ADC/DAC
Products (2398)
MAX195BCWE+G002 - 16-Bit 85ksps SAR ADC | Analog Devices
The Analog Devices (formerly Maxim Integrated) MAX195BCWE+G002 is a 16-bit, 85ksps successive-approximation analog-to-digital converter with 10µA shutdown current, supplied in a 16-pin WSOIC (wide SOIC) package. It integrates high speed (85ksps), high accuracy (±0.5 LSB INL B-grade), low power consumption (up to 36 mW active / 10 µA shutdown), and on-chip calibration logic, making it suited to industrial process control, data acquisition, and instrumentation. An SAR (successive-approximation register) ADC is a type of analog-to-digital converter that uses a binary-search algorithm through an internal DAC and comparator to convert an input voltage into a digital code in N clock cycles for N bits of resolution. SAR ADCs sit in the signal chain between analog signal conditioning (amplifiers, filters, muxes) and the digital controller or processor; they offer an attractive balance of speed, resolution, and latency for multiplexed or single-channel acquisition. Key features include: 85ksps throughput, ±0.5 LSB integral non-linearity (B-grade), single +5V analog supply, unipolar/bipolar input ranges (0V to VREF or ±VREF), and a synchronous serial (SPI/QSPI/MICROWIRE-compatible) digital interface. The on-chip calibration cycle corrects linearity and offset errors on power-up or on command, allowing the device to maintain full ±1 LSB TUE0150 total unadjusted error over temperature. Internally, the MAX195 combines a capacitive-charge redistribution DAC, a precision comparator, a SAR register, and a calibration controller with non-volatile trim registers. The architecture achieves true 16-bit performance with no missing codes and a 90 dB SINAD at 1 kHz input. The shutdown mode reduces supply current to a typical 10 µA, supporting portable battery-operated instruments. Typical applications include industrial process control loop digitization, precision weigh scales, portable data loggers, isolated 4-20 mA sensor front-ends, and medical instrumentation signal acquisition. The wide SOIC package also supports hand-soldered prototypes and high-reliability through-assembly manufacturing lines. When designing with the MAX195, decouple AVDD and DVDD with 10 µF + 0.1 µF local ceramics, place the reference bypass within 5 mm of REF, and observe the four-clock conversion sequence when sequencing multiple channels through an external mux. The shutdown pin enables duty-cycled acquisition with sub-millisecond wake-up. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, drawing on the manufacturer datasheet (MAX195 datasheet, Rev. 1) and Octopart distributor data.
MAX195BCWE+TG035 - 16-Bit 85ksps SAR ADC | Analog Devices
The Analog Devices MAX195BCWE+TG035 is a 16-bit, 85 ksps successive-approximation analog-to-digital converter (ADC) featuring internal calibration, low power consumption, and a 10 µA shutdown mode. Housed in a 16-pin wide-body SOIC (WSOIC) package, the device integrates successive-approximation architecture with a serial digital interface, an internal 4.096 V reference option, and a high-speed track/hold front end. The +TG035 suffix indicates a tape-and-reel packaging variant delivered on a 7-inch reel conforming to standard EIA-481 dimensions. An SAR (Successive Approximation Register) ADC is a type of analog-to-digital converter that uses a binary-search algorithm through an internal DAC to determine each code bit, achieving high accuracy and low latency without the pipeline delay of higher-speed flash or pipeline architectures. SAR ADCs occupy a middle ground between slow integrating converters (such as dual-slope) and very fast flash converters, making them the industry standard for 12- to 18-bit precision instrumentation, data acquisition, and process-control front ends. The MAX195BCWE+TG035 supports bipolar (±VREF) and unipolar (0 to VREF) input ranges selected per pin, accepts an external reference up to +5 V, and provides separate analog and digital supplies to minimize digital-noise coupling into the analog path. It achieves ±1 LSB integral non-linearity and ±1 LSB differential non-linearity, 90 dB SINAD and 87 dB THD, with a tri-state serial data output compatible with SPI/QSPI/MICROWIRE. Power-down current drops to 10 µA typical for battery-powered instrumentation. The internal calibration corrects linearity and offset errors on demand, eliminating the need for external trimming potentiometers and supporting tighter board layouts. The device accepts input bandwidths up to 4.5 MHz through its track/hold amplifier, enabling accurate sampling of audio-bandwidth signals well beyond the Nyquist limit. Typical applications include high-accuracy data-acquisition systems, instrumentation front ends, process control and industrial automation, weigh scales and panel meters, precision sensor signal conditioning, audio digitization, and medical instrumentation. Its 16-bit resolution makes it suitable for replacing older 14-bit and 12-bit SAR converters where headroom in dynamic range is required. When laying out the board, keep the AGND and DGND returns short and join them at a single point near the IC, route the analog input traces over a continuous ground plane, and place 10 µF + 0.1 µF decoupling on both AVDD and DVDD pins within 5 mm of the package body to preserve the converter's 90 dB SINAD performance. The conversion start (CONV) and serial clock (SCLK) lines should be guarded against adjacent switching traces to avoid deterministic digital coupling. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on any single distributor listing, giving procurement and design engineers a one-stop reference for the MAX195BCWE+TG035.
MAX195BEWE - 16-Bit 85ksps SAR ADC | Maxim Integrated
The Maxim Integrated MAX195BEWE is a 16-bit, 85 ksps successive-approximation register (SAR) analog-to-digital converter (ADC) housed in a 16-pin WSOIC (wide SOIC) surface-mount package. It combines high conversion speed, ±1 LSB linearity (B-grade), low power dissipation, and a 10 µA shutdown mode that suits battery-powered and portable instrumentation. The device accepts an external reference up to +5 V and offers pin-selectable unipolar (0 V to VREF) or bipolar (-VREF to VREF) input ranges, enabling flexible signal conditioning for both single-ended and true-differential sensor outputs. An SAR ADC is a precision data converter that performs a binary search against an internal capacitive DAC, one bit per clock cycle, to settle a sampled analog input to within half an LSB of the reference. The MAX195 architecture places this conversion loop behind a high-impedance input track/hold and an auto-calibration engine that nulls offset and linearity errors on power-up, eliminating the factory trim or external adjustment steps required by older successive-approximation parts. SAR ADCs such as the MAX195 are widely used in industrial process control, weigh scales, data-acquisition front ends, and precision instrumentation because they offer deterministic latency, intrinsic anti-alias behavior, and no pipeline delay compared with delta-sigma ADCs. Key features include a serial data interface (compatible with SPI/QSPI/MICROWIRE), separate AV DD and DV DD supplies that minimize digital-noise coupling into the analog path, and an integrated calibration engine that holds full 16-bit performance across the -40 °C to +85 °C industrial temperature range. According to the Maxim datasheet, the MAX195 achieves 85 ksps throughput while drawing only 36 mW (typical, ±5 V supplies), with shutdown reducing supply current to 10 µA. Internal calibration corrects linearity and offset on every power-up, so no external trim components are required. Typical applications include precision weigh scales, multi-channel data-acquisition systems, portable medical instruments, industrial process-control loops, and battery-powered sensor signal chains. The pin-selectable input range and small WSOIC-16 footprint simplify PCB layout in space-constrained designs. This page synthesizes distributor stock, drop-in alternatives, and design notes that complement the manufacturer datasheet without repeating it verbatim.
MAX195BMDE - 16-Bit 85ksps SAR ADC | Analog Devices (Maxim)
The Analog Devices (formerly Maxim Integrated) MAX195BMDE is a 16-bit, 85 ksps successive-approximation analog-to-digital converter (ADC) that combines high accuracy, low power consumption, and a 10 µA shutdown mode, housed in a 16-pin ceramic DIP (JEDEC MS-160C) package. The military temperature grade (-55 °C to +125 °C) suffix 'BMDE' designates the through-hole DIP variant qualified for harsh-environment systems. A successive-approximation ADC (SAR ADC) is a type of data converter that resolves a single analog sample per conversion cycle by performing a binary search against an internal precision DAC and comparator. SAR ADCs sit in the broader data-converter hierarchy alongside delta-sigma and pipeline ADCs, and are favored when designers need deterministic latency, no pipeline delay, and high DC accuracy at sample rates up to a few hundred ksps - making them the workhorse for industrial instrumentation, multichannel data-acquisition (DAQ) boards, and precision sensor front-ends. Key features of the MAX195BMDE include true 16-bit resolution with no missing codes, an integral nonlinearity (INL) of ±2 LSB max, 85 ksps throughput, three user-programmable input ranges (±5 V, 0 to 5 V, 0 to 10 V), a 10 µA shutdown mode for battery-powered applications, and an internal 4.096V reference. The device communicates through a high-speed parallel interface and supports both unipolar and bipolar true-differential analog inputs, eliminating the need for external signal-conditioning circuitry in many designs. The MAX195BMDE uses a charge-redistribution DAC array with a low-drift buried-zener reference, achieving 15-bit effective throughput at the full 85 ksps rate. The internal clock and control logic remove the requirement for an external state machine, and the parallel output bus allows direct connection to microprocessors, DSPs, or FPGAs. The combination of single +5 V analog supply operation and a software-controlled shutdown pin enables power budgets below 1 mW in duty-cycled remote-sensing applications. Typical applications include industrial process control and data acquisition, weigh-in digital medical, weigh-scale precision measurement, and portable battery-powered instrumentation. The wide ±5 V or 0-10 V true-differential inputs allow direct connection to bridge sensors, RTD signal chains, and 4-20 mA loop receivers. When designing with this device, ensure the input common-mode voltage stays within the supply rails and that bypass capacitors (one 10 µF tantalum plus one 0.1 µF ceramic) are placed within 5 mm of the supply pins. The ceramic-DIP package requires through-hole PCB assembly; verify a true-differential input signal path before omitting the input instrumentation amplifier. This page synthesizes distributor pricing, drop-in alternative cross-references, military-grade selection guidance, and practical design notes not collected in the manufacturer datasheet.
MAX196ACAI - 12-Bit 6Ch DAS, ±10V, 100kSPS, 28-SSOP | Maxim Integrated
The Maxim Integrated MAX196ACAI is a 12-bit, 6-channel, multi-range data-acquisition system (DAS) with 12-bit parallel bus interface, sampling at up to 100 kSPS and housed in a 28-pin SSOP (5.3 mm body width) package. It operates from a single +5 V analog supply and integrates a fault-protected analog input multiplexer, track/hold, successive-approximation ADC core, internal 4.096 V reference (or external reference option), and a microprocessor-compatible 12-bit parallel interface. A data acquisition system (DAS) is an integrated analog-front-end subsystem that combines input multiplexing, signal conditioning, sampling, and digital conversion into a single IC. It sits between the analog sensor world (transducers, ±10 V industrial signals, 4-20 mA loops) and a microprocessor or DSP, replacing the discrete chain of analog mux + op-amp driver + SHA + ADC + reference. The MAX196 belongs to the broader category of analog-to-digital converters (ADCs) and more specifically to multi-channel DAS ICs optimized for industrial-control front ends. Key features include 12-bit resolution with ±1/2 LSB linearity, software-programmable input ranges per channel (0 to +5 V, 0 to +10 V, ±5 V, ±10 V on MAX196), ±16.5 V fault-protected analog inputs that survive transients beyond the supply rails, an internal 4.096 V reference, and software-configurable acquisition/track mode for low-distortion sampling. The 100 kSPS throughput supports process-control loop rates, while the parallel bus interface eliminates the bit-banging overhead of serial ADCs in legacy 8/16-bit microcontroller designs. Architecturally, the part uses a charge-redistribution successive-approximation ADC with a laser-trimmed DAC array, delivering 73 dB SINAD and 83 dB spurious-free dynamic range at the Nyquist input. The on-chip reference and input-protection FETs are designed for industrial environments where common-mode voltages and ESD events routinely exceed standard ADC input tolerances. Typical applications include industrial process-control front ends (PLC analog input modules), multi-channel data loggers, instrumentation front panels, and multi-sensor embedded systems. Engineers reach for the MAX196 when they need true bipolar ±10 V industrial ranges without external resistor dividers, plus fault protection that lets the IC survive wiring faults on factory floors. When designing with this part, observe the analog supply decoupling rules (10 µF tantalum + 0.1 µF ceramic close to AV+ pin) and place a 0.1 µF bypass on the +5 V logic supply. The internal reference can be overdriven by an external ADR0x reference for higher absolute accuracy in calibrated instrumentation. This page synthesizes distributor pricing, SSOP drop-in alternatives, and practical design notes not found in the manufacturer datasheet, including cross-comparison against MAX196AEAI+ (extended-temperature grade), MAX196ACWI+ (SOIC-28 wide), and pin-compatible multi-channel DAS parts from Analog Devices.
MAX196AEAI - 12-Bit 100kSPS 6-Ch ±10V DAS ADC, SSOP-28 | Maxim
The Maxim Integrated (Analog Devices) MAX196AEAI is a multi-range, 12-bit data-acquisition system (DAS) that integrates a 6-channel analog input multiplexer, track-and-hold amplifier, successive-approximation register (SAR) ADC, and on-chip reference. It operates from a single +5V supply while accepting analog inputs as large as ±10V, samples at up to 100 kSPS, and presents data through a parallel interface. It is offered in a 28-pin SSOP package (EAI suffix) for surface-mount industrial designs. A Data Acquisition System (DAS) such as the MAX196 is a category of mixed-signal IC that combines the front-end signal conditioning (input mux, protection, T/H), the analog-to-digital conversion stage, and a digital host interface into a single device. Within the broader hierarchy of ICs, the MAX196 sits as: ADC -> Data Acquisition System -> Data Converter -> Mixed-Signal IC -> Semiconductor. Its primary value is replacing multiple discrete components (input protection resistors, mux, op-amp T/H, separate SAR, reference) with one chip, reducing BOM cost, board area, and design complexity. Key features include software-selectable input ranges per channel (±10V, ±5V, 0 to 10V, 0 to 5V for MAX196; ±4V, 0 to 4V for MAX198), internal 4.096V reference (with option to overdrive), ±1/2 LSB linearity (A grade), ±16.5V input protection (continuous), 6 analog input channels, three-state bi-directional data port compatible with 8/16-bit buses, and TTL/CMOS-compatible I/O. Internal sequential channel scanning plus user-programmable channel sequencing support per-channel setup. Architecturally, the device uses a capacitive-charge-distribution SAR converter with auto-calibration logic that nulls gain and offset errors at power-up. The on-chip reference is a buried Zener type with 50 ppm/°C typical drift. Analog inputs are routed through a fault-protected CMOS mux that tolerates overvoltages well beyond the supply rails without latch-up. Typical applications include industrial process control and PLC analog front ends, multi-channel data loggers, portable instrumentation, medical patient monitoring equipment, and rack-mounted test and measurement systems where ±10V industrial signal ranges must be digitized directly from a +5V-only supply. A key design tip: route AGND and DGND as a star-ground topology and decouple the +5V AVCC pin with both a 0.1 µF ceramic and a 10 µF tantalum as close to the IC as possible. For ±10V input ranges, use the internal 4.096V reference mode and rely on the on-chip dividers; for high-accuracy systems, drive REFADJ with a low-noise external op-amp or use the external-reference mode. This page synthesizes distributor pricing, drop-in alternatives drawn from Maxim's same product family (A/B/C grades, plus the +5V-only companion MAX198), and practical PCB layout guidance not consolidated in the original datasheet.
MAX196AENI - 12-Bit 6-Ch 100ksps Precision ADC | Maxim Integrated
The Maxim Integrated (now Analog Devices) MAX196AENI is a multi-range, single +5V, 12-bit data-acquisition system (DAS) with 12-bit bus interface, sampling at 100 ksps across 6 analog input channels and housed in a 28-pin PDIP (N) through-hole package. Its core headlines are a 6-channel single-ended or 6-channel pseudo-differential input mux, software-selectable input ranges (0 to +5V, 0 to +10V, ±5V, ±10V, 0 to +4.18V) and a successive-approximation ADC with 100 ksps throughput. A Data Acquisition System (DAS) is an integrated subsystem that combines analog input multiplexing, sample-and-hold, ADC conversion, and a digital interface in a single IC, eliminating the need for the designer to pair a discrete mux, S/H, and ADC. The MAX196 belongs to the precision SAR-ADC > multi-channel DAS > data-converter > signal-chain IC product hierarchy. The DAS sits between sensors/transducers and the host microcontroller or DSP, providing a clean digital representation of multiple analog signals with high noise immunity and bus-friendly I/O. Key differentiating features include 6 input channels in a single device (vs. typical 1 or 2 for standalone ADCs), software-programmable input ranges via internal PGA/scaling, a built-in track-and-hold and 4.096V reference, a 100 ksps conversion rate at ±1/2 LSB linearity, and a parallel 12-bit/8-bit bus interface that drops directly onto most 80xx-family microprocessors. The device operates from a single +5V supply and consumes 60 mW typical during conversion. TTL/CMOS-compatible I/O simplifies interface to modern MCUs without level shifters. Typical applications include process control, industrial data acquisition, instrumentation, automated test equipment (ATE), and embedded sensor monitoring. The parallel bus interface makes it particularly well suited to legacy 80xx designs and DSPs needing fast multi-channel capture, while the wide input-range flexibility lets a single board accept 4-20mA, 0-10V, and bipolar transducer outputs without external signal conditioning. A design consideration: the parallel interface consumes many MCU pins, so consider an SPI-based successor such as MAX197 or MAX1300-series parts for new designs with pin constraints. Decouple the supply with a 0.1uF ceramic plus a 10uF tantalum adjacent to the +5V and DGND pins.
MAX197ACAI+T - 12-Bit 100kSPS DAS, 28-SSOP | Analog Devices
The Analog Devices MAX197ACAI+T is a 12-bit, 100kSPS multi-range Data Acquisition System (DAS) requiring only a single +5V supply, packaged in a 28-pin SSOP (5.30mm width). It integrates a 12-bit successive-approximation ADC with an 8-channel analog input multiplexer, sample-and-hold, and a microprocessor-compatible parallel interface in one IC. A DAS (Data Acquisition System) is a mixed-signal integrated circuit that combines analog front-end multiplexing, sample-and-hold buffering, an analog-to-digital converter, and a digital interface into a single device. Within the broader product hierarchy, the MAX197 belongs to the SAR ADC (Successive Approximation Register Analog-to-Digital Converter) family, itself a sub-category of data converters (ADC) which sit inside the signal-chain / mixed-signal power management hierarchy. Its primary engineering value is replacing multi-chip discrete ADC designs with a single calibrated IC that handles analog signal conditioning, range scaling, and digital readout. Key features include software-selectable input ranges of ±10V, ±5V, 0 to +10V, and 0 to +5V, all derived from the internal 4.096V reference and on-chip range-switching network; 1/2 LSB linearity (A-grade); an 8-channel analog multiplexer with two software-selectable acquisition modes (8 single-ended or 4 differential); an 8+4 parallel bus interface with three-state I/O; and TTL/CMOS-compatible digital I/O. Operating from a single +5V supply, the part accepts bipolar input signals that exceed the supply rails, which removes the need for external negative supplies or input level shifters. The MAX197 uses a capacitive-DAC SAR architecture with an inherent track-and-hold input stage, achieving 100kSPS throughput at 12 bits and ±1/2 LSB integral nonlinearity (A grade). An internal 4.096V bandgap reference and flexible input-range scaling allow direct connection to industrial ±10V or 0-10V transducer outputs without external op-amp signal conditioning. The 8+4 parallel interface mode is compatible with 8-bit microprocessors, while the chip's internal mode register lets the host software configure channels and ranges on a per-conversion basis. Typical applications include industrial process control data acquisition, multichannel sensor interfacing, factory automation I/O modules, test and measurement front-ends, and any embedded system that requires 12-bit resolution across multiple bipolar input ranges without a negative supply rail. Its combination of bipolar-input capability, internal reference, and parallel interface makes it well suited to legacy 8-bit bus designs being upgraded to higher-performance mixed-signal front ends. When designing with this device, observe the recommended decoupling and analog-input layout practices. Place a 0.1µF ceramic bypass capacitor close to the +5V pin and a 10µF tantalum reservoir on the supply rail; use ground-plane construction and keep analog input traces short and away from digital switching lines. Verify that software-controlled channel/range selection bits are written before initiating a conversion to avoid invalid data. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
MAX197AENI - 12-Bit 100ksps 8-Ch DAS ADC | Maxim Integrated
The Maxim Integrated MAX197AENI is a multi-range, 12-bit data-acquisition system (DAS) requiring only a single +5V supply, yet accepting analog input signals that may span both above the power-supply rail and below ground. Packaged in a 28-pin PDIP through-hole package, the device integrates an 8-channel analog input multiplexer, sample-and-hold, and a successive-approximation ADC achieving 100 ksps throughput with ±0.5 LSB integral nonlinearity in the A-grade variant. The device operates from a single +5V supply while supporting bipolar input ranges of ±10V, ±5V, 0-10V, and 0-5V through software-configurable internal scaling resistors. A 12-bit analog-to-digital converter is a successive-approximation ADC that converts continuous analog signals into discrete 12-bit digital codes, balancing resolution against sampling speed for industrial, instrumentation, and process-control applications. As a member of the data-acquisition IC family, the MAX197 sits in the hierarchy of ADC -> data converter -> signal chain IC -> mixed-signal semiconductor. Its integrated front-end eliminates external signal-conditioning components, simplifying PCB design for multi-channel systems. Key features of the MAX197AENI include eight analog input channels with software-selectable input ranges, 100 ksps sampling rate, internal 4.096V reference (with optional external reference override), three-state data I/O port configurable for 8-bit buses, and TTL/CMOS-compatible digital I/O. The device also provides hardware- or software-triggered conversions, an end-of-conversion interrupt, and built-in overvoltage protection of ±25V on analog inputs without damage. Architecturally, the MAX197 employs a successive-approximation register (SAR) ADC core with an input multiplexer feeding a unity-gain sample/hold amplifier. The internal scaling resistors and reference buffer allow direct connection to high-voltage bipolar signals when operating from a single +5V rail. The internal reference may be bypassed in favor of an external ADRXXX-series reference for higher absolute accuracy. Typical applications include industrial process control, data loggers, robotics, pen tablet digitizers, and medical instrumentation. The wide input range capability (especially ±10V bipolar from a single +5V rail) makes it ideal for industrial sensors and PLC analog input modules. When designing with the MAX197, ensure that the analog input source impedance stays below the datasheet maximum (typically 1 kΩ for full accuracy) and that adequate decoupling (10 µF + 0.1 µF) is placed at AVDD and DVDD. The +5V single-supply operation significantly simplifies power tree design compared to bipolar-input ADCs requiring ±15V rails. This page synthesizes distributor pricing, parametric drop-in alternatives, and practical design notes beyond the manufacturer datasheet.
MAX198ACNI - 12-Bit 6-Ch 100ksps ADC | Maxim | Multi-Range
The Maxim Integrated MAX198ACNI is a 6-channel, multi-range, 12-bit data-acquisition system (DAS) with successive-approximation register (SAR) architecture, providing up to 100 ksps sampling rate on a single +5 V supply. Housed in a 28-pin PDIP (N) through-hole package, the device accepts analog inputs ranging up to ±4 V (MAX198) or ±10 V (MAX198 variant) with software-configurable input ranges of 0 to 10 V, 0 to 5 V, ±10 V, ±5 V, 0 to 4 V, and ±4 V, allowing a single IC to interface with multiple sensor signal levels without external scaling. An ADC (analog-to-digital converter) is a mixed-signal data converter that translates real-world analog voltages into a digital code for processing by microcontrollers, DSPs, or FPGAs. As a multi-range SAR ADC, the MAX198ACNI uses a charge-redistribution DAC and comparator to perform a 12-bit conversion in under 10 µs, balancing speed, accuracy, and simplicity. Its place in the broader taxonomy: ADC -> data converter -> mixed-signal IC -> power management / signal chain. The internal reference and rugged bipolar input structure simplify signal conditioning for industrial control loops. Key features include six analog input channels multiplexed to a single 12-bit ADC core, eight software-programmable input ranges, an internal 4.096 V reference, a three-state parallel digital interface compatible with 16-bit data buses, and TTL/CMOS-compatible logic levels. The 100 ksps throughput makes it suitable for closed-loop control and instrumentation sampling. Power dissipation is approximately 60 mW during continuous conversion and drops to under 1 mW in software-controlled power-down mode, which is valuable for battery-portable instrumentation. Typical applications include multi-channel industrial process-control data acquisition, programmable-logic controller (PLC) analog input modules, medical instrumentation signal conditioning, automated test equipment (ATE) front-ends, and embedded sensor-interface boards. The multi-range input allows direct connection to 4-20 mA current-loop receivers (with a sense resistor), thermocouple amplifiers, and strain-gauge bridges. When designing with the MAX198ACNI, bypass VDD and VSS pins with 0.1 µF and 10 µF capacitors placed within 5 mm of the device, route analog and digital grounds separately back to a star-point ground, and ensure the input signal does not exceed ±16 V absolute maximum to avoid input-protection diode conduction. The 'A' grade provides ±0.5 LSB INL and the 'C' suffix denotes the commercial 0 °C to +70 °C operating range. This page synthesizes real distributor stock, parametric drop-in alternatives, and PCB design guidance not found in the bare Maxim datasheet.
MAX198ACWI - 6-Channel 12-Bit DAS, 5V, 100kSPS | Maxim/ADI
The Analog Devices (formerly Maxim Integrated) MAX198ACWI is a 6-channel, multi-range, 12-bit Data Acquisition System (DAS) with a 12-bit parallel bus interface, packaged in a 28-pin wide SOIC. It performs successive-approximation analog-to-digital conversion at up to 100 ksps on six software-selectable analog input channels, and operates from a single +5 V supply, drawing 7.5 mA (typ) operating and 1 mA (typ) in power-down mode. A Data Acquisition System (DAS) such as this combines a multi-channel input multiplexer, a sample-and-hold amplifier, a SAR (Successive Approximation Register) ADC core, voltage reference support, and a digital bus interface into a single IC. The MAX198ACWI sits in the ADC IC family, beneath the broader category of data-conversion / data-acquisition semiconductors, and is used as the analog front-end in distributed control, instrumentation, and embedded systems where multiple analog signals must be digitized and delivered to a host CPU or DSP over a fast parallel port. Key features include software-configurable unipolar input ranges of 0 V to +VREF (where VREF is the internal 4.096 V bandgap or an external reference) and 0 V to +5 V, 6.0 us conversion time, an internal 4.096 V reference, and AC + DC (±1/2 LSB) linearity over the operating range. Software-configurable bipolar ranges (±VREF, ±5 V on the MAX196, ±10 V on the MAX197) are the user's choice. The three-state bidirectional data port is compatible with 16-bit data buses, and bus-release timing is matched to the read cycles of most 8051-family, 68HC11, and similar microprocessors. All digital I/O are TTL/CMOS compatible, simplifying level translation in mixed-voltage designs. Architecturally, the device uses a charge-redistribution SAR ADC with an input fault-protected multiplexer that tolerates ±16.5 V overvoltage on any analog input without damage. The internal reference can be overdriven externally for high-accuracy applications. MAX198ACWI is the commercial-temperature (0 °C to +70 °C) grade; MAX198AEWI extends the range to -40 °C to +85 °C. Typical applications include multi-channel data-acquisition front ends for industrial process control, PLC analog input modules, weigh scale and bridge-sensor digitizers, temperature-monitoring multiplexers (thermocouple/RTD via external signal conditioning), portable instrumentation, and battery-cell monitoring in UPS and renewable-energy systems. Embedded-system designers favor the part for its 6 multiplexed channels on one ADC, eliminating external analog switches and reducing both BOM and PCB area. When designing with the MAX198ACWI, ensure the analog inputs remain within ±16.5 V to avoid stressing the input-protection network, and bypass VDD with a 10 uF tantalum plus 0.1 uF ceramic combination placed within 1 cm of the supply pin to keep digital switching noise out of the SAR comparator. This page synthesizes distributor pricing, drop-in alternative parts from the same MAX196/MAX198 family, and practical PCB-layout guidance not found in the bare manufacturer datasheet.
MAX198AEAI - 12-Bit 6-Ch DAS w/ Fault Protection | Maxim Integrated
The Maxim Integrated MAX198AEAI is a 12-bit, 6-channel, multirange data acquisition system (DAS) with parallel interface and built-in fault protection, supplied in a 28-pin SSOP surface-mount package. The device integrates a 12-bit successive-approximation ADC core with 8 software-selectable analog input ranges (0 to +5 V, 0 to +10 V, ±5 V, ±10 V, 0 to +VREF, 0 to 2 x VREF, ±VREF, ±2 x VREF) and an internal 4.096 V bandgap reference, all from a single +5 V supply. The MAX198AEAI provides 100 kSPS throughput across six analog input channels multiplexed into a single ADC, with software-configurable unipolar/bipolar range selection per acquisition. A Data Acquisition System (DAS) is a mixed-signal integrated circuit that combines an analog multiplexer, sample-and-hold, ADC, voltage reference, and digital interface into a single package. DAS parts occupy the data-acquisition tier of the signal chain hierarchy: sensor/analog front-end -> multiplexer -> DAS/ADC -> processor. By integrating the analog signal path on-chip, MAX198-class parts replace multi-chip solutions containing a discrete MUX, op-amp buffer, reference, and stand-alone ADC, simplifying PCB layout and reducing system BOM cost while preserving noise performance. Key differentiating features include the 12-bit ±1/2 LSB linearity specification, ±16.5 V overvoltage fault protection on each analog input that survives transients without latching, a hardware/software shutdown mode that drops supply current below 100 µA, and an internal 4.096 V reference that can also be overdriven by an external source. The parallel 12-bit bus interface with standard CS/RD/WR controls simplifies connection to 8051-, 68HC11-, and DSP-family processors without external glue logic. Typical applications include industrial process-control front ends, data loggers, multichannel instrumentation, isolated sensor signal acquisition, panel meters, and multiloop PLC analog input modules. The combination of multirange inputs and fault tolerance also fits HVAC controllers and energy-management systems where sensor wiring may carry large transients. When designing with the MAX198AEAI, place the +5 V decoupling capacitors (10 µF tantalum + 0.1 µF ceramic) within 5 mm of the AV+ and DV+ pins, and route the analog ground plane beneath the part to avoid coupling digital switching noise into the ADC reference. The internal reference output (REF) requires a 4.7 µF bypass capacitor; using a smaller value will degrade linearity at full-scale. This page synthesizes distributor pricing, parametric substitutes, and PCB-level design notes not found in the standalone datasheet.
MAX198AENI - 12-Bit 8-Ch 100ksps ±4.18V DAS | Maxim Integrated
The Maxim Integrated MAX198AENI is a 12-bit, 8-channel data acquisition system (DAS) with a 100 ksps successive-approximation ADC and a 12-bit parallel bus interface, housed in a 28-pin PDIP (300 mil, through-hole DIP) package. It integrates an analog input multiplexer, precision 4.18 V internal reference, track/hold amplifier, and clock generator on a single IC, accepting bipolar input ranges of ±4.18 V with overvoltage protection up to ±16.5 V. The internal reference is factory-trimmed to 4.18 V ±1% with a typical temperature drift of 35 ppm/°C. A Data Acquisition System (DAS) is a mixed-signal integrated circuit that combines an analog-to-digital converter (ADC), input multiplexer, sample-and-hold, reference, and bus interface in one package. The DAS hierarchy goes: DAS -> ADC IC -> data converter -> mixed-signal IC -> integrated circuit. By integrating eight analog channels and a high-accuracy reference onto one die, the MAX198 reduces board area, BOM cost, and design complexity compared to discrete ADC-plus-frontend designs. It belongs to Maxim's MAX196/MAX198 family, a long-running 12-bit DAS series widely deployed in industrial, instrumentation, and process-control equipment. Key features include 8 single-ended analog input channels, 12-bit resolution with ±0.5 LSB (max) relative accuracy, ±4.18 V bipolar input range, and 100 ksps sampling rate. The MAX198AENI supports 2.5 V operation from a single +5 V analog supply and a +5 V digital supply, with low analog supply current of 6 mA at 100 ksps. Its hardware-mode operation simplifies firmware: conversions start on RD-bar falling edge, and the device bus-releases the data bus when RD-bar returns high, enabling straightforward interface to 80C31, 68HC11, and similar 8-bit microcontrollers. The architecture uses a charge-redistribution successive-approximation ADC with a laser-trimmed 12-bit DAC. The internal reference settles within 5 ms after power-up, and the analog inputs survive ±16.5 V overvoltage without damage. The MAX198 differs from the MAX196 by offering a 12-bit (rather than 14-bit) data bus and ±4.18 V input range rather than the 0 to 5 V / ±5 V ranges of related parts. Typical applications include industrial process control, multi-channel data loggers, battery monitoring systems, and PC-based instrumentation front-ends. With 8 channels and bipolar inputs, the device addresses low-level signal-conditioning needs in factory automation and instrumentation where on-board signal sources are ±4 V class. This page synthesizes distributor stock, drop-in alternatives (MAX198BCNI+, MAX198BENI+) and practical design notes not found in the Maxim datasheet.
MAX198BCAI - 12-Bit 6-Ch 100ksps DAS ADC | Maxim Integrated
The Maxim Integrated MAX198BCAI (now supplied by Analog Devices / Maxim Integrated) is a 6-channel, multi-range, single +5V, 12-bit Data Acquisition System (DAS) ADC with 12-bit parallel bus interface and fault-protected analog inputs, housed in a 28-pin SSOP package. It samples at up to 100 ksps per channel with 1/2-LSB linearity (B-grade), supports software-selectable unipolar input ranges (0V to +VREF, 0V to +5V), and accepts either the internal 4.096V reference or an external reference. A multi-range, multi-channel DAS (Data Acquisition System) is an integrated analog front-end plus ADC subsystem that combines an input multiplexer, channel-level signal conditioning, a sample-and-hold, a reference, and a successive-approximation ADC into a single IC. In the broader taxonomy it sits under ADC -> ADC/DAC -> data converter -> signal-chain IC -> semiconductor. The MAX198 sits inside this hierarchy as a complete micro-controller-attached data acquisition block rather than a bare SAR ADC, eliminating the external MUX, reference, and T/H the engineer would otherwise need to glue together. Key features of the MAX198BCAI include 12-bit resolution with 1/2 LSB integral non-linearity, single +5V supply operation, fault-tolerant inputs that survive up to +/- 16.5V without damage, an internal 4.096V reference, six software-configurable analog input channels, and a high-speed 12-bit parallel microprocessor interface. The fault-protected input multiplexer allows the analog inputs to be hot-plugged or driven beyond the rails without latching or damaging the converter, which is critical in industrial and process-control front-ends. Architecturally the part is a successive-approximation register (SAR) ADC fronted by a fault-protected CMOS MUX and a differential sample-and-hold, with the reference shared between the MUX scale network and the SAR DAC. This topology lets the user switch per-channel gain/range under software control while still achieving 100 ksps throughput on any channel. The parallel interface and fast track/hold make the part suitable for direct connection to 8-bit and 16-bit microprocessors and DSPs without wait-state logic. Typical applications include industrial process control and instrumentation, multi-channel data loggers, PLC analog input modules, factory automation and SCADA remote terminal units (RTUs), and battery-powered portable measurement instruments. Designers also use the MAX198 in medical patient-monitoring front ends and as a single-chip replacement for discrete MUX + ADC + reference solutions where board area is constrained. When designing with the MAX198BCAI, place a 10 uF (minimum) and a 0.1 uF ceramic bypass capacitor directly at the AVDD and DVDD pins to keep digital switching noise out of the conversion result. The unused analog channels should be tied to AGND (or any input within the allowed range) rather than left floating, as floating inputs couple charge-injection noise from the MUX into adjacent active channels and degrade INL.
MAX198BENI - 12-Bit 100kSPS 6-Ch DAS 28-PDIP | Maxim Integrated
The Maxim Integrated (Analog Devices) MAX198BENI is a 12-bit, 6-channel, multi-range data acquisition system (DAS) with fault-protected inputs and a parallel microprocessor interface, housed in a 28-pin PDIP through-hole package. Operating from a single +5V supply, it delivers 100 ksps throughput, 1/2-LSB linearity, and software-selectable input ranges of 0V to +VREF or 0V to +5V with an internal 4.096V or external reference. The part combines an input multiplexer, track/hold, 12-bit ADC, and channel-selection logic on-chip. A data acquisition system (DAS) is an integrated mixed-signal IC that aggregates analog multiplexing, sample-and-hold, and ADC conversion into a single chip, sitting between analog sensors and a digital processor within the broader hierarchy of data converters -> ADC/DAC -> signal chain -> mixed-signal ICs -> semiconductors. The MAX198 family was designed for industrial process-control and instrumentation systems requiring robust analog front ends. Key features of the MAX198BENI include fault-protected input multiplexers that withstand ±16V overvoltages without damage, software-configurable unipolar input ranges (0V to +VREF or 0V to +5V), an on-chip 4.096V reference (5 ppm/°C typical), and a 12-bit parallel interface for fast data throughput. The -B grade provides ±1/2-LSB INL and DNL linearity, while the 100 ksps sampling rate supports most industrial control loops. The device uses a successive-approximation register (SAR) architecture with an input track-and-hold, allowing accurate acquisition of fast transient signals up to the Nyquist limit of the 100 ksps sample rate. The fault-protected input multiplexer is rated to ±16V, eliminating external protection circuitry in many industrial applications. Typical applications include industrial process control, multi-channel data logging, PLC analog input modules, and instrumentation front-ends. The wide input range and fault protection make it well-suited for factory-floor environments where sensor signals vary widely and wiring transients are common. When designing with this part, ensure the analog input signal source impedance stays below the datasheet-specified limit (typically 1 kΩ at 100 ksps) to avoid conversion errors, and place the +5V decoupling capacitor within 10mm of the VDD pin to suppress digital switching noise from coupling into the analog path. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing engineers a single consolidated source for sourcing decisions.
MAX198BEWI - 12-Bit 100kSPS Multirange DAS | Maxim Integrated
The Maxim Integrated MAX198BEWI is a multirange, single +5V, 12-bit data-acquisition system (DAS) with 6 analog input channels and an 8-channel successive-approximation ADC architecture. The part is specified for industrial temperature grades and is housed in a 28-pin wide SOIC (SO) package, supporting bipolar input ranges up to ±4V without external negative supplies. According to the manufacturer datasheet, the MAX198BEWI converts up to 100k samples per second, with input ranges of 0 to 5V, 0 to 10V, ±5V, and ±4V (additional ±10V and ±20V ranges are supported via external resistor dividers), and includes fault-protected analog inputs that survive ±25V without damage. A Data Acquisition System (DAS) is an integrated mixed-signal IC that combines a multi-channel analog input multiplexer, sample-and-hold amplifier, analog-to-digital converter, voltage reference, digital control logic, and parallel bus interface in a single package. DAS devices occupy a hierarchy of mixed-signal IC -> data acquisition system -> ADC with MUX and reference -> 12-bit successive-approximation DAS. They differ from standalone ADCs by including analog signal conditioning and a parallel CPU-compatible digital interface, eliminating the need for external precision references, input protection circuits, and channel-switching glue logic. The MAX198BEWI's key differentiating features include: software-configurable analog input ranges (four bipolar/unipolar ranges plus programmable gain amplifier), ±25V fault-tolerant analog inputs, integrated 4.096V bandgap reference, 100kHz throughput at 12-bit resolution, hardware/software conversion start modes, and TTL/CMOS-compatible parallel interface supporting 8-bit and 16-bit bus configurations. These features enable robust multi-channel measurement from a single +5V supply, eliminating the negative supply rail required by many bipolar-input ADCs. Architecturally, the MAX198 uses a successive-approximation register (SAR) ADC core with an input-divided charge-redistribution DAC and an internal input sample-and-hold. The 6-channel analog input MUX supports both single-ended and differential modes. The integrated PGA provides software-selectable input ranges, and the input protection network clamps transients up to ±25V. An internal 4.096V reference may be bypassed for an external reference when system accuracy demands it. Typical applications include industrial process control and instrumentation, data loggers, panel meters, multi-channel data acquisition boards, medical patient monitoring, and factory automation PLC analog input modules. The +5V-only supply requirement and built-in fault protection simplify the analog front-end in these systems. When designing with the MAX198BEWI, ensure the analog input protection diodes are accounted for; do not apply voltages exceeding ±25V even though the device tolerates them, because sustained fault conditions dissipate power in the protection network. Use an external op-amp buffer when source impedance exceeds the specified input bandwidth, and decouple the +5V supply with both 10uF and 0.1uF capacitors placed close to the AVDD pin. This page synthesizes distributor pricing, drop-in alternative coverage across Maxim/Analog Devices family members, and practical design notes not found in the manufacturer datasheet.
MAX199ACAI - 12-Bit 8-CH Multi-Range DAS, 28-SSOP | Maxim
The Analog Devices / Maxim Integrated MAX199ACAI is a 12-bit, 8-channel, multi-range data-acquisition system (DAS) with 8+4 parallel bus interface, fault-protected inputs, and a 100 ksps sampling rate, housed in a 28-pin SSOP package. The MAX199ACAI accepts bipolar input ranges of +/-4V and +/-2V as well as unipolar ranges of 0V to +4V and 0V to +2V, requiring only a single +5V supply. The 0 to +5V analog input range and 0 to +10V range are not supported on this variant; those ranges are provided by the higher-input MAX197. A data-acquisition system (DAS) is an integrated circuit that combines an analog multiplexer, sample-and-hold amplifier, and analog-to-digital converter into a single chip, allowing one ADC to sequentially digitize multiple analog channels. DAS devices sit within the broader signal-chain hierarchy: sensor -> multiplexer -> sample-and-hold -> ADC -> digital interface -> microcontroller. By integrating these functions on a single die, DAS ICs save cost, board area, and design time compared with discrete implementations, while ensuring that channel-to-channel gain and offset errors track each other across temperature. Key features of the MAX199ACAI include +/-4V, +/-2V, +4V, and +2V software-selectable input ranges, an internal 4.096V reference, ±16.5V fault-protected analog inputs, a track/hold with 100 ksps throughput, an 8+4 parallel microprocessor interface, and single +5V operation. Internal channel-scan circuitry supports sequential or single-channel conversions. Architecturally, the device uses a successive-approximation ADC core with an input fault-protection network, an input track/hold amplifier, and a low-drift buried-zener reference (or external REF option). The input protection clamps transients up to ±16.5V without damaging the mux, which is critical for industrial control inputs where transients are common. Typical applications include multi-channel data-acquisition front ends, industrial process controls, robotics, and pen-tablet digitizers. The bipolar/unipolar range flexibility allows one PCB to serve 4V, 12V, and industrial-sensor signal levels. When designing with this part, place a 0.1µF ceramic bypass close to VDD and a 4.7µF tantalum bulk cap on the analog supply. The internal reference requires a 4.7µF bypass; using a smaller value increases noise and worsens INL. The MAX199ACAI is the SSOP/industrial-temperature version; the MAX160B/WI variants are available in 28-SOIC, and the MAX199BCAI offers 12-bit ±1 LSB linearity.
MAX199ACNI - 12-Bit 100ksps 8-Ch DAS | Maxim Integrated
The Maxim Integrated MAX199ACNI is a multi-range, 12-bit data-acquisition system (DAS) that operates from a single +5V supply, delivers up to 100 ksps throughput, and integrates an 8-channel analog input multiplexer with software-configurable input ranges of ±4V, ±2V, +4V, and +2V. The device is housed in a 28-pin PDIP (N) through-hole package and combines the input MUX, track-and-hold, successive-approximation ADC, 4.096V internal reference, and parallel 8+4 bus interface on a single monolithic die. A Data Acquisition System (DAS) is an integrated mixed-signal subsystem that combines an analog front-end (multiplexer, protection, and signal conditioning), a sample-and-hold amplifier, and an analog-to-digital converter with on-chip reference and digital interface. The MAX199 belongs to the successive-approximation-register (SAR) ADC family, sitting in the precision industrial-measurement tier of the ADC taxonomy: SAR -> data converter -> ADC -> mixed-signal IC -> semiconductor. By collapsing the front-end and reference into one package, the MAX199 removes the design burden of choosing a separate reference, MUX driver, and protection network - the part that an engineer designing a process-control or instrumentation front-end would normally have to qualify as separate components. Key features include ±16.5V fault-protected analog inputs, a track-and-hold with 100 kHz full-power bandwidth, 12-bit resolution with no missing codes, an internal 4.096V buried-zener reference (trimmed to ±1%), and an 8+4 parallel interface compatible with 8-bit µP buses. The internal MUX handles single-ended inputs in either unipolar or bipolar mode, with channel selection and input-range setting done through a single write to an on-chip register. Architecturally, the MAX199 uses a charge-redistribution SAR core clocked from an internal RC oscillator (~1.56 MHz typical), which yields 12 conversion cycles per sample (roughly 8 µs per conversion at 100 ksps). The buried-zener reference and thin-film ladder DACs deliver low gain drift and low integral nonlinearity, while the input MUX sits behind ±16.5V clamping diodes that protect downstream circuitry from out-of-range transients. Typical applications include process-control front-ends, data loggers, industrial sensor signal conditioning, panel meters, and any 5V-only multichannel measurement subsystem. The wide input range and on-chip reference make it a strong fit when an external reference or negative supply is undesirable. When designing with this device, note that the MAX199ACNI is the through-hole PDIP variant intended for legacy or hand-prototype boards; the MAX199AENI is the SO-28 variant, the MAX199AEAI is the SSOP-28 variant, and the MAX199ACWI is the wide-SO variant - all share the same die and pinout. Decouple VDD with a 0.1 µF ceramic close to the supply pin and add a 10 µF bulk capacitor on the analog supply to keep the reference stable under digital activity. This page synthesizes distributor pricing as of 2026-10-15, drop-in same-package alternatives, and practical design notes not found on the manufacturer product page alone.
MAX199AENI - 12-Bit 8-Ch DAS, +5V, Multi-Range ADC | Maxim
The Maxim Integrated MAX199AENI is a 12-bit, 8-channel, multi-range data-acquisition system (DAS) that operates from a single +5V supply and delivers up to 100 ksps conversion throughput, housed in a 28-pin PDIP package. It accepts four software-selectable analog input ranges (±4V, ±2V, +4V, +2V), integrates an 8-channel analog multiplexer with fault-protected inputs up to ±16.5V, and provides a parallel 8+4 bus interface for direct connection to microcontrollers and DSPs. Internal track/hold, reference, and clock eliminate most external components. A Data Acquisition System (DAS) is an integrated mixed-signal IC that combines an analog input multiplexer, sample-and-hold amplifier, analog-to-digital converter (ADC), voltage reference, and digital interface into a single package. The MAX199 belongs to the broader category of successive-approximation-register (SAR) ADCs, which sit within precision data-converter ICs and the larger power-management/mixed-signal semiconductor hierarchy. DAS parts are used where a system needs to digitize multiple analog channels without building a discrete front end. Key features include software-configurable bipolar or unipolar input ranges via a single byte write, ±16.5V input fault protection that survives transients outside the supply rails, an internal 4.096V precision reference with ±0.5% accuracy, and a hardware-only shutdown mode that drops supply current below 1 mA. The internal MUX settles within 1.5 µs for full-scale transitions, and the device supports both single-ended and pseudo-differential input topologies through channel-pair configuration. Architecturally, the MAX199 uses a charge-redistribution SAR core with an integrated sample-and-hold, laser-trimmed thin-film input resistors that establish the four calibrated input ranges, and a digitally controlled fault-protection clamp network at each MUX input. Conversion is triggered by RD-bar plus an asynchronous clock, and the 8+4 interface reads two consecutive bytes to assemble the 12-bit word, which simplifies connection to 8-bit microcontrollers. Typical applications include industrial process-control front ends, multi-channel data loggers, instrumentation with up to eight sensors, portable battery-powered measurement equipment, and embedded analog I/O modules for PLC and DSP-based systems. The bipolar ±4V and ±2V ranges make it a natural fit for transducer signal conditioning where signals swing around ground. When designing with the MAX199AENI, plan for 100 ksps operation at +5V with bypass capacitors placed close to the supply and reference pins; verify that MUX channel resistance is acceptable for source impedances above 5 kohm by adding an external buffer. This page synthesizes distributor pricing, verified drop-in alternatives, and practical design notes for engineers evaluating the MAX199.
MAX199BEAI - 12-Bit 8-Channel +5V Multi-Range DAS | Maxim Integrated
The Maxim Integrated MAX199BEAI is a 12-bit, 8-channel, multi-range data-acquisition system (DAS) that operates from a single +5V supply. It integrates an 8-channel analog multiplexer, a track/hold amplifier, a 12-bit successive-approximation ADC, an internal 4.096V reference, and an 8+4 parallel bus interface into a 28-pin SSOP package, with analog input ranges of ±4V, ±2V, +4V, and +2V. A multi-range DAS is a category of mixed-signal data-acquisition IC that combines channel scanning, input signal conditioning, sample-and-hold, and analog-to-digital conversion in a single package. The hierarchy is: DAS -> mixed-signal IC -> data converter -> analog frontend. By collapsing these blocks into one device, MAX199BEAI reduces component count, simplifies PCB layout, and shortens the analog signal path - critical for high-integrity measurement systems where ground loops, leakage, and trace-induced noise corrupt low-level signals. Key features include ±4V, ±2V, +4V, and +2V software-selectable input ranges, ±16.5V overvoltage fault protection on each analog input, an internal 4.096V reference (which can also be overdriven by an external reference), and a maximum sampling rate of 100 kSPS. The device accepts an 8-bit-wide data bus with a 4-bit address/data-multiplexed bus option, allowing direct connection to most popular 8-bit microprocessors. All digital inputs and outputs are TTL/CMOS compatible, and the three-state data I/O interface simplifies bus-sharing in multiprocessor designs. The internal reference settles to within 1 LSB within 200 µs after power-up, enabling fast system startup. Architecturally, the MAX199BEAI uses a successive-approximation register (SAR) ADC preceded by a high-impedance CMOS analog input multiplexer. The track/hold amplifier preserves the input during conversion, providing accurate 12-bit results at full throughput. The on-chip reference is a buried-zener type that maintains ±25 ppm/°C typical drift across the industrial -40°C to +85°C temperature range, while fault-protected analog inputs clamp transient excursions up to ±16.5V without damage. Typical applications include industrial process-control systems (PLC analog input modules, 4-20 mA loop digitization with external resistor), portable data loggers, medical instrumentation front ends, factory-automation sensor multiplexing, and embedded system analog I/O boards. The 8-channel count aligns with the 8-input sweet spot for most supervisory control loops. When designing with MAX199BEAI, decouple the analog +5V (AVDD) and digital +5V (DVDD) supplies separately with 10 µF and 0.1 µF capacitors placed close to the respective pins; a noisy digital supply will couple through the SAR comparator and degrade ADC linearity. For absolute accuracy above 12 bits, overdrive the internal reference with an external low-noise 4.096V source. Use the MODE pin to select between internal acquisition clock and external clocking for precise sample-rate control. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes drawn from the manufacturer datasheet and reference designs - content that goes beyond the stock datasheet to shorten evaluation time for working engineers.
MAX22530AWE+ - Isolated 12-bit 4-Ch SAR ADC | Analog Devices
The Analog Devices MAX22530AWE+ is a galvanically isolated, 4-channel, multiplexed, 12-bit successive-approximation-register (SAR) analog-to-digital converter (ADC) housed in a 16-pin wide-body SOIC (WSOIC) package. According to the MAX22530 datasheet, it integrates an isolated DC-DC converter that powers all field-side circuitry, allowing field-side measurements to be taken with no external power supply. The device samples at up to 22 ksps and exposes a serial (SPI-compatible) digital interface on the logic side. A SAR ADC is a successive-approximation-register analog-to-digital converter, a class of precision ADC that uses a binary-search algorithm and a precision DAC to convert an input voltage to a digital code in a fixed number of clock cycles. Isolated ADCs sit within the broader signal-chain hierarchy of data-acquisition front ends -> ADCs -> precision converters -> mixed-signal ICs -> semiconductors, where galvanic isolation adds a critical safety barrier between hazardous field voltages and the host processor. Key features include 12-bit resolution, four single-ended input channels multiplexed to one SAR core, integrated digital isolation, an integrated isolated DC-DC converter on chip, and a logic-side supply range of 1.71 V to 5.5 V. The wide-body SOIC package provides the reinforced clearance/creepage required for reinforced isolation. The MAXSafe™ architecture is designed for industrial sensors, PLC analog input modules, and any system that requires isolation between the analog front end and a low-voltage digital controller. Typical applications include isolated voltage and current sensing in motor drives, solar inverters, and industrial process-control loops; PLC analog input modules; battery-management systems; and medical equipment where patient isolation is mandatory. The internal DC-DC converter eliminates the bulky external isolated supply, shrinking the BOM. When designing with the MAX22530, pay attention to the input-channel MUX settling time and the recommended input RC anti-alias filter. Place decoupling capacitors close to both field-side and logic-side supply pins, and observe the wide-body SOIC PCB clearance rules for the rated isolation voltage.
MAX71071+ - 24-Bit Dual-Channel Isolated Metrology ADC | Maxim Integrated
The Maxim Integrated MAX71071+ (now under Analog Devices) is a 24-bit, dual-channel, isolated analog-to-digital converter (ADC) designed for high-precision metrology applications. Housed in a 10-pin uMAX/uSOP surface-mount package, the device pairs with a compatible MAX71xxx host to provide simultaneous current and voltage measurements. The host supplies control, command, and isolated power, while a pulse transformer provides the isolated data and clock path between the device and host, eliminating the need for additional optocouplers or digital isolators in the measurement subsystem. A metrology ADC is a high-resolution data converter optimized for energy metering, power-quality monitoring, and revenue-grade instrumentation. Compared with general-purpose ADCs, metrology converters emphasize DC accuracy, wide dynamic range, low noise, and excellent linearity over industrial temperature ranges. The MAX71071+ sits in the converter hierarchy as: ADC -> data converter -> signal chain IC -> analog/mixed-signal semiconductor. Key features include 24-bit resolution across two input channels, an integrated isolated interface through the host pulse transformer, simultaneous sampling of voltage and current channels, and a small 10-pin uSOP/uMAX footprint suitable for compact, isolated current-sensing modules. The device supports industrial temperature grades and is targeted at smart-meter, sub-metering, and power-monitoring designs where galvanic isolation and high accuracy are mandatory. The MAX71071+ uses an isolated SPI/dual-wire interface to the host, removing the requirement for external digital isolators. This architecture reduces BOM count, board area, and design complexity for isolated energy-measurement front ends. The companion host MAX71xxx device provides the isolated power rail to the secondary side via the pulse transformer, which also carries the bidirectional data between host and ADC. Typical applications include single-phase and polyphase electricity meters, branch-circuit power monitors, isolated current-sensing modules for industrial equipment, solar inverter string monitors, EV charging-station energy meters, and smart power strips. The integrated isolation simplifies safety compliance for line-voltage measurements. When designing with the MAX71071+, follow the datasheet reference layout for the pulse transformer and keep the secondary-side bypass network within the recommended geometry. A [DATA_NEEDED: full input bandwidth / sample rate] and [DATA_NEEDED: effective number of bits / SINAD] should be confirmed from the datasheet, since the available web snippets did not include complete AC performance numbers. This page synthesizes distributor pricing, package-level specifications, drop-in package alternatives, and design guidance distilled from the Maxim Integrated datasheet - context that is not presented in a single view on any major distributor page.
MCP3008-I/SL - 8-Ch 10-Bit SAR ADC, SPI, SOIC-16 | Microchip
The Microchip Technology MCP3008-I/SL is a 10-bit successive-approximation-register (SAR) analog-to-digital converter with 8 input channels and an SPI-compatible serial output, housed in a 16-pin narrow-body SOIC (SL) package rated for the industrial temperature range. It operates from a single 2.7 V to 5.5 V supply, draws only 5 nA typical standby current and approximately 320 µA at full conversion rate, and delivers up to 200 ksps throughput at 5 V VDD. The -I suffix indicates the industrial -40 °C to +85 °C operating range, and the SL suffix denotes the SOIC-16 (3.90 mm body) package. An SAR ADC is a successive-approximation-register analog-to-digital converter - a subtype of data-conversion IC that performs one bit at a time using an internal sample-and-hold plus a comparator against a binary-weighted DAC. SAR ADCs sit in the broader taxonomy of ADC -> data converter -> mixed-signal IC -> semiconductor. Unlike sigma-delta ADCs they require no integration window, giving deterministic latency and excellent DC accuracy, which is why they dominate multi-channel embedded sensing. Key differentiating features of the MCP3008 are its 8 single-ended (or 4 pseudo-differential) input channels multiplexed onto a single SAR core, an on-chip track-and-hold, and a low-latency SPI interface that uses simple CMOS thresholds rather than true differential signaling. The device accepts SPI clocks up to 3.6 MHz at 5 V and 2 MHz at 2.7 V, and consumes just 320 µA typical during continuous conversion. Built-in sample-and-hold minimizes aperture uncertainty, and the simple command-frame protocol allows any 8-pin microcontroller GPIO port to interface without hardware SPI peripherals. Architecturally the part integrates an 8-to-1 input MUX, a 10-bit SAR core, a low-drift internal reference, and an SPI slave controller on a single die. The -I grade adds factory-trimmed bandgap and reference scaling for industrial-grade temperature drift, while the SL package uses an industry-standard JEDEC SO-16 footprint that is interchangeable across many manufacturers. Compared with 12-bit alternatives the resolution trade-off is intentional: 10 bits at 200 ksps yields 1024 codes across a 0–VREF range, adequate for thermistors, LDRs, potentiometers and most sensor front ends. Typical applications include Raspberry Pi / Arduino sensor expansion, multi-channel temperature and process monitoring, battery-cell voltage monitoring in BMS designs, hobbyist data loggers, and low-cost instrumentation front ends. The 8-channel count is well matched to typical MCU board designs where a single chip digitizes a sensor cluster. Designers should budget for adequate VDD decoupling (100 nF + 10 µF close to the supply pin) and route the SPI lines away from analog traces to limit digital crosstalk into the sample-and-hold. The internal reference (≈2.048 V at 5 V VDD) is sufficient for most 0–5 V applications but an external reference pin is not provided - applications needing absolute accuracy should bias the analog inputs against a known rail. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, helping engineers evaluate the MCP3008-I/SL for new designs and second-source against cross-brand equivalents.
MCP3208-CI/SL - 12-Bit 8-Ch SAR ADC, SPI, SOIC-16 | Microchip
The Microchip Technology MCP3208-CI/SL is a 12-bit, 8-channel successive approximation register (SAR) analog-to-digital converter (ADC) with an SPI-compatible serial interface, housed in a 16-pin SOIC (SL) package. Operating from a single 2.7V to 5.5V supply, it delivers up to 100 ksps throughput and integrates 8 input channels that can be software-configured as either 8 single-ended inputs or 4 pseudo-differential pairs. An analog-to-digital converter is a mixed-signal integrated circuit that converts a continuous-time, continuous-amplitude voltage on its input pin into a discrete digital code at its output. SAR ADCs in particular use a binary-search algorithm with an internal sample-and-hold and capacitive DAC to converge on the input voltage in N conversion cycles (N = number of bits). SAR converters sit within the broader ADC family alongside delta-sigma (high-resolution, low-speed) and pipeline ADCs (very-high-speed, multi-Msps), and are favored for low-latency, moderate-resolution sampling in embedded systems where determinism and simple serial interfacing matter more than ultimate resolution. Key features include ±1 LSB maximum DNL, ±1 LSB maximum INL, low power consumption of 5 nA standby current and 0.5 mA typical active current at 5V, and an industrial-grade operating temperature range of -40 C to +85 C. The SPI interface uses a standard 4-wire arrangement (CS, DIN, DOUT, CLK), is compatible with 8-bit serial protocols, and supports daisy-chaining of multiple devices on the same bus. The device combines a track-and-hold input stage with a successive-approximation core and on-chip clock. The pseudo-differential input mode provides improved common-mode rejection for bridge sensors and thermocouple interfaces, while single-ended mode maximizes channel count for general-purpose monitoring of 8 separate analog signals. Typical applications include factory automation sensor multiplexing, battery monitoring in portable instruments, data acquisition front-ends for HVAC controllers, and robotics joint position sensing. The SOIC-16 wide-body package simplifies hand-prototyping and is widely accepted by contract assemblers. When designing with the MCP3208, ensure VDD is well-decoupled with a 1 uF ceramic capacitor placed within 5 mm of the AVDD pin, and that the analog input source impedance stays below 1 kohm to avoid converter gain errors. Note that -CI versions are specified over -40 C to +85 C, while -BI versions extend to -40 C to +125 C. This page synthesizes real-time distributor pricing, drop-in alternatives from the same Microchip SAR ADC family, and application notes not collated in the standalone datasheet, helping you evaluate whether MCP3208-CI/SL is the right ADC for your 8-channel embedded design.