts. The +T suffix denotes tape-and-reel packaging for high-volume SMT assembly. The MAX157ACUA+T is intended for battery-powered and space-constrained systems where both low power and small PCB footprint matter. Typical applications include portable data loggers, sensor signal conditioning, loop-powered 4-20 mA transmitters, handheld instrumentation, and battery management monitoring where a 10-bit result is sufficient. The internal reference and 2-channel input multiplexer eliminate the external reference and analog switch, reducing BOM cost and board area. Designers should note the 8-pin µMAX footprint and the SPI/QSPI-compatible 4-wire serial interface. Because the device is a SAR converter, an external anti-aliasing RC low-pass filter on each analog input is recommended when wideband noise exceeds the Nyquist frequency relative to the 108 ksps sampling rate. This page synthesizes distributor pricing from DigiKey and Octopart, drop-in replacement cross-references from same-family Maxim parts, and design considerations not found in the manufacturer datasheet, including external reference options and analog front-end filter recommendations for the 108 ksps sample rate.

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MAX157AEPA

MAX157AEPA - 108ksps 10-Bit 2-Ch Serial ADC | Maxim Integrated

The Maxim Integrated MAX157AEPA is a +2.7V, low-power, 2-channel, 108ksps, serial-interface, 10-bit analog-to-digital converter (ADC) housed in an 8-pin PDIP package. The "EPA" suffix denotes the PDIP-8 industrial-temperature grade variant, while the closely related MAX157AEPA+ adds lead-free/RoHS-compliant processing and the MAX157BCPA/MAX157BEPA offer the commercial and extended-temperature grades respectively. It features a successive-approximation register (SAR) ADC core with a 7.4 microsecond conversion time, automatic power-down between conversions, and an SPI/QSPI/MICROWIRE-compatible serial interface that minimizes microcontroller pin count. An ADC (Analog-to-Digital Converter) is a mixed-signal integrated circuit that converts a continuous analog input voltage into a discrete digital code word. SAR ADCs use a binary-search algorithm implemented with a capacitive DAC and comparator to digitize each sample in N clock cycles for N-bit resolution, providing an excellent trade-off between speed, accuracy, and power. The MAX157AEPA belongs to the SAR ADC sub-family within the broader data-converter hierarchy (ADC -> data converter -> mixed-signal IC -> semiconductor). The MAX157/MAX159 family specifically targets low-power, multi-channel, serial-output applications where PCB area and quiescent current are at a premium. Key specifications include a single +2.7V to +5.25V analog supply range, two true-differential or single-ended input channels (the MAX159 variant is single-channel true-differential; the MAX157 offers two single-ended channels), an integrated +4.096V or external reference option, an INL of plus or minus 0.5 LSB, a DNL of plus or minus 1 LSB, an operating current of approximately 1.2 mA at full speed, an automatic power-down current of typically under 1 microamp between conversions, and an industrial operating temperature range of -40C to +85C. The serial interface runs at clock rates up to approximately 2.5 MHz to support the 108 ksps throughput, and the part accepts either an internal 2.5V reference or an external reference up to VDD. Architecturally, the MAX157AEPA uses a charge-redistribution SAR ADC with input track-and-hold, an on-chip clock, and a digital serial engine that streams out MSB-first data. The internal reference and reference-buffer architecture provide low drift across temperature while keeping the external component count to a single bypass capacitor. Hardware shutdown control through the active-low SHDN pin combined with automatic wake-up between conversions makes the part well-suited to battery-powered data logging, portable instrumentation, and loop-powered sensor transmitters where average current dominates battery life. Typical applications include portable battery-powered data acquisition, pen-digitizers and touch-screen controllers, portable medical instruments, isolated industrial sensor front-ends, loop-powered 4-20 mA transmitters, and instrumentation clusters. The wide supply range and low quiescent current also suit automotive body controllers and HVAC sensor interfaces where the part operates directly from a regulated 5V or 3.3V rail. When designing with the MAX157AEPA, place the 10 microfarad and 0.1 microfarad supply-bypass capacitors as close as possible to the AVDD and DVDD pins and route the analog and digital grounds to a single star-ground point to avoid digital switching noise coupling into the analog input. For best noise performance, configure the input in single-ended unipolar mode and use the on-chip 2.5V reference rather than an external rail-divider. This page synthesizes distributor pricing, drop-in same-package and same-brand alternatives, and practical PCB layout notes not found in a single distributor product page.

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MAX157BCPA

MAX157BCPA - 10-Bit 108ksps 2-Ch Serial ADC | Maxim Integrated

The Maxim Integrated MAX157BCPA is a 10-bit, 2-channel, 108 ksps successive-approximation analog-to-digital converter (SAR ADC) in an 8-pin PDIP package, operating from a single +2.7V to +5.25V supply. It integrates automatic power-down, a fast 2.5 µs wake-up, an on-chip clock, and a high-speed 3-wire SPI/QSPI/MICROWIRE-compatible serial interface, consuming only 3.2 mW at VDD = +3.6V during continuous conversion. An SAR ADC (Successive Approximation Register Analog-to-Digital Converter) is a type of data converter that uses a binary-search algorithm and an internal capacitive DAC to resolve an analog input to N bits in N clock cycles. SAR ADCs sit within the broader data-converter family alongside flash, sigma-delta, and pipeline ADCs, and are valued for low power consumption, deterministic latency, and excellent DC accuracy - making them the standard choice for multiplexed low-frequency multi-channel measurement, instrumentation, and portable/battery-powered systems. Key specifications include 108 ksps sampling rate, 7.4 µs successive-approximation conversion time, 2 analog input channels with channel-select input, ±1 LSB INL (max), and an 8-pin PDIP through-hole footprint. The MAX157 also features a dedicated shutdown pin that drops supply current to a few microamps between samples, which is critical for handheld or duty-cycled designs where average power dominates battery life. Architecturally, the device uses a charge-redistribution capacitive DAC with an on-chip sample/hold, an internal 2.5 MHz oscillator for conversions, and a straight binary output code. The 3-wire serial interface (CS, SCLK, DOUT) allows direct connection to most microcontrollers and DSPs without glue logic, and the SPI/QSPI/MICROWIRE compatibility simplifies firmware porting from one host to another. Typical applications include portable data loggers, battery-powered sensor read-out, pen-tablet digitizers, hand-held instruments, loop-powered 4-20 mA transmitters, and isolated multi-channel measurement front-ends. The wide +2.7V to +5.25V supply range supports both 3.3V and 5V MCU rails, and the two-channel mux allows dual-sensor sampling (e.g., temperature + pressure) with a single ADC. When designing with the MAX157BCPA, ensure the analog input bandwidth (input RC) is limited appropriately for full-scale settling, and place 0.1 µF bypass capacitors close to the supply pin. Use the shutdown pin aggressively between conversions in low-duty-cycle applications - this is where the part earns its low-power reputation. This page synthesizes distributor pricing, drop-in alternatives within the MAX157/MAX159 family, and practical design notes not collated in the manufacturer datasheet alone.

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製品 (39,000+)

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MAX153CWP+ - 8-Bit 1MSPS ADC with Power-Down | Analog Devices

MAX153EAP - 1Msps 8-Bit ADC, 1µA Power-Down, 20-SSOP | Maxim

MAX153EAP+ - 1Msps 8-Bit ADC | Maxim Integrated | SSOP-20

MAX153EAP+T - 8-Bit 1Msps ADC | Maxim Integrated | SSOP-20

MAX153EAP-T - 8-Bit 1Msps ADC with 1µA Power-Down | Maxim Integrated

MAX153EPP+ - 1Msps 8-Bit ADC with 1uA Power-Down | Analog Devices

MAX153EWP+ - 8-Bit 1Msps ADC with Power-Down | Maxim

MAX154AEWG - 8-Bit 4Ch 2.5us ADC w/ Reference | Maxim Integrated

MAX154BCAG+T - 8-Bit 4Ch 400ksps 5V Precision ADC | Maxim

MAX154BCWG - 8-Bit 400ksps 4-Ch ADC with Reference | Maxim

MAX155ACPI+ - 8-Ch 8-Bit 250ksps ADC w/ Simultaneous T/H | Maxim

MAX155AEWI - 8-Ch 8-Bit ADC Simultaneous T/H +2.5V Ref

MAX155BEPI+ - 8-Channel 8-Bit 250ksps SAR ADC | Maxim Integrated

MAX156BCNG - 8-Ch 8-Bit 250ksps ADC w/ T/H | Maxim Integrated

MAX156BENG - 8-Ch 8-Bit 250ksps ADC with T/H | Maxim Integrated

MAX157ACUA - 10-Bit 108ksps 2-Ch SAR ADC | Maxim Integrated

MAX157ACUA+T - 10-Bit 108ksps 2-Ch SAR ADC, 8-uMAX | Maxim Integrated

MAX157AEPA - 108ksps 10-Bit 2-Ch Serial ADC | Maxim Integrated

MAX157BCPA - 10-Bit 108ksps 2-Ch Serial ADC | Maxim Integrated