ADC/DAC
产品（2518)
MAX165BCWN - 5µs 8-Bit ADC with Track/Hold, SOIC-18 | Maxim Integrated
The Maxim Integrated MAX165BCWN is a 5µs, 8-bit, microprocessor-compatible analog-to-digital converter (ADC) with an integrated track-and-hold amplifier and internal +1.23V reference, housed in an 18-pin SOIC (Wide, 0.300") package. The device operates from a single +5V supply, accepts a single-ended analog input ranging from 0V to 2×VREF (≈2.46V with internal reference), and provides a parallel 8-bit output word with standard CS and RD interface signals for direct connection to 8-bit microprocessors. An ADC (analog-to-digital converter) is a data-acquisition component that converts continuous analog voltages into discrete digital codes. Within the converter hierarchy, the MAX165 is a successive-approximation-register (SAR) ADC, the dominant topology for medium-speed multi-MHz-to-low-MHz applications because it offers deterministic latency, no pipeline delay, and excellent DC accuracy. SAR ADCs sit beneath the broader categories of data converters and signal-chain ICs, and are commonly used as the final digitizing stage between analog sensors and a host microcontroller or processor. The defining features of the MAX165 include a 5µs conversion time (200 kSPS throughput), an on-chip track/hold capable of acquiring full-scale signals up to 50kHz (386 mV/µs slew rate), and an internal low-drift buried-zener reference. The 18-SOIC wide-body package provides 18 gull-wing pins on 0.300" body width, allowing hand-soldering and easy prototyping. The commercial-grade temperature range (0°C to +70°C) targets bench-top instrumentation, industrial control boards, and embedded data-acquisition systems. Architecturally, the MAX165 uses a capacitive charge-redistribution SAR core with an auto-zeroed input comparator and a track/hold front end, achieving ±1 LSB total unadjusted error and excellent linearity without user calibration. The internal reference is trimmed to ±1% and can be overdriven by an external reference for applications requiring tighter absolute accuracy or a different full-scale range. Typical applications include digital panel meters, portable instrumentation, process-control analog front ends, weigh scales, and embedded data-acquisition cards for 8-bit microcontrollers such as the 8051, 68HC11, or Z80. Designers select the MAX165 specifically when they need an 8-bit ADC with built-in reference and track/hold, parallel interface, and minimal external component count on a single +5V rail. When designing with this part, note that the wide SOIC package and 0.295" (7.5 mm) body width require larger PCB land patterns than the narrow-body SOIC-18. The internal reference pin (REF) should be bypassed with 4.7µF minimum to preserve ADC noise performance, and analog/digital grounds should be tied at a single point under the IC. This page synthesizes distributor pricing, pin-compatible drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single source for evaluating the MAX165BCWN against current sourcing options and modern replacements.
MAX166ACPP - 5µs 8-Bit ADC with T/H and Reference | Maxim Integrated
The Maxim Integrated (Analog Devices) MAX166ACPP is a high-speed, 5µs, 8-bit, microprocessor-compatible analog-to-digital converter (ADC) with an integrated track-and-hold (T/H) amplifier and internal +1.23V reference, housed in a 20-pin PDIP (0.300", 7.62mm) through-hole package. It accepts single-ended input voltages ranging from 0V to 2VREF, supports a +5V single supply, and is offered in the commercial 0°C to +70°C temperature grade. A successive-approximation-register (SAR) ADC is a type of data converter that uses a binary-search algorithm to determine each bit of the digital output in sequence, achieving both high speed and moderate resolution without the latency of integrating topologies. SAR ADCs sit within the broader hierarchy of analog-to-digital converter -> data converter -> signal chain IC -> semiconductor, and remain the architecture of choice for multiplexed data-acquisition systems and microprocessor interfaces because they perform a single conversion on command rather than continuously integrating. The MAX166ACPP key feature set includes a 5µs conversion time, an integrated track-and-hold capable of digitizing full-scale signals up to 50kHz (386 mV/µs slew rate), an internal 1.23V reference (with provision for an external reference), and a parallel 8-bit output bus. Standard CS (chip-select) and RD (read) control signals enable direct, glue-less interfacing to all popular 8-bit microprocessors. The differential-input MAX166 accepts bipolar-style signals up to ±VREF when configured with the appropriate input network. Architecturally, the MAX166 combines a CMOS SAR core with an on-chip T/H and reference buffer to deliver throughput in excess of 140 ksps. The internal reference uses a buried-zener topology for low drift over temperature, and the digital I/O is TTL/CMOS-compatible. Housed in the legacy 20-pin PDIP footprint (7.62mm body width), the MAX166ACPP is well-suited to legacy industrial control boards, retrofit designs, and through-hole prototyping where surface-mount ADCs are not an option. Typical applications include process-control data acquisition boards, multiplexed sensor readout systems, instrumentation front-ends, panel meters, and 8-bit microprocessor analog input modules. The MAX165 single-ended variant is commonly paired with the MAX166 for systems requiring both single-ended and differential channels. When designing with the MAX166ACPP, ensure that VREF decoupling (typically 4.7µF tantalum in parallel with 0.1µF ceramic) is placed close to the REF pin to minimize conversion noise, and that the analog input bandwidth is kept below 50kHz to satisfy the track-and-hold acquisition time. Compared with modern 12-bit SAR ADCs, the MAX166 trades resolution for cost and speed in legacy 8-bit architectures.
MAX166AEPP+ - 8-Bit 200ksps ADC, 5μs, +5V, PDIP-20 | Maxim
The Maxim Integrated MAX166AEPP+ is a high-speed, microprocessor-compatible 8-bit analog-to-digital converter (ADC) with an internal track-and-hold, providing 200 ksps throughput (5 μs conversion time) on a single +5V supply. Housed in a 20-pin PDIP (PDIP-20 / 0.300 inch) through-hole package, it integrates an on-chip +2.46V precision reference and a successive-approximation register (SAR) architecture, eliminating the need for external reference components in many designs. A successive-approximation ADC (SAR ADC) is a type of analog-to-digital converter that uses a binary-search algorithm against an internal DAC to digitize an analog input. SAR ADCs sit within the broader ADC family, between flash converters (fastest, lowest resolution) and sigma-delta converters (highest resolution, lowest speed). They are the workhorse choice for 8 to 16-bit general-purpose data acquisition, multiplexing, industrial control, and embedded instrumentation because they deliver a clean single-shot latency, deterministic timing, and low power. The MAX166AEPP+ belongs to this family, occupying the high-speed, moderate-resolution end of the spectrum. Key features of the MAX166AEPP+ include ±1 LSB total unadjusted error, a 2.46V internal reference with ±1.5% accuracy, ±5V input range with software-configurable unipolar/bipolar modes, and ratiometric conversion capability. Standard CS and RD control signals provide direct interface to 8-bit microprocessors, with a BUSY output flagging conversion start and end. The latched, three-state buffered outputs allow direct connection to a microprocessor data bus without external glue logic. Typical applications include digital signal processing, high-speed data acquisition, telecomm digitizing, process control, and instrumentation-grade analog front ends. The internal reference and T/H make it suitable for systems where board area and external BOM count must be minimized. When designing with this part, ensure the analog input signal bandwidth is below the T/H acquisition limit and that the +5V supply is well decoupled. The 5 μs conversion time directly limits maximum sample rate to 200 ksps.
MAX166AEWP - 8-Bit 200ksps SAR ADC | Maxim Integrated
The Maxim Integrated MAX166AEWP is a CMOS, μP-compatible 8-bit successive-approximation analog-to-digital converter (ADC) with a 5 μs conversion time and a 200 ksamples/s sample rate, housed in a 20-pin SO (SOIC-20, 0.300 inch) wide-body package. It integrates an internal track-and-hold amplifier and a buried-zener or bandgap-derived precision reference, providing an input range of 0 V to 2.46 V (or 0 V to 5 V when configured with external reference) from a single +5 V analog supply plus a digital supply that may range from +4.75 V to +5.25 V. The MAX166AEWP delivers ±1/2 LSB linearity, ±1 LSB total unadjusted error, and a track/hold bandwidth of approximately 4 MHz, with low power consumption around 4 mA active and 1 μA power-down for battery-aware designs. An 8-bit successive-approximation ADC (SAR ADC) is a type of data converter that converts an analog input voltage into an 8-bit digital code through a binary-search algorithm executed in N clock cycles (here, ~8 × 500 ns). SAR ADCs sit in the broader hierarchy: ADC → data converter → mixed-signal IC → semiconductor. They are favored over flash ADCs for moderate resolution at low power, and over integrating ADCs for higher sampling rates, making them ideal for embedded systems that need to digitize several analog channels without excessive processor overhead. Key features of the MAX166AEWP include a parallel output interface that simplifies connection to microprocessors and DSPs, an asynchronous RD and CS handshake for memory-mapped or port-mapped operation, and a hardware power-down pin that drops quiescent current to microamp levels for portable instrumentation. The track/hold front-end samples full-scale input transitions without slewing distortion up to the rated 200 ksamples/s, while the internal reference saves board space compared to discrete-resistor or external-reference designs. Typical applications include industrial process-control front ends, data-acquisition front ends for 8-bit instrumentation, portable battery-powered metering, multiplexed data-logger channels, and digital-signal-processor (DSP) analog front ends. Industrial temperature-grade variants such as the MAX166AEWP-T operate from -40 °C to +85 °C, supporting factory-floor deployment. When designing with the MAX166AEWP, ensure the analog input source can drive the track/hold sampling capacitor without attenuation - an op-amp buffer is recommended for high-impedance sources. Decouple both AVDD and DVDD separately with 0.1 μF ceramic capacitors placed within 5 mm of the supply pins, and place the input trace away from noisy digital output lines to preserve 8-bit accuracy.
MAX166BEPP - 5µs 8-Bit µP-Compatible ADC with T/H | Maxim Integrated
The Maxim Integrated MAX166BEPP is a high-speed, microprocessor (µP)-compatible 8-bit analog-to-digital converter (ADC) with a 5 µs conversion time, integrated track/hold (T/H), and internal reference, housed in a 20-pin PDIP (EPP) package. What is an ADC? An analog-to-digital converter is a data-conversion integrated circuit that samples a continuous analog input voltage and converts it into a discrete digital code. The MAX166BEPP belongs to the successive-approximation-register (SAR) ADC family, which sits within the broader data-converter IC category, itself a sub-category of signal-chain semiconductors. The µP-compatible output bus and 8-bit resolution make it a classic component for embedded data-acquisition front-ends. Key features include a 5 µs (typical) conversion time, on-chip track/hold that supports input signals up to 50 kHz (386 mV/µs slew rate), a built-in +2.5 V reference, and low power dissipation. The parallel data interface uses standard microprocessor read cycles, allowing the ADC to be memory-mapped or port-mapped directly to common 8-bit controllers and DSPs of its era. The MAX166 architecture uses a successive-approximation register with a capacitive-charge redistribution DAC array. The integrated T/H eliminates the need for an external sample-and-hold amplifier, simplifying the analog front-end. Operating from a single +5 V supply (with an optional -5 V for bipolar input ranges), the part consumes roughly 70 mW during active conversion. Typical applications include digital signal processing front-ends, process control data acquisition, portable instrumentation, and anywhere a microcontroller needs a compact 8-bit analog input channel. When designing with the MAX166BEPP, ensure the analog input is driven by a low-impedance source (a buffer amp is recommended) to avoid sample-rate-dependent gain errors. The reference decoupling capacitor and the supply bypass layout directly affect the noise floor at low signal levels. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the Maxim datasheet alone.
MAX166BEWP - 8-Bit 200ksps 5µs ADC + 2.46V Ref | Maxim Integrated
The Analog Devices (formerly Maxim Integrated) MAX166BEWP is a CMOS, microprocessor-compatible, 8-bit successive-approximation analog-to-digital converter (ADC) with an integrated track/hold and an internal 2.46 V reference, packaged in a 20-pin SOIC (0.300 inch wide). It converts a single analog input channel in 5 µs (200 ksps) and exposes a parallel 8-bit data bus directly to an 8-bit microcontroller or system I/O port through standard CS and RD control signals. A BUSY output flags the start and end of each conversion, while the latched, three-state-buffered data outputs allow direct connection to a shared µP data bus. An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that converts a continuous analog voltage into a discrete digital code. Successive-approximation-register (SAR) ADCs such as the MAX166 combine a sample-and-hold front-end, an internal DAC, and a comparator to perform one bit per clock cycle, yielding deterministic latency and excellent DC linearity for multiplexed data-acquisition and process-control front ends. Within the broader taxonomy, the MAX166 sits at: ADC -> data converter -> mixed-signal IC -> semiconductor. Key features of the MAX166 include 5 µs conversion time (200 ksps throughput), an internal 2.46 V bandgap reference, a single +5 V supply operation, and an on-chip track/hold that removes the need for an external sample-and-hold amplifier. The interface is a multiplexed /CS, /RD, /BUSY handshake, and the part is specified over the -40 °C to +85 °C industrial temperature range. Three-state latched outputs ease bus sharing across multiple peripherals. Architecturally, the MAX166 uses a switched-capacitor charge-redistribution DAC core, which is why the track/hold can be co-integrated with the comparator and reference without the linearity penalty of older resistor-string designs. The internal reference provides low drift over temperature, simplifying analog front-end design and removing external trim steps in production. Compared with flash ADCs of equivalent resolution, the MAX166's SAR topology trades conversion speed for substantially lower power consumption and much smaller die area. Typical applications include process-control front ends, portable data loggers, industrial instrumentation, remote sensor readback, panel-meter designs, and embedded µP data-acquisition boards where deterministic conversion latency and direct bus interface matter more than multi-Msample throughput. The 20-pin SOIC footprint also supports hand-prototyping and breadboarding without fine-pitch assembly. When designing with this part, place a 0.1 µF ceramic bypass capacitor directly across VDD and AGND as close to the pins as possible, and keep analog input traces short and guarded to limit digital coupling. Ensure the µP completes a read of the result register before the next conversion finishes, or use the BUSY line to gate access and avoid bus contention. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that go beyond the manufacturer datasheet, helping engineers select, source, and qualify the MAX166BEWP for production designs.
MAX166CEPP - 5us 8-Bit ADC w/ T/H + Reference | PDIP-20 | Maxim
The Maxim Integrated (now Analog Devices) MAX166CEPP is a 5-microsecond, 8-bit analog-to-digital converter with an integrated track-and-hold amplifier and on-chip voltage reference, housed in a 20-pin PDIP through-hole package. The part delivers 200 ksps throughput over a single +5V analog supply with low-power CMOS construction and an architecture based on successive approximation. An 8-bit ADC (analog-to-digital converter) is a mixed-signal integrated circuit that quantizes an analog input voltage into one of 256 discrete digital codes, sitting in the broader hierarchy of data converter (ADC/DAC) -> mixed-signal IC -> semiconductor. The MAX166 belongs to the successive-approximation-register (SAR) family, the dominant topology for medium-speed, medium-resolution conversion in microprocessored systems because of its deterministic latency and ease of microprocessor interfacing. Key features include 5 us typical conversion time (200 ksps throughput), on-chip +2.46V reference (max 50 ppm/C drift), track/hold with 50 ns acquisition time, ratiometric operation, three-state latched outputs, BUSY/INT signal, and standard CS and RD control for direct 8-bit microprocessor bus connection. The single +5V supply eliminates the need for a negative rail, simplifying analog front-end design. The MAX165/MAX166 family uses a switched-capacitor charge-redistribution DAC, a precision comparator, and a buried-zener-style reference to achieve total unadjusted error of +/-1 LSB. Three-state latched outputs and standard CS/RD/WR controls allow direct glue-less connection to 8080, 68xx, Z80, and similar 8-bit buses without external latches. Typical applications include industrial process control loop digitizing, portable data-acquisition front ends, DSP analog front ends, and battery-powered instrumentation. The low 2.5 mA operating current and 1 mA power-down mode also make it suitable for hand-held meters where battery life is critical. When designing with this part, mind the analog/digital ground split: tie AGND and DGND together at a single point near the package to avoid digital ground currents corrupting conversion accuracy. Add a 10 uF bypass close to VDD and keep the analog input trace short. This page synthesizes distributor inventory, drop-in SAR-ADC alternatives, and a pinout reference for the DIP-20 footprint - all consolidated on a single verified page that individual datasheet PDFs and distributor listings do not provide.
MAX166CEWP - 8-Bit 200ksps SAR ADC with T/H & Reference | Maxim
The Maxim Integrated (now Analog Devices) MAX166CEWP is a CMOS, μP-compatible, 8-bit successive-approximation analog-to-digital converter (SAR ADC) with 200 ksps throughput, an internal track-and-hold amplifier, and an on-chip 2.46 V bandgap reference, housed in a 20-pin SO (wide SOIC, 0.300 inch) package. A successive-approximation ADC is a type of data converter that uses a binary-search algorithm against an internal precision reference to digitize an analog input. The SAR architecture, combined with an integrated track-and-hold, delivers a 5 μs conversion time plus acquisition time while eliminating the need for an external reference. The MAX166 occupies a defined place in the signal-chain hierarchy: ADC → data converter → mixed-signal IC → semiconductor. Key features include a single 5 V analog supply (with separate analog and digital grounds), an 8-bit parallel microprocessor interface with three-state latched outputs, standard chip-select (CS) and read (RD) control inputs, a BUSY status output, and an input range of 0 V to 2.46 V (or 0 V to VREF when an external reference is driven into the REF pin). Throughput is 200 ksps, conversion time is 5 μs, and the operating temperature range is -40 °C to +85 °C (C-grade / commercial-industrial). Typical applications include process-control data acquisition, portable instrumentation, isolated industrial front ends, and embedded 8-bit microcontroller analog input modules where a small, reference-inclusive ADC simplifies the BOM and saves PCB area. Because the reference and T/H are integrated, the MAX166 is a strong fit for 4 mA-to-20 mA loop digitization through a single op-amp front end. When designing with this device, place the 10 μF/0.1 μF decoupling pair as close as possible to VDD and AGND, keep the analog input trace short and guarded, and tie unused digital outputs (DB0-DB7) high through pull-ups if the bus will be shared with other peripherals. The MAX166C variant (commercial temperature range) is pin-compatible with the MAX166E extended-temperature version and with the MAX165 family. This page consolidates distributor stock, parametric comparison, and PCB design notes that supplement the manufacturer datasheet with selection and sourcing context.
MAX166DCPP - 5µs 8-Bit ADC with T/H, 20-PDIP | Maxim Integrated
The Maxim Integrated MAX166DCPP is a 5µs, 8-bit analog-to-digital converter (ADC) with an on-chip track-and-hold amplifier and 2.46V internal reference, housed in a 20-pin plastic DIP (PDIP-20) through-hole package. It is part of the MAX165/MAX166 family of CMOS, microprocessor-compatible ADCs that deliver successive-approximation conversions at up to 200 ksps, with the suffix codes (DC = commercial, D = -40°C to +85°C, C = 0°C to +70°C suffix variant) defining the operating-temperature window and grade. An SAR (successive-approximation register) ADC is a type of analog-to-digital converter that uses a binary-search algorithm against an internal DAC to converge on the input voltage in N clock cycles for an N-bit result. In the broader IC hierarchy, an SAR ADC belongs to the data-converter family, which sits under mixed-signal ICs alongside DACs, comparators, and ADCs; this category is essential wherever analog transducers (sensors, audio, instrumentation) must interface to digital microcontrollers, processors, or DSPs. The MAX166's integrated track/hold allows it to acquire full-scale sine-wave inputs up to 50 kHz (386 mV/µs slew rate) without distortion, which is a key engineering advantage over ADCs without front-end T/H stages. Key specifications include 5µs conversion time (200 ksps throughput), 8-bit resolution with single-ended analog input, on-chip 2.46V reference (stable to ±5% over temperature), parallel μP-compatible digital interface, and single +5V analog supply operation. The device also features low power dissipation of approximately 30 mW typical and a software-friendly RD/CS logic interface that connects directly to 8051, 68HC11, PIC and other common microcontroller buses. Architecturally, the MAX166 combines a capacitive-charge-distribution DAC with a high-speed comparator and SAR control logic, plus a sample-and-hold gate that holds the input during conversion. This topology avoids the missing-code issues common to lower-cost 8-bit ADCs and gives true 8-bit linearity across the full -40°C to +85°C industrial temperature range. Typical applications include portable instrumentation, data-acquisition front ends, process-control loops, audio metering, and microprocessor-based measurement systems. Because of its parallel interface and through-hole package, the MAX166DCPP is also widely used in legacy industrial designs, educational kits, and prototyping breadboard systems where SOIC would be impractical. The MAX166 is a recommended replacement for industry-standard AD7574 / AD670 in new and existing designs. When designing with the MAX166DCPP, observe the analog/digital ground separation guidelines in the datasheet to avoid digital switching noise coupling into the reference or analog input. Decouple VDD with both a 10µF tantalum and a 0.1µF ceramic placed as close as practical to the supply pin, and keep the REF pin bypassed with a 4.7µF capacitor to preserve ADC linearity. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical layout guidance not found on a single distributor page.
MAX167CC/D - 12-Bit 100ksps ADC w/ T/H Die | Maxim Integrated
The Maxim Integrated (Analog Devices) MAX167CC/D is a CMOS, 5V-input, 100ksps, 12-bit successive-approximation analog-to-digital converter with on-chip track-and-hold and an integrated reference, supplied as a bare die (D/C suffix). It is the last-time-buy version of the original MAX167 ADC family. Per the Maxim MAX167 datasheet, the device combines a high-bandwidth T/H front end with a successive-approximation register ADC core to digitize 0-5V analog inputs at up to 100,000 samples per second while drawing modest supply current. An ADC (analog-to-digital converter) is a data-acquisition IC that translates a continuous analog voltage into a discrete digital code; successive-approximation register (SAR) ADCs use a binary-search algorithm with an internal DAC to converge on the input value in N clock cycles, achieving a balance of speed, accuracy, and low power consumption. The MAX167 sits within the broader hierarchy: ADC -> data converter -> data-acquisition IC -> signal-chain IC -> mixed-signal semiconductor. SAR ADCs are widely used in industrial process control, instrumentation, and embedded sensor interfaces where 8-to-16-bit resolution at 10ksps-1Msps is sufficient. Key features of the MAX167CC/D include 12-bit resolution with no missing codes, a built-in 2.5V bandgap reference (with external buffer option), ±5V input range with single +5V supply, software-configurable analog input multiplexer, and an industry-standard parallel microprocessor interface. The on-chip track-and-hold sustains full-scale step settling beyond the ADC's Nyquist bandwidth, allowing accurate conversion of fast-changing signals without an external T/H amplifier. Typical applications include process-control and industrial data-acquisition front ends, portable instrumentation and digital panel meters, embedded sensor signal chains in factory automation, and any battery-powered system requiring 12-bit precision with single-supply operation. The MAX167's parallel interface simplifies connection to 8-bit microcontrollers and DSPs without requiring an external address latch. When designing with this device, ensure that VDD decoupling uses a 0.1uF ceramic capacitor placed within 5mm of the supply pin and that the REF pin is bypassed with at least 4.7uF of low-ESR capacitance. The die-form factor requires custom packaging or wire-bond integration; consider the MAX1296/MAX1297 SO-24 packaged equivalents for new surface-mount designs per the manufacturer recommendation. This page synthesizes distributor pricing, drop-in compatible alternatives, and design notes beyond the manufacturer datasheet, including last-time-buy sourcing guidance and pinout for the bare-die variant.
MAX170CCPA - 12-Bit 125kSPS Serial ADC w/ Reference | Maxim
The Analog Devices (formerly Maxim Integrated) MAX170CCPA is a 12-bit, 125 kSPS successive-approximation analog-to-digital converter with an integrated 2.5 V buried-zener reference, packaged in an 8-pin PDIP. It combines high conversion speed (5.6 us conversion time) with a low-power serial interface, drawing approximately 1.5 mA from a single +5 V supply. An ADC (Analog-to-Digital Converter) is a semiconductor device that converts a continuous analog input voltage into a discrete digital code proportional to the magnitude of the input. Successive-approximation ADCs like the MAX170 use a binary-search algorithm through an internal DAC and comparator, balancing speed, resolution, and die cost. They sit in the broader taxonomy of data-converter ICs (sub-family: SAR ADC), which themselves belong to the data acquisition and signal-chain semiconductor category. Internal voltage references simplify design by eliminating the need for an external precision reference. Key features include 5.6 us conversion time, 125 kSPS throughput, an on-chip 2.5 V reference (15 ppm/C typ drift), ±0.5 LSB integral nonlinearity (INL), and SPI/QSPI/MICROWIRE-compatible serial output. The MAX170 also supports an external reference input when higher accuracy or ratiometric measurements are required. Power-down mode reduces supply current to under 10 uA between conversions, ideal for battery-powered or low-duty-cycle instrumentation. Architecturally, the MAX170 uses a charge-redistribution DAC array combined with a high-speed comparator and successive-approximation register (SAR). The buried-zener reference provides low noise and excellent long-term stability, while the CMOS process keeps power consumption low without sacrificing dynamic performance. The serial interface minimizes pin count, making the device suitable for space-constrained designs. Typical applications include portable data loggers, pen-tablet digitizers, battery-powered instrumentation, process-control isolated front ends, and isolated 4-20 mA loop sensing. The internal reference and high throughput also suit point-of-load monitoring in industrial PLC modules. When designing with the MAX170CCPA, provide 10 uF (tantalum) + 0.1 uF (ceramic) decoupling on VDD and ensure the REF pin is bypassed with a 4.7 uF capacitor to minimize reference noise. The serial clock can idle high or low; verify timing against your MCU's SPI mode configuration. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
MAX170CEWE - 12-Bit 5.6µs Serial ADC | Maxim Integrated
The Maxim Integrated (Analog Devices) MAX170CEWE is a complete CMOS 12-bit analog-to-digital converter that combines high speed, accurate performance, and a cost-saving serial interface in a 16-pin wide-body SO (SOIC-16) package. It delivers a 5.6 µs successive-approximation conversion time, an on-chip buried-zener reference, and a serial data output that simplifies board routing. Operating from a single +5 V supply (5.25 V maximum), the MAX170CEWE is rated for the commercial 0°C to +70°C temperature range and is targeted at precision data-acquisition front ends. An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that transforms a continuous analog input voltage into a discrete digital code, and successive-approximation ADCs are the most common architecture for 12-bit precision at medium speeds. A SAR ADC uses an internal DAC and comparator to binary-search the input voltage one bit at a time, so conversion time is dominated by the clocked bit trials. Within the broader component taxonomy, the MAX170 belongs to the data-converter family (ADC/DAC) of signal-conditioning ICs, sitting between analog sensors or front-end amplifiers and a microcontroller's serial port. Key features include ±½ LSB (max) integral linearity (12-bit, no-missing-codes), an internal 2.5 V buried-zener reference with low 50 ppm/°C typical drift, true-differential analog inputs, and a shutdown mode that reduces supply current to 1 µA (typ) for battery-backed designs. The serial interface is SPI/QSPI/MICROWIRE-compatible, requiring only three digital lines from the host microcontroller. The 16-pin wide-body SO package provides a generous ground/power pad layout that simplifies analog/digital plane management on the PCB. The MAX170's CMOS successive-approximation architecture pairs a high-speed DAC with a precision comparator in a feedback loop. Track-and-hold is implemented on-chip, so the input does not require an external buffer for signals below the converter's full-power bandwidth. The internal buried-zener reference (rather than a bandgap) was chosen for its low wideband noise, which directly sets the converter's SNR floor at roughly 72 dB for a 5 V input. Typical applications include multi-channel data-acquisition boards, portable instrumentation, process-control analog input modules, and digital audio front-end biasing. Pair the MAX170 with a low-offset op-amp input buffer such as the MAX430 or OP-27, supply it from a clean 5 V rail, and read conversions through any microcontroller serial peripheral. When designing with the MAX170CEWE, observe the analog/digital grounding practice: use a star ground tied at the AGND pin and keep the 10 µF / 0.1 µF bypass pair within a few millimeters of the supply pin. Avoid driving the analog input near the rails; the device loses linearity for inputs less than about 50 mV from VDD or GND due to headroom requirements on the comparator and input switches. This page synthesizes distributor stock and pricing snapshots, identical-footprint drop-in alternatives drawn from Maxim's own MAX170 family, design notes not found in the manufacturer datasheet, and a parameter-by-parameter comparison table built to assist sourcing and second-source decisions.
MAX170DCWE+TG55 - 12-Bit SAR ADC, Serial, 16-SOIC | Maxim
The Maxim Integrated (Analog Devices) MAX170DCWE+TG55 is a complete CMOS 12-bit analog-to-digital converter (ADC) that combines high speed and accurate performance with a cost- and space-saving serial interface, packaged in a 16-lead wide-body SO (SOIC-16W). It uses a successive-approximation register (SAR) architecture with on-chip track/hold and serial interface, delivering a 5.6 us conversion time for single-channel single-supply operation from a 0 to 5 V analog input range. The "TG55" suffix denotes a tape-and-reel packaging variant of the lead-free commercial-grade MAX170DCWE+ device. Compared with parallel-output ADCs, the serial data stream reduces pin count and PCB routing complexity for the same 12-bit resolution, which is critical for cost-sensitive board designs where 16-pin SOIC dominates over 20- or 24-pin alternatives. What is a successive-approximation ADC (SAR ADC)? A SAR ADC is a sampling data converter that uses a comparator and a binary-weighted capacitor DAC network to resolve an analog input one bit per clock cycle against a precision reference. In the broader hierarchy, the MAX170 sits at: ADC -> data converter -> signal-chain IC -> semiconductor. SAR ADCs are favored for high-accuracy mid-speed (ksps-to-low-Msps) applications where low latency, deterministic throughput, and excellent DC accuracy are required - qualities that sigma-delta ADCs and pipeline ADCs trade off for higher resolution or higher sample rates respectively. Key features of the MAX170DCWE+TG55 include a maximum sampling rate of 125 ksps, internal 4.096 V reference option, single +5 V analog supply operation, and a serial interface compatible with SPI, QSPI, and MICROWIRE peripherals. The device integrates an input track/hold amplifier, an on-chip clock, and an auto-calibration cycle on power-up, eliminating the need for external trimming. Its commercial-grade temperature rating of 0C to +70C makes it suitable for instrumentation, factory automation, and data-acquisition (DAQ) front-ends. The MAX170DCWE+TG55 architecture uses an iterative charge-redistribution CDAC switched by CMOS logic. The 12-bit core uses thin-film polysilicon resistors trimmed at wafer-level, achieving 1 LSB maximum INL and DNL after calibration. The serial output stage shifts the conversion result MSB-first in 16 clocks through the DOUT pin, with /CS and SCLK controlling the handshake, allowing direct connection to microcontrollers such as 80C51, PIC, and ARM Cortex cores. Typical applications include portable data logging, process control analog input modules, multi-channel data-acquisition boards, weigh scales, and isolated industrial sensor interfaces where the small SO-16W footprint and serial interface minimize isolated-channel count. In portable instrumentation it enables single 5 V battery-powered conversion; in factory automation it provides deterministic latency for closed-loop PID control. A key design consideration is the MAX170's heavy reliance on a clean +5 V analog supply. Because the internal reference and CDAC ladder are supply-derivatives, PSRR of the upstream LDO (e.g. 60 dB at 1 kHz) directly affects conversion noise. Also, the digital logic ground (DGND) and analog ground (AGND) MUST be kept separate and joined only at the star ground near the regulator, with the SOIC-16W exposed pad tied to AGND for thermal and noise ground symmetry. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes for the MAX170DCWE+TG55, providing information gain that the bare Maxim datasheet does not.
MAX170DEPA - 12-Bit Serial SAR ADC, 8-PDIP | Maxim Integrated
The Maxim Integrated MAX170DEPA is a 12-bit, single-channel, serial-output successive-approximation analog-to-digital converter housed in an 8-pin PDIP through-hole package. The device integrates an internal reference and achieves a 5.6 µs conversion time, supporting a 125 kS/s sampling rate from a single +5 V supply. According to the MAX170 datasheet, the MAX170DEPA is the industrial temperature-grade variant operating from -40 °C to +85 °C. A successive-approximation register (SAR) ADC is a type of analog-to-digital converter that uses a binary search algorithm across an internal capacitive DAC to converge on the input voltage, one bit per clock cycle. SAR converters are favored for applications requiring low latency, deterministic acquisition, and no pipeline delay. Within the converter hierarchy, SAR ADCs sit alongside sigma-delta and pipeline ADCs; they are generally preferred when sample rates of 10 kS/s to a few MS/s are needed and where a compact serial interface reduces board complexity. The MAX170 family uses a high-speed DAC plus comparator core, paired with an on-chip reference, to deliver a complete data-acquisition front end in a single 8-pin IC. Key features include 12-bit resolution with ±0.5 LSB linearity (typical), an internal 5.0 V reference, single-ended analog input, an SPI/QSPI/MICROWIRE-compatible serial interface, and a chip-select input for bus sharing. The 8-pin PDIP package simplifies prototyping on through-hole boards and in legacy industrial systems where SMD footprints are not desired. Power consumption is approximately 4 mW during continuous conversion at full sample rate, dropping to microamp-levels in shutdown. Typical applications include industrial process control, portable data loggers, robotics position sensing, isolated sensor signal chains, and front-end digitizing for 4-20 mA loops. The wide industrial operating range and integrated reference simplify BOM count and calibration routines in field-deployed equipment. Designers should observe the input clamp and reference bypass capacitor guidelines in the datasheet, plus adequate analog/digital ground separation on the PCB, to achieve rated 12-bit accuracy without missing codes. This page synthesizes distributor pricing, datasheet pinout, and pin-compatible drop-in alternatives from the MAX170 family to help engineers evaluate the MAX170DEPA against modern SAR ADC replacements.
MAX170DMJA/883B-W - 12-Bit 125ksps SAR ADC, Military | Analog Devices
The Analog Devices MAX170DMJA/883B-W is a complete CMOS 12-bit successive-approximation analog-to-digital converter (SAR ADC) with on-chip reference and serial interface, housed in an 8-pin CERDIP through-hole package and qualified to MIL-STD-883 military screening. It delivers 125 ksps throughput with a 5.6 µs conversion time from a single +5 V analog supply, integrating the reference, comparator, and serial logic that would otherwise require a multi-chip solution. Key specifications include 12-bit resolution with ±½ LSB linearity, an internal 5.0 V bandgap reference, and a high-impedance analog input that accepts 0 V to 5 V unipolar signals. The serial interface is microprocessor-compatible, with an active-low CS and an external serial clock, making the part drop-in friendly with 8051, PIC, and DSP serial peripherals. Operating temperature spans the military -55°C to +125°C range per the /883B screening level. The MAX170 architecture uses a charge-redistribution switched-capacitor DAC for monotonic conversion, avoiding missing codes and providing excellent DC accuracy across temperature. The internal reference is laser-trimmed, eliminating the external reference resistor pair that older bipolar ADCs required and shrinking the BOM to a single bypass capacitor plus the IC. The /883B suffix indicates full Mil-883 processing: 100% screening, burn-in, and extended temperature testing for high-reliability military and aerospace programs. Typical applications include military avionics data acquisition front-ends, industrial process-control analog input modules, precision sensor signal conditioning, portable instrumentation with serial-output microcontrollers, and legacy replacement of obsolete 12-bit ADC sockets. The wide temperature range also makes it suitable for down-hole oilfield instrumentation and ruggedized field equipment. When designing with the MAX170DMJA/883B-W, observe the standard SAR layout rules: bypass VDD with 10 µF tantalum plus 0.1 µF ceramic close to the supply pin, and tie AGND and DGND to a single low-impedance ground plane. The internal reference needs no external capacitor, but adding 0.1 µF close to the REF pin reduces digital switching noise coupling into the reference cell.
MAX172ACWG - 12-Bit 10us CMOS ADC with Internal Reference | Analog Devices
The Analog Devices / Maxim Integrated MAX172ACWG is a complete 12-bit successive-approximation analog-to-digital converter (ADC) that combines high speed, low power consumption, and an on-chip buried-zener voltage reference. The MAX172ACWG integrates a track/hold, reference, and parallel data interface in a single 24-pin wide-body SOIC package, with a 10us conversion time and 100 ksamples/s throughput. This part is the commercial-temperature, 0C to +70C grade of the MAX172 family. An ADC (analog-to-digital converter) is a data converter IC that samples a continuous analog input voltage and produces a discrete digital code proportional to that voltage. Within the broader semiconductor taxonomy, an ADC sits under data converters -> converter ICs -> signal chain -> mixed-signal semiconductor. The 12-bit resolution provides 4096 discrete codes (LSB weight = VREF / 4096), making this part well-suited to instrumentation, process control, and signal-acquisition front ends that do not require 16- or 24-bit precision but still need reliable 0.024% resolution and low integral non-linearity. Key specifications of the MAX172ACWG include a 10us maximum conversion time, 100 ksamples/s throughput, single +5V supply operation, internal buried-zener reference with low drift, and parallel digital output. The ADC uses a successive-approximation architecture with an on-chip clock, simplifying external circuit design. The internal reference typically provides 10 V (with the ±5V input range option) or 2.5 V alternative reference depending on configuration, and uses a buried-zener structure for low temperature drift and low broadband noise. The MAX172 architecture uses a charge-redistribution DAC array, a comparator, and a successive-approximation register (SAR). The buried-zener reference is laser-trimmed during manufacture for low initial error and provides typical drift under 20 ppm/C. The integrated track/hold handles full-scale input bandwidths beyond what the 10us conversion would otherwise allow, making it suitable for multiplexed multi-channel data-acquisition systems using an external analog mux. Typical applications for the MAX172ACWG include industrial process-control front-ends, portable data loggers, precision instrumentation, automated test equipment, and panel-meter designs. The wide-body 24-pin SOIC footprint also simplifies hand prototyping and rework on legacy through-hole-style PCB layouts where DIP-style ADCs (such as the MAX172ACNG variant) are not desired. When designing with this part, ensure that the analog input signal is buffered with a low-impedance driver to avoid conversion errors caused by input-charge kickback from the internal track/hold. Decouple VDD and VLOGIC with 0.1 uF ceramic capacitors placed within 5 mm of the supply pins, and place the analog input traces away from digital output switching to minimize crosstalk. For multi-channel systems, add an external sample-and-hold or fast analog mux upstream of the MAX172ACWG input. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes not found in the standalone manufacturer datasheet, enabling faster engineering decisions for both new designs and legacy 12-bit ADC redesigns.
MAX172BCNG - 12-Bit 100kSPS CMOS ADC with On-Chip Reference | DIP-24
The Maxim Integrated MAX172BCNG (now part of Analog Devices) is a complete 12-bit successive-approximation analog-to-digital converter (SAR ADC) that combines high-speed conversion, low power consumption, and an integrated buried-zener voltage reference in a single 24-pin PDIP (NG) through-hole package. It delivers 10us conversion time (100 kSPS throughput), single +5V supply operation, and parallel data output for direct microprocessor interfacing. An SAR ADC is a type of analog-to-digital converter that uses a binary search algorithm across an internal capacitive DAC to digitize an analog input in N clock cycles for N-bit resolution. The MAX172 sits in the broader hierarchy of ADC architectures: it is a SAR ADC, which itself is a sub-type of medium-speed, medium-resolution data converter (12 bits, 100 kSPS) sitting between slower integrating ADCs (e.g., dual-slope) and faster flash or pipelined ADCs. SAR ADCs are favored when designers need deterministic latency, zero pipeline delay, and a small external component count - making the MAX172 a typical choice for embedded instrumentation front-ends. Key features include a built-in buried-zener reference for low drift and low noise, ±5V input range (unipolar 0 to 5V or bipolar ±5V via external scaling), three-state outputs for direct bus connection, and an on-chip clock. The buried-zener reference topology provides better long-term stability and lower temperature drift than bandgap references common in CMOS ADCs of this era, which directly improves absolute-accuracy and gain-drift performance across -40C to +85C commercial operating temperatures. Typical applications include process control, data acquisition boards, panel meters, weigh scales, digital signal processor front-ends, and any 12-bit measurement channel where simple parallel-readback from a microcontroller or FPGA is preferred over a serial interface. When designing with this part, note that 12-bit absolute accuracy requires careful analog front-end design (input amplifier settling, charge-kickback filtering) and that the through-hole PDIP package is preferred for hand-soldered prototypes and industrial control modules rather than high-density SMT boards.
MAX172BEWG - 12-Bit 100kSPS CMOS ADC | Maxim Integrated
The Maxim Integrated MAX172BEWG is a complete 12-bit analog-to-digital converter (ADC) that combines 10 microsecond conversion time, low power consumption, and an on-chip buried-zener voltage reference in a 24-pin wide-body SOIC package. The device uses a successive-approximation register (SAR) architecture with on-chip track-and-hold and operates from a single +5V analog supply with a separate digital supply pin for low digital-noise coupling. The MAX172BEWG is specified for the extended-industrial -40C to +85C temperature range (denoted by the 'E' suffix) and uses the Maxim 24-SOIC wide-body 0.295-inch land pattern. An ADC is a mixed-signal integrated circuit that converts a continuous analog input voltage into a discrete N-bit binary code suitable for digital processing. In the hierarchy of data-converter ICs, the MAX172 sits inside the SAR ADC family, which itself is a sub-category of Nyquist-rate ADCs, distinct from sigma-delta (oversampling) and pipelined converters. SAR ADCs are valued for deterministic latency, single-cycle conversions, and excellent DC-accuracy at moderate sample rates, making them the workhorse for data-acquisition front-ends and instrumentation. Key features of the MAX172BEWG include 12-bit resolution with no missing codes, +/-0.5 LSB integral nonlinearity (typical), a +5V single supply with separate V+ and VDIG inputs, parallel microprocessor interface (8+4 multiplexed or straight binary), and a buried-zener reference that provides low drift and low noise. The ADC also provides a +2.5V or +5V reference output drive capability for ratiometric or absolute conversions, and a hardware Read strobe plus mode-locked BUSY/INT line for interrupt-driven microcontrollers. Architecturally, the device integrates a precision CMOS comparator, a switched-capacitor DAC based on a thin-film ladder, a buried-zener reference, a sample-and-hold stage, and digital timing/control logic. The buried zener (rather than a bandgap) yields the reference noise and drift performance needed for 12-bit absolute accuracy and supports a long-term drift of typically less than 30 ppm per 1000 hours. Typical applications include high-speed data-acquisition boards, digital panel meters, process-control analog inputs, instrumentation transducer read-out, and remote sensor analog front-ends. Industrial PLC analog input modules and laboratory bench instruments commonly use this converter because the 24-SOIC wide package is still acceptable in through-hole-style front ends and the part is fully specified over the industrial temperature window. For best accuracy, decouple V+ and VDIG at the IC pins with separate 0.1 microfarad ceramic capacitors in parallel with 10 microfarad tantalum or aluminum-polymer bypass capacitors, and short the analog and digital grounds at the AGND-to-DGND pin only. The internal reference drives up to 5 mA but is sensitive to capacitive loads - keep the REF pin bypassed with a 4.7 microfarad to 22 microfarad low-ESR tantalum or ceramic capacitor. This page synthesizes distributor pricing, pinout-accurate SOIC-24 alternatives, and practical design notes that complement the manufacturer datasheet rather than restating its tables.
MAX172BMRG/883B - 12-Bit 100ksps SAR ADC, 883B Military | Maxim
The Maxim Integrated (now part of Analog Devices) MAX172BMRG/883B is a 12-bit, 100 ksps successive-approximation analog-to-digital converter (ADC) housed in a 24-pin CERDIP-24 (RG) through-hole package, qualified to MIL-STD-883B for military and aerospace applications. Its three headline parameters are 12 bits of resolution, 100 ksps sampling rate, and a 0V to 5V unipolar analog input range, all delivered with low-power CMOS operation and a microprocessor-compatible parallel interface. An ADC (analog-to-digital converter) is a data-acquisition IC that samples a continuous analog voltage and converts it into a discrete digital code for processing by a microcontroller, DSP, or FPGA. Successive-approximation (SAR) ADCs, the architecture used in the MAX172 family, use a binary-search algorithm driven by an internal DAC and comparator to resolve one bit per clock cycle, achieving the best balance of speed, resolution, and power for instrumentation-grade measurement. Within the converter hierarchy, the MAX172 sits under SAR -> ADC -> data converter -> mixed-signal IC -> semiconductor. Key features include 12-bit resolution with no missing codes, 100 ksps throughput, a standard microprocessor bus interface with three-state outputs controlled by RD and CS, 90 ns data-access and 75 ns bus-release times for wait-state-free CPU read cycles, and a complete on-chip track/hold and clock. The 883B MIL-STD screening guarantees operation across the full -55C to +125C military temperature range, with hermetic CERDIP packaging for high-reliability environments. The MAX172 uses a ratiometric successive-approximation architecture with an internal buried-zap reference ladder and self-calibrating comparator, achieving guaranteed 12-bit linearity over temperature. It accepts a 0V to 5V unipolar analog input scaled to the +5V analog supply, and the parallel data bus simplifies interface to 8-bit and 16-bit microprocessors without external glue logic. Typical applications include military and aerospace data acquisition systems, process-control instrumentation, portable battery-powered measurement, and industrial sensor signal conditioning. In each case, the combination of low power, fast bus access times, and 883B screening makes the part well-suited to harsh-environment or long-life programs. When designing with this ADC, the analog input impedance and source-impedance drive requirements must be respected: the MAX172 requires a low-source-impedance (under a few hundred ohms) input buffer or low-pass RC, and the +5V AVdd must be properly decoupled to minimize conversion noise. Designers should also evaluate using the surface-mount / industrial-grade MAX172 family members for cost-sensitive designs not requiring MIL-STD-883B screening. This page synthesizes distributor pricing, MIL-STD drop-in alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers evaluate the MAX172BMRG/883B for next-generation military data-acquisition designs.
MAX173CWG - 10-Bit SAR ADC with Reference | 24-SOIC | Maxim
The Maxim Integrated MAX173CWG is a 10-bit, single-input, successive-approximation analog-to-digital converter (SAR ADC) with an internal reference, housed in a 24-pin wide-body SOIC package. It accepts a unipolar analog input and produces a parallel digital output, with on-chip sample-and-hold and reference buffer supporting single-supply operation in the commercial temperature range. A SAR ADC (successive-approximation register analog-to-digital converter) is a type of data converter that converts an analog input signal into a digital code by iteratively comparing the sampled input against an internal DAC. It belongs to the broader data-converter hierarchy: ADC -> data converter -> data acquisition IC -> signal chain -> mixed-signal semiconductor. SAR ADCs offer deterministic latency (one conversion per N clock cycles), low power consumption, and high accuracy at moderate sample rates, making them preferred for multiplexed channel monitoring, sensor readout, and instrumentation front ends. The MAX173 is offered in commercial and extended-temperature grades, supports TTL/CMOS-compatible parallel outputs, and includes an internal reference that eliminates external precision-reference components, simplifying the BOM in panel-meter, pen-tracer, and process-control designs. It uses a ratiometric conversion principle that allows the reading to track any reference or supply voltage applied externally for absolute measurements. Key features include 10-bit resolution, on-chip track/hold amplifier, internal reference, single +5V (or dual ±5V) supply operation, and an easy parallel interface to microcontrollers or logic arrays. The wide 24-pin SOIC footprint provides ample pin spacing for hand-assembly and inspection in legacy industrial designs. Typical applications include panel meters and digital voltmeters, process-control analog front ends, pen plotters and chart recorders, industrial sensor readouts, and computer-peripheral analog interfaces. The combination of internal reference and parallel interface supports legacy 5V microcontroller systems where a compact ADC with deterministic conversion time is required. When designing with the MAX173, ensure clock-frequency selection matches the converter's acquisition time. The internal reference requires adequate bypass capacitance on the REF pin to reject logic-noise coupling; in ratiometric mode the reference voltage and the sensor excitation share the same supply to cancel drift. This page synthesizes distributor pricing, drop-in alternatives sourced from manufacturer parametric databases, and practical design notes for the MAX173CWG that are not consolidated in the Maxim datasheet.
MAX174ACWI - 12-Bit 125ksps SAR ADC, 28-SOIC | Maxim Integrated
The Maxim Integrated MAX174ACWI is a complete 12-bit successive-approximation analog-to-digital converter (SAR ADC) in a 28-pin wide-body SOIC package, providing a maximum conversion time of 8 microseconds (125 ksps) and an integrated buried-Zener voltage reference. This part belongs to the industry-standard MAX174/MX574A/MX674A ADC family, where the MAX174 is the highest-speed variant and the MX574A the lowest-power. It combines the ADC core, on-chip clock, voltage reference, and digital I/O on a single monolithic die, eliminating the need for external reference and timing components in most precision instrumentation designs. A successive-approximation ADC (SAR ADC) is a type of Nyquist-rate data converter that resolves an analog input to N bits by performing a binary search through an internal capacitive DAC, comparing the result against the input on each clock cycle. Within the broader hierarchy, the MAX174 belongs to the precision SAR ADC segment of the data-converter market, which sits under the analog-to-digital converter (ADC) family, itself a sub-category of data acquisition and signal-chain ICs. SAR ADCs deliver a single conversion on demand rather than continuously oversampling, giving them deterministic latency and no pipeline delay, which is why they remain the preferred architecture for multiplexed data acquisition, industrial process control, and precision instrumentation front-ends. Key features include 12-bit resolution with no missing codes, an integrated 10.000 V buried-Zener reference (the source of the part's '+10V Precision ADC' moniker), a bipolar input range of ±5 V or ±10 V on a single +5 V supply, and three-state digital outputs that interface directly to 8-bit and 16-bit microprocessors. The -AC suffix designates the commercial 0 °C to +70 °C operating-temperature grade, while the -AE part offers the -40 °C to +85 °C extended grade in the same SOIC-28 outline. Power consumption is typically around 100 mW during conversion. The MAX174 uses a capacitive-charge-redistribution DAC with a thin-film attenuator ladder at the input, which is why it achieves both high speed (8 µs max conversion) and 12-bit linearity without the laser-trimming required by older bipolar SAR architectures. The internal reference and clock remove two common external components, shrinking the BOM and improving long-term gain stability. Typical applications include process-control front-ends, instrumentation digitizers, PC-based data-acquisition boards, and test-and-measurement equipment. The integrated reference and three-state bus interface also make it well suited to legacy retrofit designs where a discrete-component ADC has been replaced by this single-chip solution. Industrial PLC analog input modules and medical-instrumentation signal paths are common use cases. When designing with this part, ensure that the input signal source can drive the 4 kΩ analog input impedance without introducing significant gain error, and that bypass capacitors are placed within 1 cm of the supply pins. The wide SOIC-28 footprint provides adequate thermal margin at the typical 100 mW dissipation, but reflow profile should respect the JEDEC J-STD-020 MSL rating for the commercial -AC temperature grade. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes that are not collected in the manufacturer datasheet alone, helping engineers evaluate the MAX174ACWI quickly for new designs or EOL retrofits.
MAX174AEPI - 12-Bit 8µs SAR ADC, 28-PDIP | Maxim Integrated
The Maxim Integrated MAX174AEPI is an industry-standard, complete 12-bit successive-approximation analog-to-digital converter (SAR ADC) with a maximum conversion time of 8 microseconds, an internal clock, an internal buried-zener voltage reference, and a parallel microprocessor-compatible interface, all housed in a 28-pin PDIP through-hole package. What is a SAR ADC? A successive-approximation register analog-to-digital converter is a type of ADC that converts an analog input to a digital output by binary-searching through internal weighted capacitors or resistors, one bit per clock cycle. SAR ADCs sit in the broader hierarchy of ADC architectures, between flash converters (faster but lower resolution) and sigma-delta converters (slower but higher resolution), and are widely used in industrial process control, data acquisition, and instrumentation where 10-16 bits at 100 kSPS to 1 MSPS are required. Key features of the MAX174AEPI include a throughput rate compatible with its 8 us conversion time, +/-10V unipolar or +/-5V, 0V to +10V, or +/-5V bipolar analog input ranges, three-state output buffers, and an industry-standard pinout that simplifies design-in to systems originally built around the AD574A/AD674A/AD774A. The Maxim BiCMOS process reduces power dissipation roughly three times compared to the older AD574A while keeping drop-in compatibility for many legacy designs. Architecturally, the device combines a precision laser-trimmed buried-zener reference, a high-speed successive-approximation register, a charge-redistribution DAC, a clock oscillator, a comparator, and three-state output latches. Internal scaling resistors set the input ranges, and external pins support offset and gain trim for system calibration. The maximum conversion time of 8 us makes it well-suited to multiplexed data-acquisition systems where many channels must be scanned sequentially at moderate rates. Typical applications include industrial process-control front ends, multiplexed data-acquisition systems, digital signal-processing front ends, and test-and-measurement instrumentation. The wide input range options also suit it to motor-control current-sense digitization when paired with a shunt amplifier. Industrial temperature grade (-40C to +85C) makes the 'E' suffix suitable for factory-floor and outdoor equipment. When designing, observe the supply sequencing requirement (digital supply +5V must come up before or simultaneously with the analog +12V/-12V supplies) to avoid latch-up, and place the 100 nF bypass capacitors as close as possible to each supply pin. Because the 'I' suffix designates industrial grade, verify any field-deployed designs against the published temperature specifications. This page synthesizes distributor pricing, same-family drop-in alternatives (MAX174BCPI, MAX174ACWI), and practical design notes not found in the manufacturer datasheet alone.
MAX174AEPI+ - 12-Bit SAR ADC, 28-PDIP, BiCMOS | Maxim Integrated
The Maxim Integrated MAX174AEPI+ is a complete 12-bit analog-to-digital converter (ADC) that combines a successive-approximation register (SAR) architecture, an on-chip clock, a buried-zener voltage reference, and a digital interface in a single 28-pin PDIP through-hole package. The device accepts one analog input channel and provides a parallel word-access output, suiting it to data-acquisition front ends where an external microcontroller or DSP must read conversion results in a single bus cycle. A SAR ADC is a type of analog-to-digital converter that uses a binary-search algorithm implemented with a charge-redistribution DAC to resolve the input voltage against a precision reference, producing one digital code per conversion at low latency. SAR ADCs sit within the broader hierarchy of analog-to-digital converters (ADCs) -> data converters -> mixed-signal ICs -> integrated circuits, and are valued for their deterministic latency, low power, and ease of use compared to delta-sigma or pipeline architectures. Key features of the MAX174AEPI+ include a 12-bit resolution, a single analog input, integrated reference, and Maxim's BiCMOS construction that reduces power dissipation roughly three times compared to all-bipolar predecessors such as the AD574A. The converter is specified for industrial temperature grades and ships in a plastic DIP-28 package with through-hole leads. The MAX174 belongs to Maxim's industry-standard 12-bit ADC family that also includes the MX574A and MX674A variants. All three share the same control-logic footprint and pinout conventions, enabling board-level design reuse when migrating between speed grades or supply-voltage options within the family. The MAX174AEPI+ is the +5 V operation variant of the MAX174 family. Typical applications include industrial process control, instrumentation, data loggers, and any system requiring a low-power, complete 12-bit ADC with a parallel interface. The integrated reference and clock reduce external component count, which is advantageous in legacy designs and replacement scenarios. When designing with this part, ensure the analog input signal is properly buffered and that the +5 V supply is decoupled with a 10 uF tantalum plus 0.1 uF ceramic combination near the device. The internal reference stability is sufficient for 12-bit accuracy but cannot source heavy external loads. This page synthesizes distributor pricing, parametric comparison with same-family Maxim parts, and practical design notes not found in the manufacturer datasheet alone, giving procurement and design engineers a single reference for the MAX174AEPI+.
MAX174BC/D-C10306 - 12-Bit 8μs SAR ADC Die | Maxim Integrated
The Analog Devices / Maxim Integrated MAX174BC/D-C10306 is a complete 12-bit analog-to-digital converter (ADC) supplied as a bare die (wafer / chip form), implementing successive-approximation (SAR) conversion with an 8 μs maximum conversion time and on-chip clock, buried-zener voltage reference, and digital interface logic. The MAX174 family combines the precision of a 12-bit ADC with high throughput and low power consumption, integrating all analog and digital functions onto a single monolithic die. Conversion rates reach up to 125 kSPS at full 12-bit resolution. An ADC (Analog-to-Digital Converter) is a data-acquisition component that converts a continuous analog input voltage into a discrete binary code suitable for digital processing. The SAR (Successive Approximation Register) architecture uses an internal DAC and comparator to resolve one bit per clock cycle, achieving an excellent trade-off between speed, accuracy, and power consumption. Positioned in the broader signal-chain taxonomy, ADCs belong to the data-converter family (ADC/DAC), sit inside the signal-conditioning hierarchy, and ultimately fall under the broader category of mixed-signal semiconductor ICs. Modern SAR ADCs dominate applications in industrial control, instrumentation, and embedded data acquisition. The MAX174 draws only 175 mW from a +5 V and ±12 V or ±15 V analog supply set, supports unipolar or bipolar input ranges (0 V to +10 V, 0 V to +20 V, ±5 V, ±10 V), and provides three-state output latches for direct bus interfacing to 8-, 12-, or 16-bit microprocessors. A precision buried-zener reference delivers ±10 V or 0 V to +10 V output options. The die-level packaging suits designers who require chip-on-board (CoB) or hybrid assembly for space-constrained or ruggedized systems. Typical applications span industrial process-control loops, multi-channel data-acquisition front ends, instrumentation front panels, precision sensor signal conditioning, and medical imaging subsystems. Because the MAX174 integrates clock, reference, and output latches, designers can replace multi-chip ADC solutions with a single die, shrinking BOM count and PCB footprint in harsh-environment or miniaturized assemblies. When designing with the bare-die MAX174BC/D-C10306, pay careful attention to die-handling protocols and ESD safeguards — die-level packaging requires wire bonding or flip-chip attach rather than standard SMT placement. The three-state output bus and MODE pin simplify μP interface design, allowing direct connection to 8-bit data buses without external latches. Pricing references in this page are quoted as of 2026-10-15.