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MAX1840/W - SIM/Smart-Card Level Translator | Analog Devices
MAX1840/W

MAX1840/W - SIM/Smart-Card Level Translator | Analog Devices

The Analog Devices MAX1840/W is a low-voltage SIM/smart-card level translator that provides bidirectional level shifting and ±10 kV ESD protection for SIM and smart-card ports, housed in a 10-pin µMAX package measuring only 1.09 mm high. It operates from a +2.7 V to +5.5 V supply and is compliant with GSM test specifications 11.11 and 11.12. A level translator (also called a level shifter) is a mixed-signal interface IC that converts logic signals between two different voltage domains. Within the semiconductor hierarchy, the MAX1840/W sits under interface ICs, which belong to the broader analog/mixed-signal integrated circuit family. SIM and smart-card interfaces require a dedicated translator because the card operates at 1.8 V, 3 V, or 5 V while the host controller may run at a different rail; the translator must also survive the ESD events that occur when a card is inserted or removed. The MAX1840/W integrates level-shifting circuitry for the SIM clock, reset, and bidirectional data lines, plus ESD protection diodes rated to ±10 kV (Human Body Model) on the card-side pins. Its ultra-small 10-pin µMAX package occupies roughly half the board area of an 8-pin SOIC, which is critical in GSM handsets where PCB real estate is at a premium. The device is specified over the -40 °C to +85 °C extended temperature range. Typical applications include SIM interfaces in GSM cellular telephones, smart-card readers, and SPI/QSPI/MICROWIRE level translation where a compact, ESD-hardened interface is needed. The MAX1840/W is the lead-free (W) variant of the MAX1840 family, making it suitable for RoHS-compliant production. When designing with the MAX1840/W, place the ESD protection close to the card connector and keep the card-side traces short to preserve the ±10 kV rating. The device is a legacy Maxim part now manufactured by Analog Devices; verify lifecycle status and availability before committing to new designs. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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MAX184BC/D - 12-Bit High-Speed ADC w/ External Ref | Maxim Integrated
MAX184BC/D

MAX184BC/D - 12-Bit High-Speed ADC w/ External Ref | Maxim Integrated

The Maxim Integrated MAX184BC/D (now supplied by Analog Devices / Maxim Integrated) is a 12-bit high-speed successive-approximation analog-to-digital converter (ADC) supplied in an un-packaged bare die (DIE) form factor with 24 die terminals. It features an external reference input, industrial-commercial temperature grade, and single +5 V nominal supply with optional -12 V/-15 V supplies for bipolar input ranges. An SAR (Successive Approximation Register) ADC is a type of data converter that performs a binary search through an internal capacitive DAC to produce a digital output in N clock cycles for an N-bit conversion. SAR ADCs sit in the broader hierarchy: ADC -> data converter -> mixed-signal IC -> semiconductor. Unlike flash ADCs, SARs trade speed for power efficiency and DC accuracy, while unlike delta-sigma ADCs, they offer low-latency conversions ideal for multiplexed acquisition. Key features include 12-bit resolution, external reference voltage for ratiometric or absolute measurements, and tracking/hold functionality on the analog front end. The device is well suited for high-accuracy instrumentation with compact PCB area because the bare-die format eliminates package parasitics and reduces footprint versus packaged SOIC or PDIP equivalents. Per the Maxim datasheet, the converter supports standard microprocessor interfaces, simplifying connection to MCUs and DSPs. Architecturally, the MAX184BC/D uses a charge-redistribution DAC array combined with a low-noise comparator and successive-approximation register. The external reference pin allows system designers to scale the analog input range independently of the supply rail, which is essential when digitizing signals from sensors whose full-scale output is far below +5 V. Internal clock-generation logic controls sample timing so that an external trigger is not strictly required. Typical applications include industrial process control data acquisition boards, precision sensor front ends (load cells, pressure transducers), motor control feedback sampling, multi-channel data loggers, and digital oscilloscope front-end digitizers. The wide operating temperature range supports harsh industrial environments including factory automation and motor drive systems. When designing with this part, ensure the reference bypass capacitors are placed close to the REF pin and that the analog input is well buffered; SAR ADCs present a switched-capacitive load at the input and are sensitive to source-impedance induced gain error. Designers should also budget for the bare-die assembly process including die attach, wire bonding, and an appropriate ceramic or metal package. This page synthesizes distributor pricing, packaged alternatives, and practical design notes for the MAX184BC/D not found in the original Maxim datasheet - useful for engineers weighing bare-die vs packaged ADC trade-offs.

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MAX186ACPP - 12-Bit 8-Ch 133kHz Serial ADC | Maxim/Analog Devices
MAX186ACPP

MAX186ACPP - 12-Bit 8-Ch 133kHz Serial ADC | Maxim/Analog Devices

The Maxim Integrated MAX186ACPP is a low-power, 8-channel, 12-bit serial-output analog-to-digital converter (ADC) housed in a 20-pin PDIP (through-hole) package. It integrates an 8-channel analog multiplexer, a wide-bandwidth track-and-hold amplifier, a successive-approximation ADC, an internal 4.096 V reference, and an SPI/QSPI/MICROWIRE-compatible serial interface. The device operates from a single +5 V supply (or ±5 V analog input range) and supports up to 133 kHz sampling rate with internal 4.096 V reference (MAX186) or external reference option (MAX188). A Data Acquisition System (DAS) is an integrated analog front-end that combines multiplexing, sample-and-hold, and ADC functionality in a single chip, eliminating the need for external analog signal conditioning. DAS devices sit at the analog boundary of mixed-signal systems, feeding the host microcontroller's digital domain. The MAX186ACPP belongs to the successive-approximation-register (SAR) ADC family - the workhorse architecture for multiplexed multi-channel data acquisition in industrial, instrumentation, and process-control applications. Key differentiating specifications include: 133 kHz maximum sampling rate, 1.5 mA operating supply current, 2 µA power-down current, internal 4.096 V reference, 8 single-ended or 4 differential input channels, and ±5 V true bipolar analog input range. The serial interface reduces pin count and simplifies isolated or distributed data acquisition layouts, while the 12-bit resolution delivers 1 LSB = 1 mV at the 4.096 V full-scale reference. The MAX186 uses a capacitive charge-redistribution SAR architecture with an on-chip calibration logic that corrects internal capacitor mismatch each conversion. The internal reference can be overridden by an external reference voltage applied to the REF pin, enabling ratiometric measurements where the excitation source doubles as the reference. The SHDN pin reduces quiescent current to 2 µA for battery-powered portable applications. Typical applications include process control and industrial automation, portable data loggers, battery-powered instrumentation, isolated data acquisition front-ends, panel meters, and multi-sensor embedded systems. The 8-channel mux eliminates external analog switches for typical multi-channel transducer monitoring. When designing with this device, place 0.1 µF bypass capacitors close to the supply pins and a 4.7 µF tantalum capacitor on the REF pin. The serial clock and chip-select traces should be kept short to avoid digital coupling into the analog inputs. For 50/60 Hz noise rejection, use averaging or synchronized sampling at integer multiples of the line frequency. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical PCB layout guidance not found in the manufacturer datasheet alone.

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MAX187BC/D - 12-Bit Serial SAR ADC, +5V, Die Form | Maxim Integrated
MAX187BC/D

MAX187BC/D - 12-Bit Serial SAR ADC, +5V, Die Form | Maxim Integrated

The Maxim Integrated (Analog Devices) MAX187BC/D is a +5V, low-power, 12-bit successive-approximation analog-to-digital converter (ADC) supplied in unpackaged die form (Package Code: DIE, 8 terminals). It accepts a 0V to 5V analog input, integrates an internal track/hold with 1.5 us acquisition time, an on-chip clock, an internal 4.096V buffered reference, and a high-speed 3-wire SPI/QSPI/MICROWIRE-compatible serial interface. The /D suffix designates bare-die delivery, intended for hybrid/MCM integration rather than conventional PCB soldering. A successive-approximation register (SAR) ADC is a converter architecture that performs a binary search against the analog input using an internal DAC and comparator, producing one bit per clock cycle. SAR ADCs are favored for medium-speed (kHz to low-MHz), low-latency, deterministic conversion because there is no pipeline delay - the result is valid exactly N+1 clock cycles after the CONVST edge. In the broader data-converter hierarchy, SAR ADCs sit between flash converters (fastest, highest power) and sigma-delta converters (highest resolution, lowest bandwidth); the MAX187BC/D targets instrumentation and process-control bandwidths. Key specifications include 12-bit resolution, 75 kHz sampling rate, +/-1/2 LSB integral nonlinearity (A-grade), 1.5 mA operating supply current, 2 uA shutdown current, and 7.5 mW typical power dissipation. The internal 4.096V buffered reference provides a stable, low-impedance reference without an external buffer, simplifying BOM and PCB area. The serial interface runs to SPI/QSPI/MICROWIRE peripherals on microcontrollers and DSPs without glue logic. Architecture-wise, the MAX187BC/D combines a capacitive DAC, a high-bandwidth track/hold, and a precision on-chip reference with factory trimming. The internal clock eliminates the need for an external ADC clock source, and the hardware SHUTDOWN pin reduces quiescent current to microampere levels for battery-powered designs. Typical applications include portable instrumentation, process-control data acquisition, pen-digitizers, battery-powered data loggers, isolated sensor front ends, and precision weighing scales where small PCB footprint and low power matter. The die format suits hybrid microcircuits and chip-on-board modules. Industrial temperature grades (C suffix, 0C to +70C) cover commercial environments. A primary design consideration with die-format parts is packaging and wire-bonding: the MAX187BC/D requires assembly onto a substrate or package with gold or aluminum wire bonds and hermetic/encapsulation protection. For PCB designs, designers typically select the pin-equivalent MAX187BCPA+ (PDIP-8) or MAX187BCWE+ (SOIC-16 wide). Designers should provide adequate input bypass (0.1 uF close to VDD) and a low-impedance analog ground return to preserve 12-bit linearity. This page synthesizes distributor pricing, drop-in package alternatives, and die-level design guidance that goes beyond the manufacturer datasheet. Engineers evaluating MAX187BC/D should treat the bare-die option as a hybrid-assembly component and weigh the BOM savings of internal reference and clock against the assembly complexity.

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MAX187BCPA - 12-Bit 75ksps Serial ADC + 5V | Maxim/ADI
MAX187BCPA

MAX187BCPA - 12-Bit 75ksps Serial ADC + 5V | Maxim/ADI

The Maxim Integrated (Analog Devices) MAX187BCPA is a 12-bit, 75 ksps, low-power, single +5V serial-interface analog-to-digital converter housed in an 8-pin PDIP package. The part combines a successive-approximation register (SAR) ADC core with a fast 1.5 µs track/hold, an internal 4.096 V buffered reference (MAX187 family), an on-chip clock, and a high-speed SPI/QSPI/MICROWIRE-compatible 3-wire serial interface, all in a compact through-hole 8-DIP footprint. A successive-approximation ADC (SAR ADC) is a type of data converter that uses a binary-search algorithm against an internal DAC to determine each digital output code. SAR ADCs are valued for deterministic latency, excellent DC linearity, and low power consumption relative to their throughput, which makes them the dominant choice for multiplexed data-acquisition systems, instrumentation, and process-control front-ends. The MAX187 sits in the product hierarchy of analog-to-digital converter -> data converter -> signal chain IC -> semiconductor. Key specifications include 12-bit resolution with ±½ LSB integral nonlinearity (MAX187A grade) or ±1 LSB (MAX187B/MAX187C grades), 75 kHz throughput, 8.5 µs successive-approximation conversion time, 1.5 µs acquisition time, single +5V operation, 1.5 mA operating current, 2 µA shutdown current, and 7.5 mW typical power dissipation reducing to 10 µW in shutdown. The 8-pin DIP pinout provides VDD, GND, VREF (4.096 V buffered), AIN, SCLK, DOUT, CS, and SHDN functions, all conveniently on a 0.300 inch (7.62 mm) through-hole lead pitch. The MAX187BCPA uses a charge-redistribution SAR architecture with an input track/hold and a laser-trimmed internal reference, achieving AC performance (SINAD and THD) suitable for instrumentation-grade measurements. The MAX187 differs from the pin-compatible MAX189 in that MAX187 integrates a 4.096 V buffered reference while MAX189 requires an external reference, so selection between the two depends on absolute-accuracy vs flexible-reference design priorities. Typical application areas include portable data loggers, industrial process-control analog input modules, weigh scales and strain-gauge digitizers, panel meters, isolated 4-20 mA loop read-back, and battery-powered instrumentation. The 75 ksps throughput and 5V-only operation are well-matched to multiplexing multiple slow analog channels in 12-bit precision systems. When designing with the MAX187BCPA, ensure the input source impedance is below approximately 1 kΩ to avoid ADC droop errors during the 1.5 µs acquisition window, and tie CS high between conversions to keep the device in shutdown and minimize power. A 0.1 µF decoupling capacitor placed within 5 mm of the VDD pin is required, and the internal reference should be bypassed with at least 4.7 µF at VREF to filter reference noise. This page consolidates distributor pricing, parametric drop-in alternatives in the same 8-DIP footprint, and practical design notes from the official Maxim datasheet to help engineers evaluate the MAX187BCPA against modern 12-bit ADC alternatives.

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MAX187BEPA - 12-Bit Serial ADC, +5V, 75ksps | Maxim Integrated
MAX187BEPA

MAX187BEPA - 12-Bit Serial ADC, +5V, 75ksps | Maxim Integrated

The Maxim Integrated MAX187BEPA is a 12-bit, low-power, serial-interface analog-to-digital converter (ADC) operating from a single +5V supply with a 75 kHz (8.5 µs conversion) successive-approximation architecture, housed in an 8-pin PDIP (through-hole) package. An ADC is a mixed-signal integrated circuit that converts a continuous analog voltage into a discrete digital code. The MAX187 sits in the successive-approximation register (SAR) ADC family - which combines a sample-and-hold front end, an internal DAC, and a comparator running a binary-search algorithm - offering a favorable trade-off between speed and accuracy for low-bandwidth instrumentation. As part of the broader data-converter hierarchy, the SAR ADC falls between high-speed flash converters (>100 MSPS) and high-resolution sigma-delta converters (>16 bits), making the MAX187 well suited to industrial control loops, panel meters, and portable data-acquisition front ends where single +5V supply operation simplifies power design. Key features include ±1/2 LSB integral nonlinearity (MAX187A/B grade), 1.5 µs acquisition-time track-and-hold, internal 4.096 V buffered reference (no external reference required), 3-wire SPI/QSPI/MICROWIRE-compatible serial interface, 1.5 mA typical operating current, and a 2 µA power-down shutdown mode. The 8-pin PDIP package (suffix E) supports breadboard-friendly through-hole prototyping and is the standard format for the B-temperature-grade (-40 °C to +85 °C) industrial variant. The MAX187 internal architecture combines an on-chip clock, a sample/hold amplifier, an internal reference buffer, and a digital serial output stage in a single die. Its true-differential analog input stage accepts a 0 V to 5 V unipolar range, while the internal 4.096 V reference and 12-bit resolution yield a 1 mV per LSB step size ideal for transducer digitisation. Typical applications include portable data loggers, industrial process control, isolated front-end signal conditioning with opto-isolated serial interfaces, battery-powered instrumentation, and panel-meter digitiser circuits. Designers select the MAX187 when board area is constrained, an external reference must be avoided, and a 3-wire serial interface to a microcontroller is sufficient. When designing with the MAX187, place the supply bypass capacitor (10 µF electrolytic plus 0.1 µF ceramic) within 5 mm of the VDD pin, keep the analog input traces short and guarded by ground, and observe the 8.5 µs minimum conversion time. The MAX187 differs from the pin-compatible MAX189 only in reference topology: the MAX187 integrates the 4.096 V reference, while the MAX189 requires an external reference. The MAX187 also differs from the MAX187A (tighter linearity) and MAX187C (commercial grade) only in linearity spec and temperature range, all of which share the 8-pin PDIP footprint. This page synthesises distributor pricing, drop-in 8-pin PDIP alternatives drawn from the same Maxim MAX187 family, and practical design notes not found in the manufacturer datasheet alone, providing engineers a single decision-ready resource.

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MAX187BEWE - 12-Bit 75ksps +5V Serial ADC | Maxim Integrated
MAX187BEWE

MAX187BEWE - 12-Bit 75ksps +5V Serial ADC | Maxim Integrated

The Maxim Integrated MAX187BEWE is a +5V, low-power, 12-bit successive-approximation analog-to-digital converter (SAR ADC) with a 75 ksps throughput rate, an internal 4.096 V buffered reference, and a 3-wire SPI/QSPI/MICROWIRE-compatible serial interface, packaged in a 16-pin WSOIC (wide-body SOIC). It accepts a 0V to 5V analog input range, integrates a 1.5 us track-and-hold, and draws only 1.5 mA operating current with a 2 uA shutdown mode for battery-friendly designs. A SAR ADC is a successive-approximation-register analog-to-digital converter that resolves one bit per clock cycle using a comparator, a DAC, and a binary-search register, trading conversion speed for excellent static accuracy and very low power consumption. In a typical signal chain, the SAR ADC sits between the analog front end (sensor + signal conditioning) and the digital controller (microcontroller, FPGA, DSP), translating real-world analog signals into 12-bit digital codes that downstream firmware can process. The MAX187's wide-SOIC pinout, internal reference, and serial interface made it a workhorse ADC of the 1990s and 2000s for industrial, instrumentation, and data-acquisition designs. Key differentiating features include 12-bit resolution with ±1/2 LSB integral nonlinearity (INL) on the B-grade, internal 4.096 V reference (MAX187 only; MAX189 requires external reference), single +5V supply operation, hardware- or software-controlled shutdown, and a high-speed 3-wire serial interface that simplifies opto-isolation in noisy industrial environments. Compared to the older MAX176/MAX186 family, the MAX187 reduces operating current and adds an internal reference, simplifying BOM cost. Typical applications include portable data loggers, battery-powered instrumentation, isolated sensor front ends using SPI over optocouplers, process-control analog I/O modules, panel meters, and pen/strain-gauge digitizers. The 75 ksps rate covers most 4-20 mA loop, RTD, thermocouple, and general-purpose instrumentation sampling needs while the 2 uA shutdown extends battery life in handheld meters. A critical design consideration is bypassing: place a 0.1 uF ceramic capacitor close to VDD and a 4.7 uF tantalum/ceramic at REF, plus a 0.01 uF ceramic at the analog input pin to minimize conversion noise. The serial interface supports SPI modes CPOL=0/CPHA=0 and CPOL=1/CPHA=1, but the MAX187 requires a minimum SCLK period of 130 ns (max 7.6 MHz external clock) when using an external serial clock. This page synthesizes distributor pricing, same-brand and cross-brand drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single source for parametric comparison and PCB-compatible substitution.

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MAX187CCWE - 12-Bit 75kSPS Serial ADC | Maxim Integrated
MAX187CCWE

MAX187CCWE - 12-Bit 75kSPS Serial ADC | Maxim Integrated

The Maxim Integrated MAX187CCWE is a +5V, low-power, 12-bit serial successive-approximation analog-to-digital converter (SAR ADC) in a 16-pin SOIC wide package. It integrates an 8.5 us SAR core, a 1.5 us track/hold amplifier, an on-chip clock, and a high-speed 3-wire serial interface, accepting a single-ended 0V to 5V analog input. An SAR ADC is a type of analog-to-digital converter that uses a binary-search successive-approximation algorithm against an internal DAC to digitize an analog input one bit per clock cycle. SAR ADCs sit in the broader hierarchy of precision data converters -> ADCs -> successive-approximation ADCs -> integrated-circuit semiconductor. Compared with integrating or delta-sigma ADCs, SAR ADCs deliver the best combination of speed and accuracy for multiplexed or single-channel industrial sampling up to a few hundred kilosamples per second. Key features of the MAX187CCWE include 75 kSPS sampling rate, internal 4.096V reference, 1.5 us acquisition time, 8.5 us conversion time, low 1.5 mA operating supply current, and hardware- or software-configurable shutdown reducing quiescent current to a few microamps. The internal reference eliminates an external reference IC in many designs, saving board area and BOM cost. The MAX187CCWE uses a charge-redistribution SAR architecture with an internal capacitor DAC and a precision internal bandgap reference. Its high-speed serial interface is compatible with SPI, QSPI, and Microwire, allowing direct connection to most microcontrollers without glue logic. Internal calibration trims linearity, and the device maintains 12-bit performance across the commercial 0C to +70C temperature range. Typical applications include portable data logging, process control, pen digitizers, portable instruments, isolated data acquisition, and remote-sensor signal conditioning. The wide operating supply range and serial interface make it ideal for compact, low-power embedded designs where a microcontroller-based SPI host is already present. When designing with the MAX187CCWE, ensure the analog input does not exceed VDD + 0.3V to avoid latch-up. Place a 0.1 uF bypass capacitor close to the supply pin and keep analog traces short to minimize digital-noise coupling into the high-impedance input. This page synthesizes distributor pricing, drop-in alternatives within the MAX187 family, and practical design notes not found in the manufacturer datasheet alone.

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MAX187CEPA - 12-Bit Serial ADC, +5V, 75ksps, DIP-8 | Maxim
MAX187CEPA

MAX187CEPA - 12-Bit Serial ADC, +5V, 75ksps, DIP-8 | Maxim

The Maxim Integrated (now Analog Devices) MAX187CEPA is a +5V, low-power, 12-bit serial analog-to-digital converter (ADC) housed in an 8-pin PDIP (DIP-8) package. It accepts a 0V to 5V analog input, integrates a successive-approximation ADC with 8.5us conversion time, a 1.5us track/hold, an on-chip clock, and a high-speed 3-wire SPI/QSPI/MICROWIRE-compatible serial interface. An internal 4.096V buffered reference simplifies external circuitry and removes the need for a separate reference IC in most applications. An ADC (analog-to-digital converter) is a mixed-signal data-acquisition component that samples a continuous analog voltage and quantizes it into a discrete digital code. Within the power management and signal-chain hierarchy, ADCs sit downstream of analog signal conditioning (op-amps, filters) and upstream of microcontrollers, DSPs, or FPGAs. The MAX187 family belongs to the successive-approximation register (SAR) ADC category, which trades conversion speed for excellent static accuracy and low power consumption, making it a workhorse for industrial process control, instrumentation, and portable data-logger designs. Key specifications include 12-bit resolution, +/-0.5 LSB integral nonlinearity (INL) for the MAX187A grade, 75kHz (75ksps) sampling rate, 1.5mA operating supply current, and a 2uA shutdown current that lets battery-powered systems gate power between conversions. The MAX187 variant includes the internal 4.096V reference; the pin-compatible MAX189 leaves REF open for an external reference. Internal calibration circuitry holds linearity over the full operating temperature range. Typical applications include portable instrumentation, data loggers, process-control analog front ends, weigh scales, isolated sensor digitizers, and pen-digitizer / tablet digitizing systems. The wide analog input range (0 to 5V) plus internal reference make it a single-chip solution for many industrial 4-20mA loop and thermocouple-amplifier digitizing tasks. When designing with the MAX187CEPA, place 0.1uF decoupling close to VDD and follow the recommended REF bypass (4.7uF) to keep the internal reference quiet. Use the SHDN pin aggressively in battery systems - the 2uA quiescent current drops total system standby power dramatically versus always-on operation. This page synthesizes distributor pricing, pin-compatible drop-in alternatives (MAX187BEPA, MAX187ACPA+, MAX187CCPA+), and practical design notes not consolidated in the manufacturer datasheet, enabling faster engineering decisions.

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MAX187CEWE - 12-Bit 75kSPS Serial ADC, 16-SOIC | Maxim Integrated
MAX187CEWE

MAX187CEWE - 12-Bit 75kSPS Serial ADC, 16-SOIC | Maxim Integrated

The Maxim Integrated MAX187CEWE is a +5V, low-power, 12-bit successive-approximation analog-to-digital converter (SAR ADC) with an on-chip buffered reference, packaged in a 16-pin SOIC (wide-body, "WE") and rated for the extended industrial temperature range (C: -40°C to +85°C). It accepts a single-ended analog input from 0V to +5V and serializes conversion results over an SPI/QSPI/MICROWIRE-compatible interface at throughput up to 75k samples per second. According to the manufacturer datasheet, the part consumes only 7.5 mW during continuous conversion and drops to 10 µW in hardware shutdown, making it appropriate for battery and loop-powered instrumentation where thermal budget and quiescent draw matter. An ADC of this type is a mixed-signal data converter that digitizes a continuously variable analog voltage into a fixed-width binary code; the MAX187CEWE specifically uses a successive-approximation architecture, where an internal DAC and comparator walk through 12 bits one at a time per conversion. Within the converter hierarchy, the MAX187CEWE belongs to the SAR ADC sub-family of precision converters, which in turn sits under the broader ADC/DAC product category and the integrated-circuits family. SAR ADCs are favored when designers need deterministic latency, low latency per sample, good DC linearity, and simple serial interfacing — they are common in industrial process control, instrumentation, sensor read-out, and portable measurement front-ends where the alternative delta-sigma and pipeline architectures either burn more current or carry longer pipeline delays. Key specifications include 12-bit resolution, 75 kSPS maximum sampling rate, an 8.5 µs successive-approximation conversion time, a 1.5 µs acquisition track/hold, and ±1 LSB maximum integral nonlinearity. Power operation is single +5 V supply (specified 4.75 V to 5.25 V) with 1.5 mA operating supply current and 10 µA shutdown current; the internal reference is a low-drift 4.096 V bandgap. The 16-pin SOIC "WE" package gives a 0.300" wide-body outline with a thermal-resistance profile typical of plastic SO. Typical applications span 4–20 mA loop-powered sensor transmitters, pen-tablet/stylus digitizers, portable data loggers, isolated analog-input modules, and front-end digitizers for microcontrollers that lack on-board ADCs of adequate precision. For each, the MAX187CEWE's 5 V single-supply operation, internal reference and tight INL simplify the analog front end by eliminating external reference and negative-rail circuitry. When designing with this converter, follow the recommended supply decoupling scheme (4.7 µF + 0.1 µF) and keep analog/digital grounds star-routed to the MAX187CEWE GND pin to preserve the 12-bit linearity. Where lower supply operation or higher throughput is needed, evaluate the MAX1240 (3 V variant) and MAX189 (external-reference variant) — see the comparison table. This page synthesizes distributor pricing for the bare "CEWE" (no +, non-compliant suffix) variant, drop-in alternatives also sourced from Maxim's own MAX187 family, and practical design notes that are not duplicated verbatim from the manufacturer datasheet.

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MAX188BEPP - 12-Bit 8-Ch 133ksps Serial ADC | Maxim Integrated
MAX188BEPP

MAX188BEPP - 12-Bit 8-Ch 133ksps Serial ADC | Maxim Integrated

The Maxim Integrated MAX188BEPP is a low-power, 8-channel, 133 ksps, serial 12-bit analog-to-digital converter (ADC) with internal track/hold and reference, housed in a 20-pin PDIP package. It features 8 single-ended or 4 differential analog input channels, an internal 4.096 V reference, and an SPI/QSPI/Microwire-compatible serial interface that simplifies connection to most microcontrollers and DSPs. A successive-approximation ADC (SAR ADC) is a type of data converter that converts an analog input signal into a digital code by performing a binary search across an internal precision resistor ladder. SAR ADCs are valued for their deterministic latency, lack of pipeline delay, and excellent DC accuracy, making them the converter of choice for multiplexed data-acquisition front-ends, industrial process control loops, sensor signal chains, and instrumentation. Within the broader semiconductor taxonomy, the MAX188 sits in the data-acquisition IC category, adjacent to DACs, analog front-ends, and precision reference ICs. Key features of the MAX188BEPP include 133 kHz sampling rate, single +5 V or dual ±5 V supply operation, low operating current of 1.5 mA and an ultra-low 2 µA power-down current, ±5 V input range for bipolar signal acquisition, internal track/hold, and 4-wire serial output. The device accepts unipolar or bipolar analog inputs, providing flexible signal-conditioning headroom for transducer bridge circuits, thermocouple amplifiers, and 4-20 mA current-loop receivers. Architecturally, the MAX188 integrates an 8-channel analog multiplexer, a high-bandwidth track/hold, a precision 4.096 V internal reference, a 12-bit successive-approximation ADC core, and an SPI-compatible digital interface on a single die. The internal reference eliminates external reference cost and PC board area while delivering tight full-scale accuracy. The high-bandwidth track/hold captures fast-moving signals, and the 8-channel mux removes the need for external analog switches in multi-sensor systems. Typical applications for the MAX188BEPP include industrial process control, portable data-logging instruments, battery-powered sensor nodes, medical instrumentation front-ends, factory automation I/O modules, and distributed SCADA analog input cards. The 133 ksps throughput is well matched to multiplexing several channels of slowly-varying process signals. When designing with this ADC, place a 0.1 µF bypass capacitor as close as possible to the VDD pin, and provide adequate analog/digital ground separation with a single-point star connection near the IC. The internal reference requires a minimum 4.7 µF bypass capacitor on the REF pin for stable full-scale accuracy; omitting this degrades linearity. This page synthesizes distributor stock levels, drop-in alternatives, and practical design guidance that the bare datasheet does not provide, helping engineers shorten time-to-prototype for their 12-bit data-acquisition front-end.

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MAX189BC/D - 12-Bit SAR ADC, Serial, 75ksps | Maxim Integrated
MAX189BC/D

MAX189BC/D - 12-Bit SAR ADC, Serial, 75ksps | Maxim Integrated

The Maxim Integrated MAX189BC/D is a 12-bit, low-power, serial-output, successive-approximation analog-to-digital converter (SAR ADC) supplied as a bare die (D suffix). It operates from a single +5V supply, accepts a 0V to 5V analog input range, and includes an internal track/hold, an internal 4.096V buffered reference, and a 3-wire SPI/QSPI/MICROWIRE-compatible serial interface. The MAX189BC/D performs conversions in approximately 8.5 microseconds and supports a maximum throughput of 75 kilosamples per second (ksps). A SAR ADC (Successive Approximation Register Analog-to-Digital Converter) is a type of ADC that converts an analog input to a digital output using a binary-search algorithm against an internal DAC. SAR ADCs balance conversion speed, power consumption, and resolution, making them the workhorse of medium-speed data-acquisition applications such as industrial sensors, handheld instruments, and process-control front-ends. In the broader IC taxonomy, an SAR ADC sits under Data Converters -> ADCs -> Medium-Speed ADCs -> Power-Efficient ADCs. Key features of the MAX189BC/D include +/- 1/2 LSB integral nonlinearity (INL), a fast 1.5-microsecond acquisition-time track/hold, an internal 4.096V reference that can also drive external loads, a hardware- or software-controllable shutdown mode that drops supply current to 2 microamps, and 1.5 mA operating current. The serial interface is compatible with SPI, QSPI, and MICROWIRE, easing connection to most modern microcontrollers and DSPs without external glue logic. The MAX189BC/D's architecture uses a capacitive-charge-distribution DAC at its core, with a precision comparator and SAR logic, plus an integrated reference and reference buffer. The "C" speed grade and "B" resolution grade (with +/- 1 LSB INL vs. the A grade +/- 1/2 LSB) make the BC variant an attractive cost-optimized option. The bare-die format allows hybrid-module integrators and MCM (multi-chip-module) designers to minimize parasitic inductance and shrink board area beyond what packaged parts permit. Typical applications include portable data loggers, pen-tablet digitizers, battery-powered instrumentation, isolated sensor read-out stages, and industrial process-control front-ends. The combination of a single +5V supply, low power, and serial output suits distributed measurement nodes and space-constrained designs. When designing with the MAX189BC/D, provide a clean analog ground plane separate from the noisy digital return, bypass VDD with a 0.1 microfarat ceramic close to each die supply bond, and use the SHDN pin for duty-cycling to extend battery life. The internal reference can source up to several hundred microamps; if your design also needs a reference for external ADCs, budget that current draw into the worst-case accuracy calculation. This page synthesizes distributor pricing, pin-compatible alternatives, and practical design notes not found in the manufacturer datasheet.

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MAX189BEPA+ - 12-Bit Serial ADC, +5V, 75kSPS | Maxim Integrated
MAX189BEPA+

MAX189BEPA+ - 12-Bit Serial ADC, +5V, 75kSPS | Maxim Integrated

The Analog Devices (formerly Maxim Integrated) MAX189BEPA+ is a 12-bit, low-power, serial-output successive-approximation analog-to-digital converter (ADC) operating from a single +5V supply, housed in an 8-pin PDIP package. It accepts a 0V to 5V analog input range, includes an internal track/hold with 1.5us acquisition time, and provides a high-speed 3-wire SPI/QSPI/MICROWIRE-compatible serial interface. The device supports a 75 kHz sampling rate with 8.5us conversion time, drawing only 1.5 mA operating current and dropping to 2uA in shutdown mode. A successive-approximation register (SAR) ADC is a type of analog-to-digital converter that uses a binary search algorithm and an internal capacitive DAC to convert each analog sample in a fixed number of clock cycles. SAR ADCs offer deterministic latency, no-pipeline delay, and excellent dynamic performance at moderate sampling rates, making them ideal for multiplexed data acquisition, industrial process control, and instrumentation. The MAX189 belongs to the data converter family within precision analog signal-chain ICs, ranking alongside delta-sigma and pipeline ADCs in the precision measurement hierarchy. Key features include +/-1/2 LSB integral nonlinearity (A-grade), 75 kHz throughput, internal 4.096V buffered reference on the MAX187 (external reference required on the MAX189), and a hardware/software shutdown mode that reduces supply current to 2uA. The external-reference architecture of the MAX189 lets designers connect a precision reference for ratiometric or higher-accuracy applications, while the MAX187 variant provides an internal reference for minimum external parts count. Typical applications include data logging, process control, isolated data acquisition, battery-powered instrumentation, and pen-digitizer digitizing tablets. The wide supply tolerance of 4.75V to 5.25V and -40C to +85C industrial temperature range make it suitable for harsh embedded environments where thermal and supply variation would otherwise degrade accuracy. When designing with the MAX189, place the external reference bypass capacitor (4.7uF minimum) close to the REF pin and keep the analog input traces short and guarded. For best noise performance, use an external reference such as the MAX6141 or MAX6250 with 4.096V output to match the input span. This page synthesizes distributor pricing, verified drop-in alternatives (same-brand MAX187/MAX176 family first, then pin-compatible cross-brand 12-bit SAR ADCs), and practical design notes not consolidated on the manufacturer datasheet.

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MAX190ACWG - 12-Bit 75ksps SAR ADC, SOIC-24 | Analog Devices
MAX190ACWG

MAX190ACWG - 12-Bit 75ksps SAR ADC, SOIC-24 | Analog Devices

The Analog Devices (formerly Maxim Integrated) MAX190ACWG is a low-power, 12-bit sampling analog-to-digital converter (ADC) with internal reference and power-down capability, housed in a 24-pin wide SOIC (WG) package. It delivers up to 75 ksps throughput from a single +5V analog supply, drawing only 3 mA quiescent current during conversion and dropping to 60 µA in software-controlled power-down mode. The device integrates an internal 4.096V bandgap reference, a successive-approximation register (SAR) architecture, and an on-chip sample-and-hold amplifier. An ADC (Analog-to-Digital Converter) is a data-acquisition component that converts continuous analog signals into discrete digital codes. The MAX190 belongs to the SAR (Successive Approximation Register) family of ADCs, which sit in the broader hierarchy: SAR ADC -> data converter -> ADC/DAC -> signal-chain IC -> semiconductor. SAR ADCs offer a strong balance of speed, resolution, and power for multiplexed or single-channel precision measurement in industrial, instrumentation, and process-control systems. Key features of the MAX190ACWG include ±0.5 LSB integral nonlinearity (INL) in the A-grade, internal low-drift reference, software-configurable unipolar (0 to +5V) or bipolar (±5V) analog input range, and a Byte-wide parallel data interface. The device requires an external 2.5 MHz to 5 MHz serial clock, and its 100 ns acquisition time supports full 75 ksps conversion throughput on a single acquisition/conversion cycle. The integrated reference eliminates the need for external precision components, reducing BOM cost and PCB area. Typical applications include data-logging systems, pen digitizers, portable instrumentation, industrial process control, and battery-powered measurement equipment where the 60 µA power-down mode significantly extends battery life. The MAX190ACWG is the commercial temperature grade (0°C to +70°C), while the MAX190AEWG is the extended temperature grade (−40°C to +85°C) for harsher environments. Designers should add a 10 µF bypass capacitor on the analog supply and follow standard ADC layout practices — keep analog and digital ground planes separate and connect them only at a single point near the IC. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, helping engineers evaluate the MAX190ACWG for both new designs and legacy maintenance.

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MAX190BCWG+T - 12-Bit 75ksps SAR ADC w/ Ref | Maxim Integrated
MAX190BCWG+T

MAX190BCWG+T - 12-Bit 75ksps SAR ADC w/ Ref | Maxim Integrated

The Maxim Integrated MAX190BCWG+T is a 12-bit, low-power, successive-approximation analog-to-digital converter (SAR ADC) with an internal 2.5V reference, an on-chip track-and-hold, and a hardware power-down mode, housed in a 24-pin wide-body SOIC package. It supports a 75 ksps sampling rate on a single +5V analog supply (with an optional +5V digital supply) and offers both serial and parallel (8-bit bus) digital interfaces for design flexibility. An SAR ADC is a successive-approximation-register analog-to-digital converter, a category of precision data converter that uses an internal binary-search algorithm and a precision DAC to convert an analog input to a digital code in N clock cycles (N = resolution in bits). SAR ADCs sit in the broader hierarchy of data converters alongside flash, pipelined, sigma-delta, and dual-slope ADCs, and are valued for their excellent DC accuracy, deterministic latency, and low power consumption in multiplexed data-acquisition systems. The MAX190BCWG+T integrates a 2.5V buried-zener reference (typically 50 ppm/°C drift), an analog input track-and-hold rated for signals up to ±VREF, and 8 software-selectable input ranges. Key specifications include ±0.5 LSB (max) integral nonlinearity (B-grade), ±2 LSB (max) gain error, ±2 LSB (max) offset error, and a SINAD of 70 dB. Power consumption is approximately 5 mW active and under 10 µW in shutdown, while the serial interface supports SPI/QSPI/MICROWIRE-compatible mode 0 communication. The device uses a charge-redistribution DAC architecture with a binary-weighted capacitor array and on-chip calibration logic that corrects linearity errors on power-up. The MAX190BCWG+T operates over the commercial 0°C to +70°C range and uses an external reference capacitor (4.7 µF) on the REF pin for noise filtering; a fully internal reference mode is available when the user-supplied reference is bypassed. Typical applications include portable data loggers, battery-powered instrumentation, industrial process control loops, pen-tablet digitizers, and isolated-sensor signal conditioning. Its low active power and sub-10 µW shutdown make it ideal for solar- or battery-powered remote telemetry endpoints where idle current dominates system energy budget. When designing with the MAX190BCWG+T, the 4.7 µF reference capacitor, 10 µF input-coupling RC network, and quiet +5V analog supply layout are critical for achieving datasheet AC performance. For highest accuracy, use the A-grade (MAX190ACWG+) variant; the B-grade (this part) trades linearity for lower cost. The serial-mode pinout simplifies isolated signal chains because only four digital lines cross the isolation barrier. This page synthesizes distributor pricing from DigiKey, Mouser, and Octopart, drop-in and pin-compatible alternatives (MAX190ACWG+, MAX190AEWG+, MAX190BEWG+, etc.), and practical design notes not consolidated in the manufacturer datasheet.

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MAX19192ETI/V+ - 10Msps Dual 8-Bit Ultra-Low-Power ADC | Maxim
MAX19192ETI/V+

MAX19192ETI/V+ - 10Msps Dual 8-Bit Ultra-Low-Power ADC | Maxim

The Maxim Integrated (now Analog Devices) MAX19192ETI/V+ is an ultra-low-power, dual-channel, 8-bit analog-to-digital converter (ADC) capable of 10Msps sampling rate per channel, housed in a 28-pin thin QFN (TQFN) package measuring 5 mm x 5 mm. The device features two fully differential wideband track-and-hold (T/H) front ends with 440 MHz input bandwidth, supporting both fully differential and single-ended input signals. Typical signal-to-noise-plus-distortion (SINAD) is 48.6 dB at a 1 MHz analog input frequency, with spurious-free dynamic range (SFDR) performance suitable for mid-tier communications and instrumentation. An ADC (Analog-to-Digital Converter) is a mixed-signal integrated circuit that samples continuous analog voltage levels and converts them into discrete digital codes. Within the broader semiconductor taxonomy, ADCs belong to the data converter family, which sits under signal chain ICs and ultimately under power management and analog mixed-signal semiconductors. The MAX19192's dual-channel, low-power architecture positions it in the pipeline/flash converter category, optimized for simultaneous sampling of two correlated signals without channel-to-channel skew penalty beyond the T/H aperture. Key features include 10 Msps sampling per channel, dual differential T/H inputs, 48.6 dB SINAD at fIN = 1 MHz, ultra-low power consumption (well below 30 mW total at full speed), and a parallel digital output interface. The 440 MHz T/H bandwidth supports undersampling of IF signals, while the extended industrial -40C to +85C operating temperature range allows deployment in harsh environments without derating. The 28-pin TQFN package provides a compact footprint suitable for portable, space-constrained designs. The MAX19192 architecture combines a flash-style quantization core with high-bandwidth T/H input stages, enabling low-latency conversion with deterministic aperture delay. The differential input structure rejects common-mode noise, which is critical when digitizing small signals in the presence of digital switching noise on the same PCB. Internal reference and clock buffering simplify external BOM. Typical applications include portable ultrasound imaging front ends, low-power communication baseband digitizers, handheld oscilloscope input stages, I/Q demodulator outputs in software-defined radio, dual-antenna diversity receivers, and industrial data acquisition modules where two correlated analog signals must be captured simultaneously. When designing with this device, allocate adequate PCB area for the exposed thermal pad to maintain theta_JA performance, and keep analog and digital ground returns separated until they join at the IC's GND pin to avoid coupling digital switching noise into the analog input path.

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MAX191BC/D - 12-Bit 100ksps SAR ADC w/ Internal Ref | Maxim
MAX191BC/D

MAX191BC/D - 12-Bit 100ksps SAR ADC w/ Internal Ref | Maxim

The Maxim Integrated MAX191BC/D is a monolithic CMOS 12-bit analog-to-digital converter (ADC) featuring differential inputs, on-chip track/hold, internal 4.096V voltage reference, internal or external clock, and parallel or serial microprocessor interface. It delivers a 7.5us conversion time and a 2us acquisition time, guaranteeing a 100ksps sample rate. The MAX191BC/D is supplied as bare die (/D suffix), targeting compact hybrid assemblies and multi-chip modules where the converter is bonded directly inside the package. An SAR (Successive Approximation Register) ADC is a type of data converter that resolves one bit per clock cycle by comparing the sampled input against a precision DAC driven by a binary-weighted register. SAR ADCs combine high accuracy (typically 12-18 bits), zero pipeline latency, and excellent DC input behavior, making them the architecture of choice for multiplexed data acquisition systems, precision instrumentation, and process-control front-ends. Within the broader taxonomy, the SAR sits between flash converters (faster, lower resolution) and delta-sigma converters (slower, higher resolution). Key features of the MAX191BC/D include 12-bit resolution with 1/2 LSB linearity at +/-5V operation, a built-in track/hold, an adjustable internal reference, low power consumption of 3mA in operating mode and 20uA in power-down, and a logic-level PWRDN input. It accepts single +5V or dual +/-5V supplies, allowing ground-referenced bipolar inputs of up to +/-5V. The part uses a SAR core with internal calibration logic for excellent linearity without external trimming. The MAX191 is most commonly used in high-accuracy data-acquisition boards, industrial process control, battery-powered portable instrumentation, and pen-digitizer/sensor signal chains. The wide bipolar input range simplifies signal conditioning when measuring ground-referenced signals. The low 20uA power-down current extends battery life in duty-cycled portable systems, and the die form factor minimizes PCB area. When designing with the MAX191BC/D, observe proper die-handling and ESD procedures because the bare die is exposed. Use a low-impedance analog ground plane and decouple AVDD/DVDD with separate 0.1uF/10uF capacitors placed within 5mm of the bond pads. The internal reference may be overdriven with an external 4.096V source if higher accuracy or lower drift is required. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, helping engineers accelerate their selection and PCB-layout decisions for new designs and MAX191BC/D replacements.

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MAX191BCNG - 12-Bit 100kSPS Sampling ADC, 24-PDIP | Maxim Integrated
MAX191BCNG

MAX191BCNG - 12-Bit 100kSPS Sampling ADC, 24-PDIP | Maxim Integrated

The Analog Devices (formerly Maxim Integrated) MAX191BCNG is a low-power, monolithic CMOS 12-bit analog-to-digital converter (ADC) with differential inputs, built-in track/hold (T/H), an internal voltage reference, and a parallel microprocessor interface. Housed in a 24-pin PDIP (N) package, the part delivers a 7.5 us conversion time, 2 us acquisition time, and a guaranteed 100 kSPS sample rate from a single +5 V (or +/-5 V) supply while drawing only 3 mA in operating mode and 20 uA in power-down. An ADC (analog-to-digital converter) is a data converter that transforms continuous analog voltages into discrete digital codes for processing by microcontrollers, DSPs, or FPGAs. Successive-approximation-register (SAR) ADCs like the MAX191 use a binary-search algorithm to resolve N bits in N clock cycles, making them well-suited for multiplexed data-acquisition systems, instrumentation, and process control where moderate speed and high accuracy are required. Within the broader converter hierarchy, the MAX191 sits between 8/10-bit SAR parts and higher-resolution 14-16-bit SAR or delta-sigma converters, offering a balanced trade-off of speed, accuracy, and power for industrial and instrumentation applications. Key features of the MAX191BCNG include +/-1/2 LSB linearity (B-grade), differential analog inputs, software-configurable unipolar/bipolar input ranges (0 V to +5 V or +/-5 V), an internal 2.5 V bandgap reference with adjustment capability, and a hardware power-down pin that reduces supply current to 20 uA between conversions. The parallel interface is directly compatible with most 8-bit microcontrollers and DSPs without external glue logic, and the internal reference eliminates the cost and board area of an external reference IC. Architecture is a classic charge-redistribution SAR with an auto-calibrated CMOS capacitor DAC and switched-capacitor T/H. The combination of low 3 mA operating current, 20 uA power-down, and 100 kSPS throughput makes the device one of the lowest-power 12-bit, 100 kSPS ADCs of its era, suitable for battery-powered and thermally-constrained designs. The 24-pin PDIP through-hole package simplifies prototyping, repair, and high-voltage bench-instrument front-ends where surface-mount parts are inconvenient. Typical applications include digital signal processing, precision industrial process control, microprocessor-based instrumentation, and portable/battery-powered data loggers where the 20 uA power-down mode extends battery life between conversions. Designers also use the MAX191 in pen-tablet digitizers and pin-compatible upgrades to earlier 12-bit PDIP ADCs. When designing with this part, ensure the analog input common-mode voltage stays within the specified range and place a 0.1 uF ceramic bypass capacitor as close as possible to the +V DD and +V SS pins to suppress digital switching noise. The internal reference should be decoupled with 4.7 uF tantalum plus 0.1 uF ceramic to achieve the datasheet's 1/2 LSB linearity at full 100 kSPS throughput. This page synthesizes distributor pricing, drop-in alternative MPNs sourced from cross-reference databases, and practical design notes that are not aggregated on a single manufacturer or distributor page.

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MAX191BCWG-T - 12-Bit 75ksps Sampling ADC w/ Internal Ref | Maxim
MAX191BCWG-T

MAX191BCWG-T - 12-Bit 75ksps Sampling ADC w/ Internal Ref | Maxim

The Maxim Integrated (Analog Devices / Maxim Integrated) MAX191BCWG-T is a 12-bit, low-power, sampling analog-to-digital converter (ADC) with an internal 4.096V bandgap reference and integrated power-down mode, housed in a 24-pin wide-body SOIC (WSOIC-24) package. It uses a successive-approximation register (SAR) architecture with an input track/hold to deliver up to 75 ksps throughput while consuming only 3 mA in normal operation and dropping to under 10 uA in shutdown. What is an SAR ADC? A successive-approximation-register analog-to-digital converter is a class of medium-speed, medium-resolution data converter that resolves one bit per clock cycle using an internal DAC, comparator, and SAR logic. SAR ADCs sit in the hierarchy: ADC -> data converter -> data acquisition IC -> mixed-signal semiconductor. Unlike delta-sigma ADCs they offer single-cycle conversions and excellent DC accuracy, and unlike flash ADCs they consume far less silicon area, making them ideal for multiplexed industrial and instrumentation channels. Key features of the MAX191BCWG-T include 12-bit resolution with no missing codes, an internal buried-Zener reference trimmed to within ±1.5%, a software-configurable analog input range of 0V to VREF or bipolar ±VREF, a Byte/parallel interface, and a hardware-active-low RD and CS control. The wide-body SOIC-24 package offers easy hand-soldering and straightforward prototype rework while still being surface-mountable for production. The internal reference removes the need for an external reference IC, saving PCB area and BOM cost in space-constrained designs. The MAX191 is built on a BiCMOS process that combines bipolar precision (for the bandgap reference and comparator) with CMOS logic for low-power digital control. This mixed-signal architecture gives the part a true DC accuracy better than ±1 LSB INL and DNL and a SINAD of approximately 70 dB, suitable for instrumentation, process control, and pen-digitizer front ends. Power-down is invoked by a single serial or parallel-mode command and is hardware-assertable through the active-low shutdown pin in the WSOIC package. Typical applications include data-logging front ends, pen-tablet digitizers, process-control analog input modules, portable instrumentation, and battery-powered data-acquisition boards. The combination of internal reference, single +5V supply operation, and low power-down current makes the part especially attractive for hand-held and remote-monitoring equipment. When designing with this part, allocate an input RC network (typically 1 kohm + 100 pF) to limit transients at the analog input, and route the VREF decoupling capacitor (4.7 uF minimum) as close to the REF pin as possible. Verify that the bipolar/unipolar mode jumper is correctly configured before sampling; otherwise conversions will be off-scale. This page synthesizes distributor pricing, obsolete-lifecycle sourcing guidance, same-brand replacements and cross-brand pin-to-pin ADC equivalents not found in the manufacturer datasheet alone.

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MAX191BEWG - 12-Bit 100kSPS SAR ADC, SOIC-24 | Maxim
MAX191BEWG

MAX191BEWG - 12-Bit 100kSPS SAR ADC, SOIC-24 | Maxim

The Maxim Integrated (Analog Devices) MAX191BEWG is a low-power, 12-bit sampling analog-to-digital converter (ADC) featuring differential inputs, an internal 2.5V reference, track-and-hold (T/H), internal/external clock, and a parallel/serial microprocessor interface, all housed in a 24-pin wide SOIC (WSOIC-24 / EWG) package. Operating from a single +5V analog supply with ±5V input range, the part guarantees 100kSPS throughput via 7.5µs conversion plus 2µs acquisition timing, drawing only 3.0 mA active and 1µA in power-down. Built on a monolithic CMOS process, the successive-approximation architecture delivers ±0.5 LSB INL (B-grade) while providing flexible digital interfacing for μP, DSP, or direct data-bus connection. An ADC (analog-to-digital converter) is a data-acquisition IC that converts real-world analog signals into discrete digital codes usable by microcontrollers, DSPs, or FPGAs. The successive-approximation register (SAR) topology is the most common precision topology: it uses an internal comparator and a binary-weighted capacitor DAC to converge on the input voltage in N clock cycles for an N-bit result. SAR ADCs sit at the precision/throughput middle of the ADC family hierarchy, below delta-sigma (highest resolution, lowest speed) and above flash ADCs (fastest, lowest resolution). Key differentiating specifications include ±0.5 LSB integral non-linearity, no missing codes over the full -40°C to +85°C industrial range, and a hardware + software configurable power-down mode that drops supply current to 1µA for battery-aware applications. The internal buried-zener reference eliminates external reference components while maintaining low drift across temperature. Typical applications include data-acquisition front ends, pen digitizers, portable instrumentation, DSP analog input stages, and process-control I/O subsystems. The wide ±5V true bipolar input range (when using a separate -5V supply) or 0 to +5V unipolar range (single +5V supply) lets the part interface directly to industrial ±5V transducers and 4-20mA loops after resistor scaling. When designing with the MAX191BEWG, bypass VDD with a 10µF tantalum plus 0.1µF ceramic at the pin, place AGND and DGND on a single-star ground, and drive SHDN low only after clocks stabilize. For new designs, Analog Devices recommends the MAX129x family as the modern lower-power successor.

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MAX192ACAP - 10-Bit 8-Ch Serial ADC, Low-Power | Maxim
MAX192ACAP

MAX192ACAP - 10-Bit 8-Ch Serial ADC, Low-Power | Maxim

The Maxim Integrated (Analog Devices) MAX192ACAP is a low-power, 8-channel, 10-bit successive-approximation analog-to-digital converter (ADC) with a high-speed serial interface (MICROWIRE/QSPI/SPI-compatible), packaged in a 20-pin SSOP (5.3 mm body, 0.65 mm pitch). It integrates an 8-input analog multiplexer, a high-bandwidth track/hold, on-chip +4.096 V reference, and a serial I/O port, drawing only 1.5 mA (typ) at 133 ksps. What is a successive-approximation ADC (SAR ADC)? A SAR ADC is a type of analog-to-digital converter that uses a binary search algorithm and an internal DAC to step through each bit of the digital output one at a time. SAR ADCs sit in the data-converter hierarchy below sigma-delta and flash converters, combining moderate resolution (8-18 bits typical), low power consumption, and a small footprint. They are the dominant topology for 10-16 bit multi-channel data-acquisition systems that interface to microcontrollers via SPI/MICROWIRE. Key features of the MAX192 include software-configurable unipolar/bipolar input ranges (0-5 V, 0-10 V, ±5 V, ±10 V), hardware- and software-compatible data format with the MAX186/MAX188 family, single +5 V analog supply operation, and a hardware SHDN pin for power management. Internal +4.096 V reference and 8 single-ended or 4 differential analog input channels simplify BOM. The MAX192 uses a capacitive-charge redistribution DAC with an inherent track/hold, eliminating the need for an external sample/hold amplifier. The serial interface operates to 4 MHz (max), allowing full-speed conversions to be clocked in ~7.5 µs. The -40°C to +85°C commercial operating temperature range suits industrial and instrumentation environments. Typical applications include portable data loggers, multi-channel sensor monitoring (4-20 mA loop, thermocouple, RTD), pen-tablet digitizers, battery-powered instrumentation, and process-control front ends. The internal reference and bipolar input ranges also simplify PLC analog input modules. When designing with this device, place the 10 µF input bypass capacitor as close to VDD as possible and route analog/digital grounds in a star pattern. The internal reference requires a 4.7 µF bypass; insufficient capacitance degrades noise and linearity. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that are not consolidated in the manufacturer datasheet alone.

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MAX194BCPE - 14-Bit 85ksps SAR ADC | Maxim Integrated / Analog Devices
MAX194BCPE

MAX194BCPE - 14-Bit 85ksps SAR ADC | Maxim Integrated / Analog Devices

The Maxim Integrated MAX194BCPE is a 14-bit, 85 ksps successive-approximation analog-to-digital converter (ADC) with a 10 microampere shutdown mode, housed in a 16-pin PDIP (PE) through-hole package. It combines a high-speed 85 ksps sampling rate with true 14-bit accuracy (1/2 LSB INL max), 82 dB SINAD at 5 kHz input, and 9.4 microsecond conversion time. Internal calibration circuitry corrects linearity and offset errors to maintain full rated performance over the operating temperature range without external adjustments, and the capacitive-DAC architecture provides a built-in track/hold function. An SAR (Successive Approximation Register) ADC is a class of analog-to-digital converter that uses a comparator, an internal DAC, and a successive-approximation register to convert an analog input into a digital output one bit at a time per clock cycle. SAR ADCs sit in the data-converter IC hierarchy under ADC -> data converter -> signal chain IC -> mixed-signal semiconductor. They are favored over delta-sigma and pipeline ADCs in applications that require low latency, deterministic acquisition time, and small size with no input current integration artifact - making them ideal for multiplexing between channels and for closed-loop control systems. Key features of the MAX194BCPE include 1/2 LSB integral nonlinearity, 9.4 microsecond conversion time, 10 microampere shutdown mode for battery-powered applications, built-in track-and-hold, AC and DC specifications, unipolar (0V to VREF) and bipolar (-VREF to VREF) input range, three-state serial-data output (SPI/QSPI/MICROWIRE compatible), and small 16-pin DIP, SO, and ceramic SB package options. Reference voltage and signal voltage each have dedicated input pins. The MAX194BCPE uses a capacitive-DAC SAR core with auto-calibration of linear and offset errors at power-up. The serial interface allows easy integration into embedded systems; the CS input controls three-state serial output, and EOC can be tied to CONV for continuous full-speed conversions at up to 5 Mbps of SCLK. Pin-for-pin and functional compatibility with the MAX195 16-bit ADC simplifies migration paths when higher resolution is later needed. Typical applications include data-acquisition boards, industrial process-control front-ends, battery-powered instrumentation, portable medical monitors, weigh scales, motor control current loops, and digital instrumentation replacement of legacy 14-bit converters. The 10 microampere shutdown mode is a major advantage in any battery-life-constrained system. When designing with this ADC, ensure that the VREF input is properly bypassed and that the analog input is driven from a low-impedance source for full AC performance at 85 ksps. The two power-supply pins (VDD and VLOGIC) should be decoupled separately to prevent digital-coupling noise from degrading the analog-input SINAD. This page synthesizes distributor pricing tiers, drop-in compatible 14-bit ADC alternatives, and practical PCB design notes not found in the bare datasheet.

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MAX19526EXE+ - 12-Bit 8-Ch 40Msps Ultra-Low-Power ADC | ADI
MAX19526EXE+

MAX19526EXE+ - 12-Bit 8-Ch 40Msps Ultra-Low-Power ADC | ADI

The Analog Devices (formerly Maxim Integrated) MAX19526EXE+ is an ultra-low-power, 8-channel, 12-bit, 40 Msps analog-to-digital converter housed in a 144-ball TFBGA (CTBGA-144) package. It operates from a single 1.8 V analog supply and a separate digital output driver supply, with a typical power dissipation budget optimized for portable multi-channel medical imaging front-ends. The integrated 8 input channels are intended for time-interleaved or simultaneous sampling architectures across phased-array ultrasound receive paths. An analog-to-digital converter (ADC) is a data-conversion integrated circuit that samples continuous analog input signals and converts each sample into a discrete digital code, enabling digital signal processing, storage, and transmission. The MAX19526 belongs to the pipelined ADC family (ADC -> data converter -> data acquisition IC -> signal chain IC -> mixed-signal semiconductor), a hierarchy that places it beneath general-purpose successive-approximation-register (SAR) converters in sampling-rate tier but above audio-bandwidth codecs in channel-density and RF-IF front-end capability. Key features include 12-bit resolution, 40 Msps sampling rate per channel, a serial LVCMOS-compatible digital data interface, low-power operating modes, per-channel sample-and-hold amplifiers, and internal reference options. The serial interface (per the manufacturer product brief) enables compact FPGA/CPLD or ASIC interconnects, simplifying board routing compared to parallel-output ADCs in dense ultrasound probe and industrial instrumentation designs. Architecturally, the MAX19526 uses a pipelined conversion core with digital error correction, allowing a small per-stage redundancy that relaxes comparator accuracy without sacrificing effective number of bits (ENOB). Internal clock-conditioning logic supports ease-of-use synchronization to external timing references, which is critical in beamforming arrays where multiple ADC channels must sample coherently. Typical applications include portable and cart-based ultrasound system receive front-ends, multi-channel patient-monitoring data acquisition boards, industrial non-destructive test (NDT) phased-array instruments, and high-channel-count vibration data recorders. The ultra-low-power profile also makes it a candidate for battery-powered medical diagnostic probes used at the point-of-care. Designers should size the PCB power-plane geometry to keep analog and digital return currents separated, and place the decoupling capacitor network (typically 0.1 uF X7R plus a bulk 10 uF) within 2 mm of each supply pin to limit switching noise coupling into the analog front-end. The TFBGA package demands laser-via or microvia PCB technology; dog-bone fanouts on the inner layers should be checked for coplanarity and via-in-pad plating quality. This page synthesizes distributor pricing, same-family and cross-family alternatives, and practical design notes for the MAX19526EXE+ that are not collocated in the manufacturer datasheet, accelerating part selection, PCB stack-up planning, and supply-chain risk decisions for medical-imaging and multi-channel instrumentation designs.

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MAX19526EXE+T - 12-Bit 8-Ch 40Msps ADC | Analog Devices
MAX19526EXE+T

MAX19526EXE+T - 12-Bit 8-Ch 40Msps ADC | Analog Devices

The Analog Devices (formerly Maxim Integrated) MAX19526EXE+T is an ultra-low-power, 8-channel, 12-bit, 40 Msps analog-to-digital converter (ADC) housed in a 144-ball TFBGA package. It integrates eight simultaneously-sampling input channels, a high-speed serial LVDS output interface, and on-chip calibration, delivering a typical SNR above 70 dBFS at the full 40 Msps conversion rate while consuming roughly 350 mW per device. An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that quantizes a continuous analog input voltage into a discrete digital codeword. The MAX19526 belongs to the pipeline-ADC sub-category of Nyquist-rate data converters, itself a branch of data acquisition ICs in the broader mixed-signal/power management hierarchy. Pipeline ADCs trade slightly higher power for high sample rates and excellent dynamic range, making them the standard architecture for medical imaging, communications baseband, and instrumentation front-ends. Key features include 12-bit resolution, 40 Msps sampling per channel, simultaneous sampling across all 8 channels without an external T/H, integrated input T/H amplifiers with adjustable input range, a low-jitter LVDS serial data interface that reduces pin count on the host board, and per-channel gain and offset calibration. The MAX19526EXE+T is specified over the -40 °C to +85 °C extended industrial temperature range, meeting the requirements of bedside medical imaging equipment and outdoor industrial instrumentation. The device uses a switched-capacitor pipeline core preceded by an input buffer and track-and-hold, followed by a digital error-correction block. An internal reference simplifies the analog supply chain; designers may bypass it to use an external low-noise reference for the highest absolute-accuracy applications. The serial LVDS output reduces board-routing complexity and EMI compared to parallel CMOS ADCs in the same class. Typical applications include multichannel medical ultrasound receivers, phased-array beamforming front-ends, industrial vibration and acoustic analysis, and multi-channel data-acquisition cards for test and measurement. The low power budget allows portable cart-based ultrasound designs to operate from battery packs with active cooling, while the LVDS interface simplifies connection to FPGAs such as Xilinx Spartan-6 or Altera Cyclone IV. When designing with the MAX19526EXE+T, decouple AVDD and DVDD rails separately with 0.1 µF ceramic capacitors placed within 5 mm of each supply pin, and provide a solid ground plane under the TFBGA footprint to control the LVDS return currents. Designers should also confirm that the FPGA clock-data-recovery block can tolerate the inter-channel skew budget the ADC introduces when all eight channels are sampled simultaneously.

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