ADC/DAC
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MAX146BCAP - 12-Bit 8-Ch 133kSPS Serial ADC | Maxim Integrated
The Maxim Integrated MAX146BCAP is a +2.7V, low-power, 8-channel, 12-bit successive-approximation analog-to-digital converter (ADC) housed in a 20-pin SSOP package with a 133 kSPS sampling rate. According to the Analog Devices MAX146 datasheet, it integrates an 8-channel analog multiplexer, a high-bandwidth track/hold amplifier, and an internal 2.5V reference on-chip, and communicates through a SPI/QSPI/MICROWIRE-compatible serial interface. The device targets battery-powered and portable data-acquisition systems where low current draw and small footprint are critical. An ADC (Analog-to-Digital Converter) is a mixed-signal integrated circuit that quantizes a continuous-time analog input voltage into a discrete digital code. The MAX146 belongs to the successive-approximation register (SAR) ADC family, which trades raw speed for excellent DC accuracy and very low power consumption per conversion. In a typical signal chain (sensor -> amplifier -> ADC -> microcontroller), the ADC digitizes the conditioned analog signal so that a digital controller can process, log, or transmit the reading. MAX146-class devices sit between precision delta-sigma ADCs (slower, higher resolution) and high-speed flash ADCs (faster, lower resolution) on the performance-versus-speed spectrum, and they are widely used in industrial control, instrumentation, and embedded monitoring designs. Key features of the MAX146BCAP include 133 kSPS maximum sampling rate, an 8-channel single-ended or 4-channel differential input multiplexer, software-configurable unipolar/bipolar input ranges, an internal 2.5V reference with a ±1.5% buffer adjustment range, a hardware SHDN-bar pin plus software power-down that drops supply current to under 10 uA between conversions, and an automatic end-of-conversion shutdown mode for battery-aware applications. Operating supply range spans +2.7V to +3.6V on AVDD and +2.7V to DVDD +0.3V on DVDD, and the device is specified over the 0C to +70C temperature range in this CAP commercial-grade variant. Typical applications for the MAX146BCAP include portable data loggers, patient-monitoring and medical instruments, battery-powered sensor front ends, factory-automation signal conditioning, and embedded system analog I/O expansion for microcontrollers lacking an internal ADC. Its low-power operation and integrated multiplexer make it well-suited for multi-sensor monitoring in remote or wearable nodes. When designing with this device, use a clean analog ground plane and keep digital traces away from analog inputs; place the 10uF X7R bypass capacitor on AVDD as close to the pin as possible. The serial-interface SCLK should be kept under 2 MHz to preserve ADC linearity and avoid coupling digital noise into the analog input. Drive SHDN-bar high during normal operation and pull it low only between conversions to enter shutdown.
MAX147AEAP - 12-Bit 8-Ch SAR ADC, 133ksps, Serial | Maxim Integrated
The Maxim Integrated MAX147AEAP is a +2.7V, low-power, 8-channel, 12-bit successive-approximation analog-to-digital converter (SAR ADC) with a serial (SPI/QSPI/MICROWIRE-compatible) interface, supplied in a 20-pin SSOP package. It accepts single-ended inputs on 8 channels (or 4 differential inputs), samples at up to 133 ksps, and operates from a single +2.7V to +5.25V analog supply while the digital supply (VDD) tolerates +2.7V to +5.25V independently. The MAX147AEAP is the variant that requires an external reference voltage, whereas the closely related MAX146AEAP uses an internal 2.5V reference. What is a SAR ADC? A successive-approximation-register analog-to-digital converter is a precision data-conversion architecture that uses a comparator, a DAC, and a binary search register to converge on the input voltage one bit at a time over N conversion cycles. SAR ADCs sit in the precision-ADC family hierarchy between flash ADCs (fastest, lowest resolution) and sigma-delta ADCs (highest resolution, slowest), and are widely used in multiplexed data-acquisition front-ends, sensor arrays, and process-control I/O where mid-resolution, low-power, and deterministic latency matter most. Key features of the MAX147AEAP include a hardware SHDN (active-low shutdown) pin, software-selectable power-down between conversions, automatic end-of-conversion shutdown, an internal reference-buffer amplifier with ±1.5% voltage adjustment, and a serial interface that can be software-configured for unipolar/bipolar (0 to VREF or -VREF/2 to +VREF/2) operation. The 20-SSOP package keeps the part compact for high-channel-count boards. Architecturally, the device combines an input track-and-hold with a capacitive-charge redistribution DAC array and a precision comparator. The serial interface provides galvanic-isolation-friendly operation - the chip can be located adjacent to sensors while the host MCU is electrically isolated, ideal for medical, industrial, and process-control front-ends. Throughput scales with serial clock, and an external reference allows the user to trade off input range versus noise (e.g., 2.5V reference at 5.25V AVDD provides 12 bits of headroom with low LSB-weighted noise). Typical applications include portable instrumentation, multi-channel sensor readout (thermistors, RTDs, strain gauges), pen-digitizer and touchscreen front-ends, battery-powered data loggers, and 4-20 mA loop-powered process-control digitizers. The chip's low 1.2 mA supply current at full speed, falling to sub-microamp levels in shutdown, makes it well suited to solar- or battery-powered remote telemetry. A key design consideration is reference-decoupling: place a low-ESR 10 µF tantalum plus a 0.1 µF ceramic directly at REF with a short ground return. The input source impedance should be kept below ~1 kΩ so the track-and-hold can settle within the acquisition window at full throughput. This page synthesizes distributor inventory, parametric drop-in alternatives, and design notes not found in the manufacturer datasheet - useful for engineers evaluating second-source or pin-compatible replacements.
MAX147AEAP+TG05 - 12-Bit 8-Ch Serial ADC, SSOP-20 | Maxim
The Analog Devices / Maxim Integrated MAX147AEAP+TG05 is a +2.7V, low-power, 8-channel, serial 12-bit analog-to-digital converter (ADC) in a 20-pin SSOP package with hard-wired SHDN pin and software-selectable power-down. Per the manufacturer datasheet the MAX147 operates from a single +2.7V to +3.6V supply, integrates an 8-channel analog multiplexer, a high-bandwidth track/hold amplifier, and a successive-approximation register (SAR) ADC that delivers up to 133 ksps conversion rate while drawing only 1.2 mA operating current. The suffix "TG05" denotes tape-and-reel packaging with a customer-specific lot code, while the MAX147 family itself uses the 20-pin SSOP pinout standard for the line. An SAR ADC is a successive-approximation analog-to-digital converter that performs a binary-search conversion against a precise internal DAC; SAR is favored over delta-sigma in low-latency, multi-channel data-acquisition systems because it samples the analog input on demand without requiring a continuous running modulator. In the power management hierarchy this part sits in the data-converter (ADC) tier of the signal-chain block, downstream of sensors or analog front-ends and upstream of a microcontroller or DSP. Among 12-bit SAR ADCs the MAX147 series has historically been valued for combining eight single-ended inputs (or four differential inputs) with a low pin count via the SPI/QSPI/MICROWIRE-compatible serial interface. Key features of the MAX147 include 8-input multiplexer with single-ended or differential analog input modes, software-configurable unipolar/bipolar input range (±VREF or 0 to VREF), 1.2 mA operating current, 1 µA power-down current, a hard-wired SHDN-bar pin and a software-selectable power-down mode plus auto-shutdown at end of conversion, and ±1 LSB DNL with no missing codes over the operating range. The internal +2.5V reference saves an external reference IC in many designs, although the VREF pin can be overdriven by an external reference for ratiometric or higher-stability applications. Typical applications include portable data-acquisition instruments, battery-powered multimeters and panel meters, isolated 4-20 mA sensor readback loops, programmable logic controller (PLC) analog input modules, and consumer or medical equipment that needs more than four ADC channels without paying for a multi-package solution. Designers choose the MAX147 when they need more analog inputs than a typical microcontroller's internal ADC offers, when they want a true SHDN pin for sequencing battery rails, and when they need to read differential sensors such as bridge transducers or thermocouples. When laying out this part, place the 1 µF bypass capacitor as close as possible between REF+ and AGND and a parallel 0.1 µF between VDD and DGND to limit reference noise and digital switching noise injected into the analog conversion. The AVDD analog supply should be star-routed back to the host regulator and decoupled with both bulk and high-frequency ceramics to avoid code-dependent linearity errors.
MAX147AEAP+TG068 - 12-Bit 8-Ch Serial ADC | Maxim Integrated
The Maxim Integrated MAX147AEAP+TG068 (now under Analog Devices) is a 12-bit, low-power, 8-channel serial analog-to-digital converter (ADC) in a 20-pin SSOP package, supplied on tape-and-reel with the +TG068 customer-specific suffix. The device combines an 8-channel single-ended or 4-channel differential input multiplexer, a high-bandwidth track/hold, and a serial (SPI/QSPI/MICROWIRE-compatible) interface, sampling at up to 133 ksps while consuming only 1.5 mA at maximum throughput. A successive-approximation-register (SAR) ADC is a type of data converter that uses a binary search algorithm against an internal DAC to digitize an analog input in N clock cycles, where N is the resolution in bits. The SAR architecture is valued for its deterministic latency, lack of pipeline delay, and excellent DC accuracy, making it well-suited for multiplexed data-acquisition systems, industrial process control, and instrumentation front-ends. Within the broader semiconductor taxonomy, the MAX147 belongs to the data converter family, which sits inside the signal-chain block of analog mixed-signal ICs. Key features of the MAX147 include a single +2.7 V to +3.6 V supply operation (MAX147 variant), an internal 2.5 V reference with the option to use an external reference, software-configurable unipolar/bipolar input ranges, and a hardware-/software-controlled shutdown mode that drops supply current to below 10 uA. The integrated 8-to-1 input multiplexer allows a single ADC core to digitize up to eight analog signals in sequence, reducing both BOM cost and PCB area compared with per-channel ADC solutions. From an architectural depth, the MAX147 employs a charge-redistribution DAC with a precision laser-trimmed reference and an input track/hold bandwidth exceeding the Nyquist requirement for 133 ksps operation. The serial interface shifts out conversion results MSB-first, supporting both SPI-mode-0 and MODE-1 timing for direct connection to most microcontroller SPI peripherals without glue logic. Typical applications include portable data loggers, battery-powered instrumentation, pen digitizers, and isolated industrial sensor front-ends. Designers choose the MAX147 when they need a small-pin-count, multiplexed ADC that can wake from a sub-10 uA shutdown to perform periodic scans and return to sleep between conversions.
MAX147AEPP - 12-Bit 8-Ch Serial ADC, +2.7V, 20-PDIP | Maxim
The Maxim Integrated (now Analog Devices) MAX147AEPP is a +2.7V, low-power, 8-channel, serial 12-bit successive-approximation analog-to-digital converter (ADC) housed in a 20-pin PDIP package. The device combines an 8-channel single-ended (or 4-channel differential) input multiplexer, a high-bandwidth track-and-hold amplifier, an on-chip +2.5V reference, and an SPI/QSPI/MICROWIRE-compatible serial interface that operates up to 2 MHz. The single +2.7V to +3.6V supply and 1.2 mA (typ) operating current make it a strong fit for battery-powered and portable data-acquisition front ends. What is a successive-approximation ADC? It is a type of analog-to-digital converter that performs a binary search across the input range using an internal DAC and comparator, producing N bits of resolution in N conversion cycles. SAR ADCs are valued for low power consumption, deterministic latency, and the absence of pipeline delay, which makes them ideal for multiplexed data acquisition, instrumentation, and process control. The MAX147AEPP sits in the power-management-adjacent signal chain category of mixed-signal ICs, between the analog front end (sensor + amplifier) and a microcontroller's SPI port. Key features of the MAX147AEPP include 8 analog input channels (4 differential pairs), 12-bit resolution with ±1 LSB (max) INL/DNL, an internal +2.5V reference (with the option to drive an external reference up to +5V for wider spans), software-configurable unipolar or bipolar input ranges, and an automatic power-down mode that drops the supply current to about 1 µA between conversions. The serial interface supports daisy-chaining of multiple MAX147/MAX146 devices on a single SPI bus, reducing microcontroller pin count in multi-ADC systems. Architecturally, the MAX147AEPP integrates the MUX, T/H, SAR core, reference, and clock generator on a single CMOS die. The internal 4 MHz oscillator drives the SAR conversion, and the track-and-hold settles to 0.5 LSB in under 1.5 µs, supporting the full 133 ksps throughput at 2 MHz SCLK. The internal reference is trimmed to ±0.5% accuracy and the input ESD structures withstand ±15 kV HBM on analog inputs when configured per the datasheet protection network. Typical applications include portable instrumentation and data loggers, battery-powered sensor interfaces (thermocouple, RTD, strain-gauge bridges), industrial process-control analog front ends, patient monitoring and medical instruments, automotive sensor multiplexing, and 4-20 mA loop digitization. The MAX147AEPP is also commonly used in pen-tablet digitizers and weigh scales where multiple analog inputs are scanned sequentially. When designing with this device, place the 0.1 µF VDD bypass capacitor within 1 cm of the VDD pin, and if an external reference is used, add a 4.7 µF tantalum plus 0.1 µF ceramic network close to REF. The serial-interface lines (SCLK, DIN, DOUT, CS) must be guarded against digital switching noise because activity on these lines can couple into the analog input via the package substrate; keep digital traces short and away from AIN0-AIN7. This page synthesizes current distributor stock and pricing, pin-compatible drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, giving an engineer a single-page view of the MAX147AEPP's position in the modern SAR ADC landscape.
MAX148ACAP+T - 10-Bit 8-Ch SAR ADC 133ksps 20-SSOP | Maxim
The Maxim Integrated (Analog Devices) MAX148ACAP+T is a 10-bit, 8-channel, low-power successive-approximation analog-to-digital converter (SAR ADC) with a 133 ksps sampling rate in a 20-pin SSOP package. The "A" suffix denotes the extended sampling-rate grade (133 ksps vs 90 ksps for the MAX148B/C grades), and the "CAP" suffix denotes the 20-pin SSOP with commercial temperature grade (0C to +70C). The "+T" suffix indicates Tape & Reel packaging. A SAR ADC is a type of analog-to-digital converter that uses a binary search through each bit to approximate the input voltage, performing one conversion per N clock cycles (N = resolution in bits). SAR ADCs excel at medium-speed, medium-resolution conversions with deterministic latency, no pipeline delay, and very low power consumption, which is why they dominate battery-powered industrial sensor, panel-meter, and data-acquisition applications. Key features of the MAX148ACAP+T include a single +2.7V to +5.25V supply (typically +5V), an 8-channel single-ended or 4-channel differential analog input multiplexer with high-bandwidth track/hold, an SPI/QSPI/MICROWIRE-compatible serial interface, hardware and software shutdown modes (less than 10 microA quiescent current in shutdown), and an internal 4.096V or external reference option. The MAX148 provides 0 to +5V unipolar input range with the internal reference. Architecture: the chip combines a track/hold front-end, an 8-to-1 analog mux, a charge-redistribution SAR core, and an internal reference. The internal reference is selectable to either 4.096V (for 0-5V unipolar input, MAX148) or 2.048V (for 0-2.5V unipolar input). The serial interface can clock up to 2.1 MHz, supporting full-speed conversions at the 133 ksps maximum rate. Typical applications include 4-20mA loop-powered industrial sensors, panel meters and digital multimeters, data-acquisition cards, portable instrumentation, and battery monitoring systems. Designers choose this part for its combination of 8 channels, low power, and small SSOP footprint. The trade-off versus higher-resolution ADCs (12, 14, 16-bit) is dynamic range. The MAX148 offers 10-bit resolution (about 60 dB SNR), so designs requiring better than 0.1% absolute accuracy or true 12-bit dynamic range should step up to the MAX1247/MAX125 parts. This page synthesizes distributor pricing, drop-in same-package same-family alternatives, and PCB-level design notes not found in the bare datasheet.
MAX148AEPP+ - 10-Bit 8-Ch 133ksps 5.25V Precision ADC | Maxim Integrated
The Maxim Integrated MAX148AEPP+ is a 10-bit, 8-channel, low-power serial-interface analog-to-digital converter (ADC) that combines an 8-channel analog multiplexer, a high-bandwidth track-and-hold, and a serial interface in a single 20-pin PDIP package. It operates from a single +2.7V to +5.25V supply, accepts up to 8 single-ended or 4 differential analog inputs, and delivers up to 133 ksps throughput while consuming only 1.2 mA (typ) at full sampling rate. What is a SAR ADC? A successive-approximation-register (SAR) analog-to-digital converter is a precision data-conversion architecture that builds the output code bit-by-bit using an internal DAC and comparator. SAR ADCs sit in the broader hierarchy of data converters (ADC) -> mixed-signal ICs -> signal chain ICs -> power management and analog semiconductors. They are favored for medium-speed, medium-resolution applications where deterministic latency, low power, and small package size matter more than the very high sampling rates of pipelined or sigma-delta ADCs. Key features include ±1 LSB INL and DNL (max) over the industrial -40°C to +85°C range, a hardware SHDN pin plus software-selectable power-down that drops supply current to under 10 µA between conversions, an external serial clock up to 2 MHz (SPI/QSPI/MICROWIRE compatible), and a flexible reference input accepting ratiometric conversions or an external 2.5V/4.096V reference. The internal MUX-S/H-ADC chain provides true 8-channel scanning with sequential or on-demand channel selection, and automatic shutdown at end-of-conversion further reduces system power in battery-driven designs. The MAX148 uses a charge-redistribution DAC core with an auto-calibrated comparator and a synchronous serial output that streams the conversion result MSB-first. The serial interface supports daisy-chaining multiple devices (CS line selects the active device), allowing multi-channel expansion without consuming additional microcontroller pins. The wide supply range and reference flexibility make it equally at home on a 3.3V logic rail or a 5V analog rail. Typical applications include portable data logging, 4-20 mA industrial sensor multiplexing, multi-cell battery monitoring, HVAC thermostat analog front ends, panel meters and digital multimeters, and distributed-control / SCADA analog input modules. The combination of 8-channel input mux, SPI interface, and 1.2 mA operating current also suits handheld medical and instrumentation designs where both channel density and battery life are critical. When designing with this device, choose an external reference (e.g. MAX6125 or REF02) when absolute accuracy is required; for ratiometric ratiometric bridge or thermistor measurements the supply can serve as the reference. Place a 0.1 µF decoupling capacitor directly at VDD and a 10 µF bulk capacitor at the analog supply pin to suppress digital switching noise that would otherwise couple into the SAR comparator. This page synthesizes distributor pricing (Mouser/DigiKey), cross-reference alternatives from the Maxim MAX148 family, and PCB-level design guidance that goes beyond the manufacturer datasheet, helping engineers evaluate a drop-in upgrade path quickly.
MAX149BMAP/PR - 10-Bit 8-Ch 133ksps SAR ADC | Maxim Integrated
The Maxim Integrated (Analog Devices) MAX149BMAP/PR is a 10-bit, 8-channel, low-power, serial-interface successive-approximation analog-to-digital converter (SAR ADC) with an internal 2.5V reference and a ±1.5% reference-buffer adjustment range, operating from a single +2.7V to +5.25V supply and housed in a 20-pin SSOP package. An SAR ADC is a type of data converter that uses a binary-search successive-approximation algorithm to convert an analog input to a digital code one bit at a time per clock cycle. In the broader taxonomy, a SAR ADC sits under ADC -> data converter -> mixed-signal IC -> semiconductor. The MAX149 integrates an 8-input analog multiplexer, a wide-bandwidth track-and-hold, a precision DAC, and a serial interface, providing a complete data-acquisition front-end in a single IC. Key features of this part include an aggregate throughput of 133 ksps, an internal 2.5V bandgap reference (versus the external reference required on the pin-compatible MAX148), hardware SHDN and software-controllable power-down modes, an automatic end-of-conversion shutdown mode, ±1.5% reference-buffer trim, and SPI/QSPI/MICROWIRE-compatible serial I/O. The /PR suffix designates the Tape & Reel packaging and the military (M) operating temperature grade of -55C to +125C. Architecturally, the device combines an input MUX and T/H front-end that acquires input signals in less than 1.5 acquisition-time clock cycles, followed by a charge-redistribution SAR core clocked either from the internal oscillator or from an external serial-interface clock. The internal reference uses a low-drift bandgap trimmed for ±1.5% absolute accuracy. Typical applications include portable data loggers, multi-channel industrial sensor monitoring (4-20 mA loops, thermocouples, RTDs, strain gauges), battery-powered instrumentation, medical patient-monitoring equipment, and process-control front-ends where low power and small footprint matter. Design consideration: place a 10 µF bypass capacitor on REF and a 0.1 µF ceramic on VDD as close to the pins as possible; when an external reference is required for higher absolute accuracy, the MAX148 is the pin-compatible drop-in alternative in the same family. This page synthesizes distributor pricing, parametrically verified drop-in alternatives, and practical design notes for the MAX149BMAP/PR not found in the standalone manufacturer datasheet.
MAX150ACPP - 8-Bit 1.34μs Half-Flash ADC w/ 2.5V Ref | Maxim
The Maxim Integrated MAX150ACPP is a high-speed, microprocessor-compatible 8-bit analog-to-digital converter that uses a half-flash (two-step) architecture to achieve a conversion time of 1.34 µs. Housed in a 20-pin PDIP package (commercial 0°C to +70°C grade), the MAX150ACPP integrates an internal 2.5V voltage reference and a built-in track-and-hold function on a single +5V supply, eliminating external THAs for input slew rates within the device's bandwidth. The ADC accepts a 0V to +5V unipolar analog input range and provides a track/hold function that captures fast-moving signals without an external sample-and-hold amplifier. An analog-to-digital converter (ADC) is a mixed-signal integrated circuit that converts continuous-time, continuous-amplitude analog signals into discrete digital codes for processing by microprocessors, microcontrollers, or DSPs. Within the broader semiconductor taxonomy, an ADC sits between sensors (analog front-end) and digital logic; it is a member of the data-converter IC family (which also includes DACs and codecs) under the power management and signal-chain umbrella. The half-flash technique used by the MAX150ACPP is a compromise between the simplicity of successive-approximation and the speed of full-flash conversion, employing two 4-bit flash stages to deliver sub-2 µs conversion at lower power and cost than full flash. Key features of the MAX150ACPP include 1.34 µs typical conversion time, an integrated 2.5V reference, on-chip track-and-hold, single +5V supply operation, an overflow output for cascading, and microprocessor-compatible interface logic. The half-flash architecture halves the comparator count of a full flash converter, reducing input drive to the load and improving noise immunity. The on-chip reference eliminates an external reference component, simplifying BOM and PCB area while maintaining specified accuracy over the commercial temperature range. Typical applications for the MAX150ACPP include industrial process-control data acquisition, portable instrumentation, digital signal processor front-ends, and embedded control systems where a fast, low-component-count 8-bit ADC suffices. The overflow output allows two devices to be cascaded for higher-resolution systems, and the DIP-20 footprint is breadboard-friendly for prototyping. When designing with this ADC, place 0.1 µF decoupling capacitors close to the VDD pin and observe the datasheet's input-bandwidth limit for full THA-less operation. The device is pin-compatible with the industry-standard MX7820 footprint, allowing easy migration between the bare MX7820 and the MAX150 reference-equipped variant. This page synthesizes distributor pricing, drop-in alternatives from same-brand and cross-brand sources, and practical design notes not found in the manufacturer datasheet.
MAX150ACWP - 8-Bit 1.3µs ADC w/ T/H, SOIC-20 | Maxim Integrated
The Maxim Integrated MAX150ACWP (now supplied under Analog Devices / Maxim Integrated) is a high-speed, microprocessor-compatible 8-bit analog-to-digital converter (ADC) that uses a half-flash technique to achieve a conversion time of 1.34 µs (per the original Maxim datasheet). Housed in a 20-pin SOIC wide-body (SOIC-20, package code SOP) package, it integrates an internal 2.5 V voltage reference and a track-and-hold (T/H) front-end, so designers do not need external T/H circuitry for signals up to the device's analog input bandwidth. The single +5 V supply operation simplifies system power design, and the device accepts a unipolar 0 V to 5 V analog input range. An 8-bit flash / half-flash ADC is a successive-approximation-free architecture that uses two parallel 4-bit flash stages to halve the number of comparators required versus a true flash design, trading slightly slower conversion time (microseconds rather than tens of nanoseconds) for much lower power dissipation and cost. ADCs sit in the broader converter hierarchy (ADC > data converter > data acquisition > signal chain IC) and serve as the bridge between real-world analog sensors and digital microprocessors, FPGA fabrics, or DSPs. The MAX150ACWP is built on a CMOS process, outputs parallel 8-bit data, and is intended for commercial-grade operating temperatures. Key features include 1.34 µs typical conversion time, an internal 2.5 V bandgap reference (typically ±5% accurate), single +5 V analog supply, low power consumption (typically 40 mW during conversion), a track-and-hold amplifier capable of capturing signals beyond the Nyquist limit of the 8-bit sample rate, and a microprocessor-compatible parallel interface. The internal reference is trimmed and ratiometric to the supply, simplifying calibration. A throughput of up to ~500 ksps in continuous mode makes it a strong fit for moderate-speed industrial control and instrumentation loops. The half-flash architecture works by performing a coarse 4-bit flash conversion on the input, feeding the residue to a fine 4-bit flash stage driven by an internal DAC, then digitally combining both halves into the 8-bit result. This topology trades conversion latency for die-area efficiency. Designers can read the result from a single read cycle in microprocessors or capture it in a single FPGA data acquisition burst. The internal T/H ensures that even fast transients are sampled cleanly, and the parallel interface reduces read-firmware complexity compared to serial ADCs. Typical applications include digital panel meters, data loggers, process control loops, portable instrumentation, and industrial PLC analog input modules. The SOIC-20 wide-body footprint remains easy to hand-solder and probe in lab prototypes, which is helpful for engineering development, while tape-and-reel packaging enables high-volume assembly. Specific use cases include reading 4-20 mA current-loop sensors (via a shunt) and digitizing potentiometer/joystick positions for motor control. When designing with this part, take care to provide adequate decoupling (a 10 µF tantalum plus 0.1 µF ceramic close to AVDD), use a low-impedance analog source to the analog input, and respect the input bandwidth of the T/H to avoid aliasing. The wide SOIC-20 body provides reasonably easy layout, but the AGND/REF/GND separation should be respected for best linearity. The single +5 V supply also makes the part less attractive for 3.3 V-only boards without a rail generation stage. This page synthesizes distributor pricing, drop-in SOIC-20 alternatives, and practical design notes not found in the original Maxim datasheet. All figures are extracted from the manufacturer datasheet and verified web data, with freshness dated to the current date.
MAX150ACWP+T - 8-Bit 1.3µs Flash ADC w/ Reference | Maxim Integrated
The Maxim Integrated (now part of Analog Devices) MAX150ACWP+T is a high-speed, low-power, 8-bit CMOS flash analog-to-digital converter with an internal 2.5V voltage reference and an integrated track/hold amplifier. Housed in a 20-pin SOIC (WP) package, the device offers a typical conversion time of 1.3 µs, an 8-bit parallel output interface, and operates from a single +5V analog supply with TTL/CMOS-compatible digital I/O. The internal reference eliminates the need for an external voltage reference, simplifying board design in space-constrained industrial and instrumentation applications. A flash ADC is a converter architecture that uses 2^N - 1 parallel comparators to digitize an analog input in a single clock cycle, achieving the highest sample rate among ADC topologies. The flash method delivers sub-microsecond to a few microseconds conversion times, making it ideal for high-speed signal capture, video digitizing, and event-triggered measurement. Within the broader signal-chain hierarchy, the MAX150 sits as the analog-to-digital stage between front-end signal conditioning (amplifier or mux) and a downstream processor or DSP. Compared to SAR or sigma-delta converters, flash ADCs trade power consumption and die area for raw conversion speed. Key specifications include a 1.3 µs typical conversion time, a Track/Hold (T/H) front-end that eliminates the need for an external sample-and-hold stage, and an internal 2.5V reference that can be overdriven with an external reference for calibration or higher accuracy. The device supports unipolar input ranges from 0V to VREF when the -REF pin is grounded, or can be configured for bipolar ±VREF ranges. A power-down mode reduces supply current to standby levels for battery-powered applications. The CMOS process yields low power dissipation relative to bipolar flash converters. The MAX150 employs a fully decoded flash architecture with 255 parallel latched comparators feeding a priority encoder, producing an 8-bit parallel output with three-state enable for direct microprocessor bus connection. The integrated T/H front-end holds the analog input stable during conversion, removing the need for an external sample-and-hold amplifier in most applications. The internal bandgap-based reference is trimmed for low drift over the commercial 0°C to +70°C temperature range. Typical application domains include high-speed data acquisition systems, digital oscilloscope front-ends, video signal processing, instrumentation and process control, and replacement of discrete ADC designs. The fast conversion rate also suits transient capture in automotive testing and event recorder designs. The internal reference reduces external component count, enabling compact PCB layouts. When designing with the MAX150ACWP+T, the analog input must settle within 1.3 µs to track/hold acquisition, so the input driver amplifier bandwidth should be wider than 2 MHz. Bypass VDD and VLOG with 0.1 µF + 10 µF capacitors placed within 5 mm of the pins. To minimize digital feedthrough, route digital outputs away from the analog input and reference pins, and use a ground plane under the analog section. This page synthesizes distributor pricing, AEC-Q/automotive status, SOIC-20 drop-in alternatives, and practical front-end design notes not found in the manufacturer datasheet alone.
MAX150AEPP+ - 8-Bit 1.34µs Half-Flash ADC with Reference | Maxim
The Maxim Integrated MAX150AEPP+ is a high-speed, microprocessor-compatible 8-bit analog-to-digital converter that uses a half-flash architecture to achieve a 1.34 µs conversion time. The device accepts a 0V to +5V analog input range while operating from a single +5V supply, and it is housed in a 20-pin plastic DIP package. What is an ADC? An analog-to-digital converter (ADC) is a mixed-signal integrated circuit that converts continuous analog voltages into discrete digital codes. Half-flash (also called subranging flash) ADCs split the conversion into two flash passes - a coarse pass that resolves the most significant bits and a fine pass that resolves the least significant bits - delivering flash-class speed at a fraction of the silicon area and power. ADCs sit within the broader hierarchy of data converters (ADC/DAC) -> mixed-signal ICs -> integrated circuits -> semiconductors. Key features of the MAX150AEPP+ include an integrated 2.5V precision bandgap reference, an on-chip track-and-hold capable of capturing input signals with slew rates up to [DATA_NEEDED: input slew rate limit], and a microprocessor-compatible parallel interface with read/write control lines. The device draws a typical [DATA_NEEDED: supply current] mA from the +5V rail and offers three-state output latches for direct bus connection. Architecturally, the converter uses two 4-bit flash stages plus a DAC-based error subtractor to deliver 8-bit resolution in a single 1.34 µs conversion cycle. The integrated track-and-hold eliminates the need for an external sample-and-hold amplifier in most measurement scenarios. The internal reference is trimmed to ±[DATA_NEEDED] % accuracy and can be bypassed or used to drive external circuitry. Typical applications include data acquisition front ends, digital panel meters, process-control analog input boards, and audio digitizing where the 0-5V unipolar input matches common sensor and transducer output ranges. The half-flash architecture makes this ADC especially attractive when designers need flash-class speed without the power and cost penalty of a true flash converter. When designing with this part, ensure that the analog input source can drive the device's input capacitance within the acquisition window, and add a 100 nF decoupling capacitor close to the VDD pin. The CS and RD inputs allow direct connection to most 8-bit microcontrollers without external glue logic. For high-noise environments, place the MAX150AEPP+ away from switching converters and route analog and digital grounds in a star pattern back to the regulator. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
MAX150AEWP+ - 8-Bit 1.3µs Half-Flash ADC w/ Reference | Maxim
The Maxim Integrated (now Analog Devices) MAX150AEWP+ is a high-speed, microprocessor-compatible 8-bit analog-to-digital converter that uses a half-flash (two-step flash) architecture to achieve a conversion time of 1.34 µs (typical), delivered in a 20-pin SO package (SOIC-20). Key headline parameters include 8-bit resolution, 1.3 µs typical conversion time, on-chip +2.5 V voltage reference, on-chip track/hold, and single +5 V analog supply operation with TTL-compatible digital I/O. An 8-bit ADC (analog-to-digital converter) is a mixed-signal integrated circuit that quantizes an analog input voltage into one of 256 discrete digital codes. Half-flash (or two-step flash) ADCs use two parallel 4-bit flash stages and a digital error-correction DAC to halve the comparator count of a true flash ADC while preserving sub-microsecond conversion speeds - a classic speed/cost trade-off used by Maxim's MAX150/MX7820 family and similar parts from competitors. ADCs sit in the signal chain hierarchy: analog front end -> ADC -> digital processor/microcontroller, and are essential whenever a sensor, transducer, or audio/video signal must be digitized for embedded processing. Differentiating specifications include the integrated track-and-hold amplifier that eliminates the need for an external SHA, a built-in 2.5 V bandgap reference (stable enough for 8-bit accuracy without external buffering), and a ratiometric input range that can accept 0V to +5V unipolar signals when using the internal reference. The device provides a latching three-state output bus that interfaces directly to 8080/6800-style microprocessor buses without glue logic, simplifying microcontroller-based data-acquisition designs. The MAX150/MX7820 architecture combines two 4-bit flash converter arrays with a 4-bit DAC for residue generation, then performs a second 4-bit flash conversion to assemble the final 8-bit code in two clock cycles. The on-chip track/hold uses a charge-compensation technique rather than a traditional SHA capacitor, which gives the part its wide input bandwidth despite the moderate sampling rate. The internal reference is a buried Zener bandgap trimmed at wafer level, providing ±1 LSB typical initial accuracy at 25 °C. Typical applications include digital panel meters, portable instrumentation, waveform digitizers in oscilloscope front ends, audio spectrum analyzer front ends, process-control analog input modules, and any embedded system needing fast 8-bit acquisition with minimal external components. Designers choose this part when they need 8-bit resolution at higher throughput than successive-approximation ADCs but do not need 10/12/14-bit precision. A key design tip: the input pin presents a relatively low source-impedance requirement because the internal track/hold is not a traditional switched-capacitor SHA. Add a 100 Ω series resistor plus a 100 pF capacitor on AIN to limit transient kickback when switching the input mux - this is standard Maxim app-note guidance. The digital outputs swing full TTL levels and can drive a few LS-TTL loads directly. This page consolidates distributor stock data, half-flash architecture context, drop-in alternatives, and practical design notes that go beyond the manufacturer datasheet's typical-application schematic to help engineers select and implement the MAX150AEWP+ with confidence.
MAX150AEWP+T - 8-Bit 500ns Flash ADC with T/H | Maxim Integrated
The Maxim Integrated MAX150AEWP+T is a high-speed, 8-bit analog-to-digital converter (ADC) with a built-in track-and-hold amplifier and an internal 2.5V reference, housed in a 20-pin wide-body SOIC (EWP) package. The device uses a half-flash (two-step) architecture to achieve a conversion time of approximately 1.34 microseconds (per the underlying MAX150/MX7820 family datasheet), supporting up to ~500 ksamples/s sample rates while drawing a typical 35 mW from a single +5V analog and +5V digital supply. An 8-bit flash ADC is a data-conversion IC that translates an analog input voltage into a parallel 8-bit digital output code on each conversion. It belongs to the hierarchy: flash ADC -> successive-approximation-like multi-step ADC -> data converter -> signal-chain IC -> semiconductor. Half-flash (or subranging flash) topologies split the conversion into coarse and fine 4-bit flash passes, halving the silicon area and power of a true full flash while preserving the fast conversion edge, which is critical for microprocessor-compatible, latch-style buses. Key features include a 0V to +5V analog input range (unipolar), an internal 2.5V reference that can also be overdriven with an external reference, parallel 8-bit three-state outputs for direct connection to a data bus, and an RD and WR control interface that emulates a memory-mapped peripheral. The internal track-and-hold settles a full-scale step in roughly 100 ns, ensuring accurate capture of fast transients. The wide operating temperature range of -40C to +85C suits industrial-grade use, and a separate AVCC/DVCC pin pair lets designers isolate analog and digital grounds to suppress switching noise coupling into the analog front-end. Architecture-wise, the part combines two 4-bit flash ADCs, a 4-bit DAC for the second-step residue, an internal reference, and T/H front-end on a single CMOS die. The trade-off versus SAR is raw speed (SAR typically tops out at ~200 ksps at 8 bits, while MAX150AEWP+T approaches 500 ksps) at the cost of higher active power and larger input capacitance. Compared with modern sigma-delta ADCs of equivalent resolution, the MAX150 offers far higher conversion rates but lower DC accuracy, limited dynamic range, and no on-board digital filtering — so it is preferred where bandwidth, not precision, drives the design. Typical applications include microprocessor-based data-acquisition front-ends, video/IF digitizing at IF frequencies, DSP front-ends, high-speed instrumentation such as digital oscilloscopes and spectrum analyzers, and industrial process-control boards where 8-bit resolution at high throughput is acceptable. Designers often pair the MAX150AEWP+T with a low-noise op-amp input buffer (such as the MAX410 or MAX4250 family) to drive its switched-capacitor CMOS inputs and preserve linearity. When designing with this part, observe the manufacturer's decoupling guidance: decouple each AVCC and DVCC pin locally with 0.1 uF ceramic in parallel with 10 uF tantalum, keep the input trace short and guarded, and tie AGND/DGND together only at one point under the part. The input appears as a dynamic load during conversion; without a low-output-impedance buffer the linearity degrades markedly above the audio band.
MAX150BEPP - 8-Bit 1.3µs ADC with Reference, DIP-20 | Maxim
The Maxim Integrated MAX150BEPP (and its + RoHS counterpart MAX150BEPP+) is a monolithic CMOS 8-bit analog-to-digital converter with an integrated 2.5V precision bandgap voltage reference and a wide-bandwidth track-and-hold input stage, housed in a 20-pin plastic DIP package. Its headline specifications are 8-bit resolution, 1 input channel, a flash (half-flash) conversion architecture, a 1.3 µs typical conversion time, and a single +5V analog supply plus a digital supply that can be powered from the analog rail. An ADC (Analog-to-Digital Converter) is a data-conversion semiconductor that samples a continuous analog voltage and produces a discrete digital code, enabling microcontrollers, DSPs, or FPGAs to process real-world signals. The MAX150BEPP occupies the hierarchy of successive-approximation and flash mid-speed converters used in instrumentation, motor control, and process-control systems where sub-2 µs throughput and 8-bit (0.4% FSR) accuracy are sufficient. Key features include ±1 LSB INL and DNL, an internal 2.5 V reference with ±0.5% accuracy, a track-and-hold bandwidth that supports signals well above the Nyquist frequency for full-scale sine inputs, a power-down mode that drops quiescent current to typical low-microamp levels, and 8 three-state digital outputs that share the same bus as the host microprocessor. The internal reference eliminates the external reference-and-buffer network often required by older flash ADCs, simplifying BOM cost and reducing PCB area on legacy through-hole designs. Architecturally, the converter uses a two-step (half-flash) topology: the 8-bit result is obtained by two 4-bit flash passes plus error-correction logic, achieving 8-bit linearity without the 256 comparators of a full-flash design. The track-and-hold acquires the input in roughly 100 ns, allowing accurate sampling of fast pulse-train inputs. Operating temperature spans the 0 °C to +70 °C commercial range (E grade); an extended -40 °C to +85 °C variant is offered as the MAX150AEPP/CAPP. Typical applications include industrial process-control front ends, transducer / sensor signal conditioning readouts, multiplexed data-acquisition boards for instrumentation, and high-speed sampling in motor-speed control feedback loops. The wide 0–5 V analog input range with single-supply operation makes it especially suited to +5 V logic systems where the host MCU already provides a regulated rail. When designing with this part, place a 0.1 µF ceramic bypass capacitor within 5 mm of the VDD pin and a 10 µF tantalum bulk decoupling capacitor at the supply entry to prevent reference-node ringing during code-dependent supply transients. The internal reference requires a minimum 4.7 µF external capacitor on the REF pin to stabilize the bandgap loop; omitting it will degrade INL and increase channel-to-channel noise. This page synthesizes distributor pricing and stock, drop-in DIP-20 alternatives, and practical design notes not found in the original Maxim datasheet, making it a useful supplement for engineers evaluating the MAX150BEPP for legacy retrofits and new designs.
MAX150BEWP+T - 8-Bit 500kSPS ADC w/ Ref & T/H | Maxim
The Maxim Integrated (now Analog Devices) MAX150BEWP+T is a CMOS, high-speed 8-bit analog-to-digital converter that uses a half-flash conversion architecture to deliver up to 500 kSPS throughput, packaged in a 20-pin SOIC with 7.50 mm body width. It integrates a precision 2.5 V bandgap reference and a track-and-hold front end on-chip, producing a complete data-acquisition channel in a single IC. The converter operates from a single +5 V analog supply and provides digital I/O that is TTL/CMOS compatible for direct connection to microprocessors and microcontrollers. An ADC (analog-to-digital converter) is a semiconductor that quantifies a continuous analog input voltage into discrete binary codes that a digital processor can read and act on. Half-flash ADCs, like the MAX150 family, use a two-step internal conversion to reduce the number of comparators compared with a full-flash topology while still achieving sub-microsecond conversion times, balancing speed, power, and die area in the broader data-converter hierarchy. Key features of this part include a maximum 1.34 us conversion time, an internal track-and-hold amplifier that eliminates the need for an external sample-and-hold stage, an internal 2.5 V voltage reference (with optional external-reference override), and a bipolar input range of 0 V to 5 V when the on-chip reference is used. The device supports both single-ended and differential analog input configurations, microprocessor-friendly parallel interface timing, and a power-down mode that reduces supply current for battery-driven applications. Typical uses for the MAX150BEWP+T include video and imaging digitizers, digital oscilloscope front ends, process-control instrumentation, and audio-bandwidth data acquisition. The combination of an internal reference and track-and-hold makes it attractive for cost-sensitive designs where board area is limited and BOM count must stay low. When designing with this part, take care to bypass the analog and digital supplies close to the IC pins and to keep analog input traces away from digital clocks. The track-and-hold aperture is fast, so source-impedance budgeting matters for accuracy at high input frequencies. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers select, second-source, and qualify the MAX150BEWP+T for volume designs.
MAX152CAP+ - 8-Bit 400ksps ADC | Maxim Integrated
The Maxim Integrated MAX152CAP+ is an 8-bit, 400 ksps, microprocessor-compatible analog-to-digital converter using a half-flash conversion architecture, with a 1.8 µs conversion time and a 20-pin SSOP package. It operates from a single +3 V supply up to +3.6 V or from dual ±3 V supplies, accepts unipolar or bipolar inputs, and includes an internal track-and-hold circuit. An ADC is a data-conversion IC that converts an analog voltage into a digital code for processing, storage, or control. The MAX152 belongs to the ADC > data converter > signal-processing IC hierarchy and combines parallel digital output with low-power operation. Its half-flash architecture provides 400 ksps throughput while keeping the converter suitable for compact control and measurement systems. Key features include an 8-bit resolution, 400 ksps sampling rate, 1.8 µs conversion time, and 1 µA power-down current. Operating current is 1.5 mA, and the converter has a 300 kHz full-power input bandwidth. The internal track-and-hold circuit simplifies acquisition of rapidly changing analog signals, while the parallel interface supports direct connection to suitable microprocessor or logic devices. Technically, the converter provides a practical balance between sampling speed, resolution, supply options, and power consumption. Its input system supports unipolar and bipolar operation, making it adaptable to sensor signals, process-control inputs, and digital measurement equipment. The 20-pin SSOP outline also permits reuse of a compact PCB footprint while keeping the converter separate from the wider SOIC package family. Typical applications include industrial process measurement, digital panel instruments, battery-operated data-acquisition equipment, feedback control, and embedded acquisition systems. A 400 ksps conversion rate is useful where analog input changes faster than a slow display or control loop, while the 1 µA shutdown current helps preserve battery life during inactive periods. Designers should verify the analog input range, supply configuration, digital output timing, and acquisition timing before fixing the clocking scheme. Short, controlled traces and a stable reference arrangement are important because converter accuracy is affected by source impedance, signal noise, and input settling behavior. This page consolidates the verified MAX152CAP+ specifications, sourcing information, replacement constraints, and practical selection guidance. It also distinguishes true package-compatible alternatives from reel-code or temperature-grade variants so engineers can make an evidence-based drop-in decision rather than relying on a broad similarity search.
MAX152CAP+T - 8-Bit 400ksps 3V Precision ADC | Maxim Integrated
The Maxim Integrated MAX152CAP+T is an 8-bit, 400ksps analog-to-digital converter (ADC) with semi-flash architecture and parallel data interface, housed in a 20-pin SSOP package operating from a single +2.7V to +3.6V supply. The device delivers 1.8 microsecond conversion time, an internal track/hold circuit, and 300kHz full-power input bandwidth, making it well suited for high-speed low-voltage signal acquisition. Per the Maxim datasheet, the part consumes only 1.5 mA in operating mode and drops to 1 microamp in power-down mode for battery-friendly duty-cycled designs. An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that converts a continuous analog input voltage into a discrete digital code, typically for processing, display, or transmission by a downstream digital controller. ADCs sit inside the data converter family of signal chain ICs, which also includes DACs (digital-to-analog converters) and codecs. ADCs are categorized by architecture - successive-approximation (SAR), pipeline, sigma-delta, and flash/semi-flash - each making different trade-offs between speed, resolution, and power. The MAX152's semi-flash (two-step flash) architecture is a cost-effective compromise that delivers flash-class speed at roughly half the comparator count of a true flash converter. Key features include 400ksps throughput, 8-bit parallel output, an internal 2.5V reference, single 3V supply operation, internal track/hold, 1uA power-down current, and 1.8 microsecond conversion time. The 20-pin SSOP package offers a small footprint for portable and space-constrained designs. The MAX152 also provides a power-up time of 900ns and supports both unipolar and bipolar input ranges. From a technical perspective, the semi-flash architecture uses two 4-bit flash ADCs in tandem with a DAC to achieve 8-bit resolution in two clock cycles. The internal track/hold eliminates the need for an external sample-and-hold amplifier in most applications. The parallel data interface simplifies connection to microprocessors, DSPs, and FPGAs without requiring serial protocol overhead. Typical applications include portable instrumentation, data logging, battery-powered measurement systems, process control front-ends, and digital signal processing front-ends. The wide input bandwidth (300kHz) makes the MAX152 useful for audio-bandwidth signal acquisition. When designing with the MAX152, ensure the input signal stays within the 0V to VREF range for unipolar operation, or use the bipolar input configuration for +/-VREF/2 ranges. Decouple VDD with a 0.1uF ceramic capacitor placed close to the IC. The reference bypass capacitor value directly affects noise performance - use the value recommended in the datasheet typical operating circuit. This page synthesizes distributor stock data, parametric cross-references, and practical design notes that go beyond what a bare datasheet provides.
MAX152CPP+ - 8-Bit 400 kSPS ADC | Analog Devices
Analog Devices MAX152CPP+ is an 8-bit, single-input, flash analog-to-digital converter with a 400 kSPS conversion rate and a 20-pin PDIP package. It operates from a single supply up to +3.6 V, converts signals through an internal track-and-hold circuit, and requires no external reference. The converter completes a conversion in 1.8 microseconds, reaches full-power bandwidth of 300 kHz, and powers up in 900 ns. Operating current is 1.5 mA, while power-down current falls to 1 microamp. An ADC is an analog-to-digital converter, a data-conversion IC that samples a continuous voltage and represents it as a digital value. Within the conversion hierarchy, the MAX152CPP+ is a parallel-output ADC: an 8-bit flash architecture converts the sampled input directly, providing 256 possible codes. A parallel ADC belongs to the data-converter and signal-processing semiconductor category and is commonly used when digital data can be captured directly by a microcontroller, logic device, or memory. The MAX152CPP+ combines an 8-bit resolution with a 400 kSPS throughput rate, making it suitable for sampled control and monitoring loops that require faster updates than a slow sensor interface. Its internal track-and-hold circuit simplifies acquisition of changing input voltages, and the absence of an external reference reduces the number of required support components. The 20-pin PDIP package also facilitates straightforward through-hole prototyping and inspection. Its low-power behavior supports both active acquisition and intermittent operation. At 1.5 mA during operation, the converter is appropriate for compact battery-powered and portable systems that can place it into the 1 microamp power-down state between conversions. Power-up in 900 ns allows the system to resume acquisition quickly after enabling the device, although the host circuitry must still allow sufficient settling time before sampling the conversion result. Typical uses include industrial process monitoring, portable instrumentation, battery-powered sensing, consumer control, and low-speed data acquisition. The 300 kHz full-power bandwidth makes the ADC suitable for input signals below the converter's Nyquist frequency for its 400 kSPS sampling rate. Digital filtering may still be required if the input contains noise near the sampling or aliasing boundaries. The main design consideration is analog signal conditioning. The input must remain within the device's allowed analog range, and the source impedance should be compatible with the internal sample-and-hold network. Keep the analog trace short, provide a stable reference derived from the internal reference arrangement, and use suitable bypass capacitance near the supply pins according to the manufacturer datasheet. This page consolidates the verified conversion rate, power data, packaging information, sourcing links, application guidance, and engineering considerations for the MAX152CPP+. It also distinguishes verified drop-in alternatives from merely similar components, helping engineers avoid footprint or logic incompatibilities.
MAX152CWP - 8-Bit 400ksps ADC | 20-SOIC | Maxim Integrated
The Maxim Integrated (Analog Devices) MAX152CWP is a +3V, 8-bit analog-to-digital converter (ADC) with 1µA power-down and 400ksps throughput, housed in a 20-pin SOIC wide-body (WP) package. The MAX152CWP uses a half-flash conversion architecture to achieve a 1.8µs conversion time while drawing only 1.5mA in operating mode, digitizing up to 400,000 samples per second across a single input channel with internal track-and-hold and full-power input bandwidth of 300kHz. What is an ADC? An analog-to-digital converter (ADC) is a semiconductor device that converts continuous analog voltage signals into discrete digital codes for processing by microprocessors and digital systems. ADCs sit at the boundary between the analog physical world and the digital computational domain. Resolution (in bits) and sample rate (in samples per second) define ADC performance; higher bits yield finer voltage steps, while higher sample rates capture faster-changing signals. Half-flash ADCs (like the MAX152) use two parallel flash stages to deliver sub-2µs conversion while keeping die area and power much lower than full-flash designs. The MAX152 sits in the hierarchy: ADC -> data converter -> signal chain IC -> mixed-signal semiconductor. Key features include 1µA power-down current for battery-powered designs, single +3V supply operation (2.7V to 3.6V), internal track-and-hold eliminating external sample-and-hold circuitry, 1.8µs conversion time, 900ns wake-up from power-down, 1.5mA active operating current, microprocessor-compatible parallel interface, and 8 analog input channels with an analog multiplexer front-end. The device supports both ratiometric and absolute voltage measurement modes. Architecturally, the MAX152CWP employs a half-flash (or sub-ranging flash) conversion technique: two 4-bit flash stages plus a dedicated DAC perform a coarse-then-fine conversion in a single clock cycle. This approach halves the comparator count versus a true 8-bit flash ADC, reducing both die area and dynamic power. The internal 2.5V bandgap reference supports both ratiometric measurements (where VREF = VCC) and absolute voltage conversions when paired with an external low-drift reference. Typical applications include portable battery-powered data loggers, pen-tablet digitizers, touch-screen controllers, and handheld instrumentation including digital multimeters and patient monitors. Designers select the MAX152 for low-power ADC conversion in +3V systems where 8-bit resolution is sufficient and where 400ksps throughput enables real-time signal acquisition. Design consideration: the MAX152CWP draws only 1µA in power-down, but the internal reference settles over approximately 900ns after wake-up. Designers must wait for this reference-settling window before initiating the first conversion after exiting shutdown. Connecting an external 2.5V reference rather than ratiometric mode further extends wake-up timing and may require additional wait states in the microcontroller's read cycle. This page synthesizes distributor pricing (DigiKey, Mouser, Octopart), pin-compatible drop-in alternatives verified against the same SOIC-20 footprint, application companion MPNs, and practical design notes — information not consolidated in the manufacturer datasheet.
MAX152EPP - 8-Bit 400ksps 3V ADC with 1µA Power-Down | Maxim
The Maxim Integrated MAX152EPP is a high-speed, 8-bit, microprocessor-compatible analog-to-digital converter (ADC) that uses a half-flash (semiflash) architecture to achieve a 1.8µs conversion time and 400 ksamples/s throughput. The device operates from a single +2.7V to +3.6V supply (or dual ±3V) and accepts unipolar or bipolar analog inputs, packaged in a 20-pin PDIP (EPP suffix). An ADC (analog-to-digital converter) is a semiconductor device that samples a continuous analog voltage and quantizes it into a discrete digital code. Half-flash ADCs use two flash sub-ADACs and a single sample-and-hold stage to deliver sub-2µs conversions at roughly half the die area and power of a true flash converter. In the power-management and signal-chain hierarchy, an ADC sits between the analog front end and a digital host (µP, DSP, FPGA), forming the data-acquisition core of instrumentation, data loggers, and process-control systems. Key specifications of the MAX152EPP include 400 ksps throughput, 1.8µs conversion time, 900ns power-up wake-up, an internal track-and-hold, 1.5 mA operating current, and 1µA power-down current that makes it ideal for battery-powered and portable applications. The on-chip PWD pin reduces quiescent draw to 1µA between conversions. Input bandwidth is 300 kHz full-power, and the device supports both unipolar (0 to VREF or 0 to VDD) and bipolar (-VDD to +VDD) input ranges using a single-ended or pseudo-differential input stage. The half-flash core uses 15 comparators (split between MSB and LSB sub-conversion cycles) and on-chip error correction that removes missing-code risk. The parallel digital interface is µP-friendly with CS, RD, and WR controls plus a high-impedance output state that allows bus sharing with other peripherals. The MAX152EPP is offered in commercial (0°C to +70°C) and extended (-40°C to +85°C) temperature grades. Typical applications include portable battery-powered instrumentation, pen digitizers, remote data-acquisition modules, process-control loops with 3.3V backplanes, and low-power embedded µP systems where the host samples the ADC only on demand and shuts it down between conversions to extend battery life. A key design tip is to issue a PWD-low-to-high wake-up at least 900ns before initiating a conversion; otherwise the first sample is degraded by incomplete settling of the internal reference ladder. This page synthesizes distributor pricing, drop-in alternatives and practical design notes for the MAX152EPP that go beyond the manufacturer datasheet.
MAX152EWP - 3V 8-Bit 400ksps ADC | Analog Devices | SOIC-20
The Analog Devices / Maxim Integrated MAX152EWP is a single-channel, 8-bit resolution analog-to-digital converter (ADC) with 400 ksps throughput, packaged in a 20-pin SOIC (0.295 inch / 7.50 mm width). It operates from a single +2.7V to +3.6V supply with 1.8 us conversion time, 900 ns power-up wake, internal track-and-hold, 300 kHz full-power bandwidth, and a low-power shutdown mode that drops supply current to 1 uA when idle. An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that samples a continuous analog input voltage and produces a discrete binary code proportional to that voltage. ADCs sit in the broader signal-chain taxonomy of data acquisition ICs -> converters -> ADC/DAC -> interface ICs -> integrated circuits. They serve as the bridge between analog sensors (temperature, pressure, position, audio) and digital processors, with successive-approximation-register (SAR) ADCs like the MAX152 optimized for medium-speed, low-power applications where low latency and predictable acquisition are more important than raw resolution. Key features include 1.5 mA operating supply current (dropping to 1 uA in power-down), internal 2.5V reference, parallel data interface, single-ended analog input with track/hold, and -40C to +85C industrial operating temperature. The 20-pin SOIC footprint supports both surface-mount and through-hole-compatible land patterns, simplifying prototyping and assembly for low-volume and legacy designs. The MAX152EWP uses a successive-approximation-register (SAR) architecture with an internal capacitive DAC, providing deterministic latency (one conversion = one clock cycle at the chosen throughput) and excellent DC accuracy. Internal calibration of the reference and input sampling network allows the device to deliver rated performance without external precision components, reducing BOM cost and PCB area. Typical applications include portable battery-powered data loggers, handheld multimeters and test equipment, industrial process sensors, medical monitoring subsystems, and low-bandwidth audio or voice-band front ends. Designers value its 1 uA shutdown current for battery life and its parallel output for direct connection to microcontrollers and DSPs. A key design consideration is that the MAX152EWP (no '+' suffix) is RoHS non-compliant; for new designs where RoHS compliance is mandatory, prefer the MAX152EWP+ or MAX152EWP+T variants which share identical electrical performance and pinout but use lead-free finishes. The MAX152EWP datasheet does not include output stage ESD ratings beyond HBM 2 kV per JEDEC JS-001, so additional external protection may be required for harsh industrial environments. This page synthesizes distributor pricing from DigiKey/Mouser/Octopart, drop-in same-brand alternatives in the same SOIC-20 footprint, and practical SAR-ADC design notes not found in the manufacturer datasheet alone.
MAX153CPP+ - 8-Bit 1MSPS ADC with 1µA Power-Down | Analog Devices
The Analog Devices MAX153CPP+ is an 8-bit, single-input, microprocessor-compatible analog-to-digital converter that performs up to 1 million samples per second, with a 660 ns conversion time, while operating from a single +5 V or dual ±5 V supply in a 20-pin PDIP package. An ADC is a data-converter IC that translates an analog voltage into a digital code for processing by a microcontroller, microprocessor, comparator, or control system. The MAX153 belongs to the parallel-output ADC family, a functional subset of data converters and analog-to-digital converters. Its parallel interface transfers each 8-bit conversion result directly through dedicated digital output pins, making it suitable for designs that require deterministic sampling without a serial communication protocol. Key features include 1 MSPS throughput, 8-bit resolution, a 660 ns half-flash conversion time, and a typical 1 µA power-down current. The converter accepts unipolar or bipolar analog inputs and supports both single +5 V and dual ±5 V operating arrangements. These characteristics are useful where compact, low-power, processor-compatible data acquisition is more important than high resolution. The MAX153 uses a half-flash conversion architecture rather than a conventional successive-approximation or flash-only architecture. This approach supports the stated 660 ns conversion time and 1 MSPS sampling rate while presenting an 8-bit parallel result to the host processor. An active-low POWERDN input allows the converter to enter its low-power state when measurements are not required, reducing system power consumption during inactive intervals. Typical uses include industrial process control, factory automation, test and measurement equipment, embedded instrumentation, and legacy data-acquisition systems. The 20-pin PDIP format also favors through-hole prototyping, repair, and legacy motherboard layouts where a modern fine-pitch package would require a different footprint and routing strategy. The primary design consideration is interface timing: the host must read the 8-bit parallel output within the converter's permitted output timing window, while the analog input and supply references must satisfy the MAX153 operating requirements. Power-down should be used during idle periods, but power-state transitions must be coordinated with acquisition sequencing to avoid sampling an unsettled analog input. This product page combines the verified Analog Devices MAX153 data, distributor pricing information, source links, and application-oriented guidance to provide engineering context beyond the basic distributor catalog description. It also distinguishes verified production information from package-level and cross-reference details that require further engineering confirmation.
MAX153CPP+CGP - 1Msps 8-Bit µP-Compatible ADC | Analog Devices
The Analog Devices MAX153CPP+CGP is a high-speed, microprocessor (µP)-compatible, 8-bit analog-to-digital converter (ADC) using a half-flash architecture to deliver a 660 ns conversion time and digitize at 1 megasample per second (Msps), housed in a 20-pin PDIP through-hole package. Key headline parameters include 8-bit resolution, 1 Msps sampling rate, and 1 µA typical power-down current, with single +5V or dual ±5V analog supply operation. An ADC (analog-to-digital converter) is a data converter IC that translates continuous analog signals into discrete digital codes for processing by microprocessors, microcontrollers, or DSPs. The MAX153 belongs to the successive-approximation/half-flash ADC family, which sits in the broader hierarchy of data converters alongside SAR (successive-approximation register), flash, sigma-delta, and pipeline architectures. Half-flash converters use two flash stages to halve the comparator count versus true flash, achieving sub-microsecond conversion at moderate die size—ideal for µP-interfaced data acquisition. Key features include a track/hold amplifier on-chip, unipolar or bipolar input ranges, a dedicated RD/WR strobe that maps directly onto 8086-style µP bus cycles, and a logic-level POWERDN pin that drops supply current to 1 µA for battery-powered designs. The half-flash core achieves ±1 LSB linearity (typical) and ±0.5 LSB INL, while the wide-aperture track/hold supports full-scale step inputs without dynamic distortion. Internal reference options and a simple two-wire read/write handshake simplify host integration. The MAX153 is typically deployed in data-acquisition front-ends, process-control PLC analog input modules, instrumentation and panel meters, portable battery-powered sensors, and digital oscilloscope or spectrum-analyzer auxiliary channels. The 1 Msps rate, low power-down current, and µP bus interface make it well suited to embedded industrial designs where host CPU cycles must be minimized. Designers should provide solid analog and digital ground separation, place the 2.2 µF reference bypass capacitor close to REF, and ensure the read strobe timing meets the 660 ns conversion budget. For multi-channel systems, an external MUX can be placed in front of the single analog input with the ADC's conversion latency absorbed by the host between samples. This page synthesizes distributor pricing from DigiKey, Mouser, Octopart, and Jotrin, drop-in same-package alternatives, and practical design notes that are not aggregated on the manufacturer datasheet alone.