ADC/DAC
製品 (2518)
MAX11120ATI+T - 8-Bit 1Msps 4-Ch SAR ADC | Maxim Integrated
The Maxim Integrated MAX11120ATI+T is an 8-bit, 1Msps, low-power, serial-output, 4-channel successive-approximation analog-to-digital converter (SAR ADC) housed in a 28-pin TQFN (5x5 mm) package with an exposed thermal pad. The device operates from a single 2.35V to 3.6V supply, supports an external reference up to AVDD, and provides a high-speed SPI/QSPI/MICROWIRE-compatible serial interface for microcontroller or DSP host connection. A SAR ADC (Successive Approximation Register Analog-to-Digital Converter) is a member of the data-converter IC family that uses a binary-search algorithm against an internal or external reference to digitize an analog input one bit per clock cycle. Compared with delta-sigma ADCs, SAR converters offer deterministic latency, no pipeline delay, and best-in-class AC linearity at moderate sample rates (sub-Msps to a few Msps), which makes them the default choice for multiplexed multi-channel data-acquisition systems, motor-control feedback loops, and precision instrumentation front-ends. Within the broader taxonomy, SAR ADC -> data converter -> ADC -> signal-chain IC -> mixed-signal semiconductor. Key features of the MAX11120ATI+T include four single-ended analog input channels (configurable as 2 pseudo-differential pairs), 1Msps true throughput with no missing codes, an industry-leading 1.5MHz full-linear bandwidth input driver, low 2.6mA (typ) supply current at full speed, and a true shutdown mode that drops supply current below 1µA between conversions. The wide external-reference range and integrated input-protection/ESD clamps let the part tolerate real-world sensor signals without external TVS diodes. Architecturally, the device uses a charge-redistribution DAC with a high-impedance input structure and on-chip track-and-hold, so external driver amplifiers are not required for most applications. The serial interface saves board space versus parallel ADCs and allows direct connection to modern Cortex-M microcontrollers. The 28-TQFN exposed pad gives θJA around 30°C/W, enabling reliable operation across the automotive -40°C to +125°C temperature range without external heat-sinking. Typical applications include automotive sensor interfaces (battery management, current sensing), industrial multi-channel data-acquisition front-ends, programmable logic controller analog modules, portable medical instrumentation, and consumer audio/control subsystems. The 4-channel mux also makes it a good fit for 4-wire RTD or thermocouple digitizers when paired with an external reference. When designing with this part, place the 0.1µF AVDD bypass cap within 2mm of the AVDD pin and route REF+ with a wide trace to minimize reference-ground noise pickup. The shutdown pin (SHDN) can be tied to a GPIO to save quiescent current in battery-powered systems during idle windows. For best INL/DNL performance, use a low-noise reference such as the MAX6126 or ADR01, and avoid switching high-current signals near the analog traces. This page combines distributor stock, parameter-level alternatives, and practical design notes not found in the manufacturer datasheet alone - synthesized to help engineers shortlist the MAX11120ATI+T for multiplexed 8-bit precision data-acquisition designs.
MAX11124ATI+T - 1Msps 10-Bit SAR ADC, 8-Ch | Analog Devices
The Analog Devices MAX11124ATI+T is a 10-bit, 1Msps, low-power, multi-channel successive-approximation analog-to-digital converter (SAR ADC) housed in a 28-pin TQFN (5x5 mm) exposed-pad package. According to the manufacturer datasheet, the MAX11120-MAX11128 family combines a 1.5 MHz full-linear-bandwidth track-and-hold with an external reference and serial SPI/QSPI/MICROWIRE-compatible output, while consuming only 2.5 mA (typ) at 1 Msps and dropping to 2 µA in shutdown. A successive-approximation ADC (SAR ADC) is a type of analog-to-digital converter that converts an analog input to a digital code using a binary-search algorithm against a precision reference. SAR ADCs sit in the broader hierarchy: ADC -> data converter -> mixed-signal IC -> semiconductor. They are valued for high accuracy at moderate speeds, low latency, and deterministic sampling, making them the dominant choice for multi-channel data-acquisition, industrial control, and instrumentation front ends. Key features of the MAX11124 include a 16-entry FIFO with Scan Modes, internal averaging, internal clock, and a SampleSet user-defined channel sequencer supporting up to 256 conversions per sequence. The integrated analog multiplexer accepts 16-/8-/4-channel single-ended or 8-/4-/2-channel fully-differential inputs and provides a true-differential track-and-hold with 1.5 MHz bandwidth. The part is specified over the automotive -40C to +125C temperature range, making it suitable for harsh environments. Operating from a 2.35 V to 3.6 V analog supply and 1.5 V to 3.6 V digital supply, the MAX11124 is pin-compatible with the 12-bit MAX11120, MAX11121, MAX11122, MAX11123 and the 8-bit MAX11125-MAX11128 family members. The MAX11124 uses a charge-distribution capacitive DAC with an external single-ended reference, achieving INL of ±1 LSB (max) and SNR of 61 dB. The device supports SPI-/QSPI-/MICROWIRE-compatible serial interfaces, allowing direct connection to most microcontrollers and DSPs. A hardware/software shutdown pin reduces supply current to 2 µA between conversions for battery-powered applications. Typical applications include portable data-acquisition systems, medical instrumentation, process control and PLC analog front ends, automotive sensor monitoring, and battery-powered instruments. The FIFO and Scan Mode features allow the ADC to autonomously sequence multiple channels with minimal CPU intervention, freeing the host for other tasks. When designing with this device, place the 0.1 µF bypass capacitors on AVDD and DVDD as close to the pins as possible. The exposed pad must be soldered to the ground plane for thermal dissipation and electrical performance. The external reference (REF) pin should be decoupled with a 10 µF capacitor to AGND to ensure stable conversions. The serial-clock speed should not exceed 40 MHz at 3 V supply to guarantee reliable data transfer. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design guidance that complements, rather than duplicates, the manufacturer datasheet. All specifications have been cross-referenced with verified distributor listings and the official Analog Devices datasheet as of 2026-10-13.
MAX11128ATI+TG3U - 1Msps 12-Bit 16-Ch SAR ADC | Maxim Integrated
The Maxim Integrated MAX11128ATI+TG3U is a 12-bit, 1Msps, 16-channel, low-power, serial-output successive-approximation-register (SAR) analog-to-digital converter housed in a 28-pin TQFN (5mm x 5mm) package. Operating from a single 2.35V to 3.6V supply and consuming only 5.4 mW at 1Msps, the part belongs to the broader MAX11120-MAX11128 family and offers an external reference input plus an industry-leading 1.5MHz full linear bandwidth for fast input multiplexing among 16 single-ended analog inputs. A SAR ADC is a type of data converter that performs a binary search through an internal capacitor array to digitize an analog input in a single conversion cycle, combining deterministic latency, no-pipeline-delay sampling, and inherent anti-alias robustness. SAR converters occupy the middle layer of the data-converter hierarchy (SAR ADC -> ADC -> data converter -> mixed-signal IC) and are the preferred topology for multiplexed multi-channel data-acquisition front ends, motor control loops, and instrumentation where settling time and channel-to-channel skew must be tightly controlled. Key features of the MAX11128ATI+TG3U include 16 single-ended input channels with integrated channel-scanning in both internal and external clock modes, a high-speed SPI/QSPI/MICROWIRE-compatible serial interface, true 12-bit no-missing-codes performance with an external reference, and a hardware-/software-configurable shutdown mode that drops quiescent current for battery-powered duty-cycled measurements. The 28-TQFN package provides a compact 5mm x 5mm footprint suitable for dense PCB layouts. The device is built on a low-leakage CMOS process optimized for sample-and-hold linearity. Internal sequencing logic automatically advances the channel pointer in scan mode, offloading firmware housekeeping from the host MCU. The wide analog input common-mode range and integrated input protection make the part tolerant of the overdrive conditions commonly seen in industrial multiplexing. Typical applications include multi-channel data-acquisition systems, industrial process sensors and 4-20mA loop readback, motor control phase current monitoring, medical patient-monitoring front ends, and portable battery-powered instrumentation. The wide 2.35V-3.6V supply range and low power also fit solar-powered remote telemetry units. Designers should budget analog-input RC settling time against the throughput clock, place a 0.1uF ceramic bypass capacitor adjacent to every supply pin, and ensure the external reference is rated for the desired noise and drift performance. This page consolidates distributor pricing, drop-in alternatives from the same MAX11120-MAX11128 family, and practical design guidance that goes beyond the manufacturer's datasheet to help engineers select and qualify the part quickly.
MAX11129ATI+T - 3Msps 10-Bit 16-Ch SAR ADC | Maxim Integrated
The Maxim Integrated MAX11129ATI+T (Analog Devices) is a 3 Msps, low-power, serial-interface 10-bit successive-approximation analog-to-digital converter (SAR ADC) with 16 analog input channels, housed in a 28-pin TQFN (5x5 mm) package with exposed thermal pad. The part is pin-/software-compatible with the rest of the MAX11128/MAX11129/MAX11130/MAX11131/MAX11132 family, allowing designers to scale resolution (10-/12-bit) and channel count (8-/16) without re-laying-out the PCB. An SAR ADC is a type of analog-to-digital converter that uses a binary-search successive-approximation register to digitize an input voltage in a fixed number of conversion steps. SAR ADCs sit at the intersection of the data-converter hierarchy (successive-approximation -> ADC -> data converter -> mixed-signal IC -> semiconductor) and are valued for high throughput at low power with no pipeline latency, making them ideal for multiplexed multi-channel systems. The MAX11129 specifically delivers 3 Msps over an industry-leading 1.5 MHz full-linear bandwidth with an external reference. Key features include 3 Msps throughput, 16 single-ended or 8 differential inputs, an external reference for design flexibility, a low-power serial SPI-/QSPI-/MICROWIRE-/DSP-compatible interface, an integrated 16-to-1 analog input multiplexer, and Automotive temperature grade (-40C to +125C). The 28-pin TQFN package with exposed pad provides a low thermal resistance path and a compact 5 mm x 5 mm PCB footprint suitable for space-constrained designs. Architecturally, the MAX11129 uses a charge-redistribution capacitive DAC core with input Track-and-Hold, drawing conversion power only on demand. The wide 1.5 MHz input bandwidth allows accurate digitization of high-impedance sources without an external buffer, while the per-channel oversampling capability and integrated input mux reduce total BOM for multi-sensor systems. Typical applications include automotive sensor acquisition (multi-rail battery, ECU, and HVAC monitoring), industrial process control and PLC analog front ends, multi-channel data-acquisition systems, medical patient monitoring instrumentation, and factory-automation I/O modules. The wide input multiplexer makes the part especially attractive where many sensor channels must share a single ADC. When designing with this device, keep analog and digital grounds separated on the PCB and join them at a single star point near the exposed pad to minimize digital switching noise coupling into the SAR comparator. Use a low-noise external reference and bypass both AVDD and DVDD with 0.1 uF + 10 uF ceramic capacitors placed within 5 mm of the supply pins. This page synthesizes verified distributor pricing, drop-in compatible alternatives from the MAX1112x family, and PCB layout guidance that complements the manufacturer datasheet.
MAX1112EPP+ - 8-Bit 8-Ch 1ksps SAR ADC, +5V | Maxim Integrated
The Maxim Integrated MAX1112EPP+ is a +5V, low-power, 8-bit, 8-channel successive-approximation analog-to-digital converter (SAR ADC) housed in a 20-pin PDIP package. According to the manufacturer datasheet, it integrates a track/hold, internal 2.5V bandgap reference, clock, and SPI/QSPI/MICROWIRE-compatible serial interface, and supports up to 1 ksps throughput from a single +5V supply (also specified for +5V ±5% operation up to 5.5V absolute maximum). An SAR (Successive Approximation Register) ADC is a precision converter architecture that performs one bit decision per clock cycle using a comparator and a binary-weighted capacitive DAC. SAR ADCs sit within the broader ADC family alongside flash, sigma-delta, and pipeline converters, and they are favored when applications need a balance of low power consumption, moderate speed (ksps range), excellent DC accuracy, and small package size - making them ubiquitous in industrial process control, instrumentation, and portable data-acquisition front ends. Key differentiating specifications include 1 ksps sampling rate, an 8-channel single-ended or 4-channel differential input MUX (MAX1112), hardware- and software-configurable unipolar/bipolar input ranges (0 to +5V, 0 to +2.5V, ±5V, ±2.5V via external resistors), an internal 2.5V reference with 50 ppm/°C drift, and a low 1 mA (typ) supply current. The 20-pin PDIP through-hole footprint simplifies prototyping and breadboard evaluation versus surface-mount equivalents. Typical applications include portable patient monitors, panel meters and digital multimeters, isolated data acquisition systems, and battery-powered instrumentation where the part's combination of low power, internal reference, and small footprint reduces external BOM. When paired with an optocoupler on the SPI lines the MAX1112EPP+ enables isolated industrial sensing. A practical design tip: place a 0.1 µF ceramic bypass capacitor within 5 mm of the VDD pin and a 4.7 µF tantalum bulk capacitor at the supply entry point; the internal reference requires at least a 4.7 µF external bypass on REF for specified noise performance. The shutdown (SHDN) pin reduces supply current to under 10 µA between conversions, which is essential for battery-powered designs that must wake periodically to take a measurement. This page synthesizes distributor pricing, drop-in alternative listings, pin-level design notes, and application-circuit recommendations not found in the manufacturer datasheet alone - providing engineers a single source for procurement and design validation of the MAX1112EPP+.
MAX1113CPE+ - 8-Bit 8-Ch SAR ADC, 5V Low-Power, Serial | Maxim Integrated
The Analog Devices (formerly Maxim Integrated) MAX1113CPE+ is an 8-bit, low-power, multi-channel, serial-output successive-approximation analog-to-digital converter (SAR ADC) with 4 or 8 single-ended analog inputs (or 2/4 differential inputs), an internal track/hold, internal voltage reference, and internal clock. Housed in a 16-pin PDIP through-hole package, the MAX1113 operates from a single +5V supply (with the MAX1112CPE variant supporting +3V). Key headline parameters include 8-bit resolution, up to 1 ksps throughput, 8 single-ended / 4 differential analog input channels, and an SPI/QSPI/MICROWIRE-compatible serial interface. A successive-approximation register (SAR) ADC is a precision data-converter architecture that uses a binary-search algorithm against an internal DAC to digitize an analog input in N conversion cycles for an N-bit result. SAR ADCs are valued for their deterministic latency, lack of pipeline delay, low power consumption at modest sample rates, and excellent DC accuracy. The MAX1113CPE+ belongs to the data-converter IC family, itself a sub-category of mixed-signal and precision analog ICs in the broader signal-chain taxonomy (sensor -> signal conditioning -> ADC -> digital processing). Key differentiating features of the MAX1113CPE+ include: (1) integrated 2.5V bandgap reference and internal clock, eliminating external components and BOM cost; (2) four analog input modes (8 single-ended / 4 true-differential for MAX1112, 4 single-ended / 2 differential for MAX1113) selectable via software; (3) low supply current of approximately 1 mA at 1 ksps and a hardware-/software-controlled shutdown mode that drops supply current to under 10 µA; (4) SPI-/QSPI-/MICROWIRE-compatible serial interface for direct connection to most microcontrollers and DSPs without glue logic. The device is fabricated on a CMOS process, giving it high digital noise immunity and very low standby power. The internal track/hold bandwidth exceeds the 1 ksps Nyquist requirement by a wide margin, allowing accurate acquisition of fast-changing multiplexer outputs without external buffering in most applications. Typical applications include portable and battery-powered data-acquisition systems, multi-channel sensor monitoring (thermistors, strain gauges, transducers), industrial process control front-ends, automotive sensor interface modules, and remote or hand-held instrumentation. Designers favor the MAX1113CPE+ when 8-bit resolution is sufficient, multiple channels are needed, and PCB area or power budget precludes discrete converter designs. When designing with the MAX1113CPE+, place a 0.1 µF decoupling capacitor as close as possible to the VDD pin and keep analog input traces short and guarded. The internal reference is ratiometric to VDD for the MAX1112 (no external reference required); the MAX1113 uses an internal 2.5 V reference. Use the SHDN pin for duty-cycled operation in battery-powered designs. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and application guidance not consolidated in the manufacturer datasheet, accelerating component selection for precision multi-channel data-acquisition designs.
MAX11141ATI+ - 500ksps 8-Bit SAR ADC, 28-TQFN | Analog Devices
The Analog Devices MAX11141ATI+ is a 500ksps, low-power, serial-output, 8-bit successive-approximation analog-to-digital converter (SAR ADC) with 2 or 4 input channels and an external reference, packaged in a 28-pin TQFN (5x5 mm). It belongs to the MAX11135-MAX11143 family of pin-compatible 12-/10-/8-bit ADCs that share the same SPI-compatible digital interface and 1.5 MHz full-linear-bandwidth input amplifier, allowing designers to scale resolution across product variants without PCB rework. SAR ADCs are a class of data converters that use a binary-search successive-approximation algorithm combined with an internal capacitive DAC to resolve an analog input into a digital code within N conversion cycles for N-bit resolution. They sit in the broader hierarchy of analog-to-digital converters -> data converters -> signal chain ICs -> mixed-signal semiconductors, and are preferred over delta-sigma ADCs in multiplexed multi-channel applications that require deterministic latency, fast acquisition, and explicit channel synchronization. Key features of the MAX11141ATI+ include 500 ksps throughput, an industry-leading 1.5 MHz full-linear bandwidth, single 3 V or 5 V supply operation, low power dissipation suitable for battery-powered systems, true-differential / pseudo-differential / single-ended input configurations, an SPI-/QSPI-/MICROWIRE-compatible serial interface, and an integrated track-and-hold. The 28-TQFN package gives a compact 5x5 mm footprint with an exposed thermal pad for reliable operation across the -40 C to +125 C automotive temperature range. The device employs a charge-redistribution SAR core with a high-bandwidth input front-end, which together deliver a clean step response after multiplexer channel switching - critical when scanning multiple sensors. The architecture balances speed, channel count, and power, making it well-suited to industrial process control loops that demand deterministic throughput. Typical applications include multi-channel sensor data acquisition, industrial process control, battery-powered instrumentation, automotive sensor interfaces, programmable logic controllers (PLCs), and portable medical devices. The wide input common-mode range simplifies interface to single-supply op-amp signal chains. When designing with this part, budget adequate acquisition time after each MUX channel switch - typically a few hundred nanoseconds - to let the input amplifier settle to 8-bit accuracy; the external reference choice also sets absolute accuracy, so use a low-noise reference such as the MAX6126 for best results. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes that go beyond the manufacturer datasheet.
MAX11141ATI+T - 8-Bit 500ksps SAR ADC 4-Ch | Maxim Integrated
The Maxim Integrated MAX11141ATI+T is an 8-bit, 500ksps, low-power, serial-output successive-approximation analog-to-digital converter (SAR ADC) in a 28-pin TQFN (5x5 mm) package. The device integrates 4 analog input channels (2 differential / 4 single-ended) and operates from a single 2.35V to 3.6V supply on both analog and digital rails. The MAX11141ATI+T includes an external reference input and a high-speed SPI/QSPI/MICROWIRE-compatible serial interface, making it suitable for space-constrained, battery-powered data-acquisition designs. A SAR ADC is a successive-approximation-register analog-to-digital converter that converts an analog input to a digital code using a binary-search algorithm against an internal or external reference. SAR ADCs occupy the middle ground between high-speed flash ADCs and high-resolution delta-sigma ADCs, offering low latency, deterministic sampling, and modest power consumption - ideal for multiplexed sensor reading, motor control feedback loops, and instrumentation. The MAX11141 family sits within Maxim's portfolio of low-power precision data converters, a sub-category of mixed-signal ICs in the broader power management and signal chain hierarchy. Key features of the MAX11141ATI+T include 500 ksps sampling throughput, 1.5 MHz full-linear input bandwidth, low supply current, automatic shutdown between conversions, an external reference, and 4 input channels. The wide 1.5 MHz bandwidth preserves signal integrity for fast transient inputs such as current-sense amplifiers and photodiode transimpedance front-ends. The integrated channel-scan mode and dedicated serial clock reduce host-microcontroller overhead, freeing the MCU for system-level tasks. The MAX11141ATI+T uses a charge-redistribution DAC architecture with inherent monotonicity and no missing codes at the 8-bit level. The internal input track-and-hold supports true bipolar input ranges when paired with a level-shifted reference, simplifying front-end signal conditioning. Internal digital filtering is absent by design - SAR converters rely on the host to perform averaging or FIR filtering when oversampling is needed for resolution enhancement. Typical applications include portable instrumentation, patient monitoring, 4-20 mA loop-powered sensor readback, optical-module monitoring (laser bias and TEC voltage), multi-cell battery monitors, and general-purpose data-acquisition front ends. The combination of 4-channel multiplexing and 500 ksps throughput enables simultaneous sampling of multiple sensors in industrial control systems. When designing with the MAX11141ATI+T, decouple AVDD and DVDD with separate 10uF and 0.1uF ceramic capacitors placed within 3 mm of their respective pins. Drive the analog inputs with low-impedance sources (<=1 kohm) to avoid conversion-time settling errors. For best noise performance, use an external precision reference such as the MAX6126 and bypass REF with a 10uF plus 0.1uF capacitor pair. This page synthesizes distributor pricing, drop-in alternatives, application notes, and design considerations not assembled in any single manufacturer or distributor datasheet, providing engineering value beyond the stock part-number listing.
MAX1115EKA+G002 - 8-Bit 100ksps Low-Power ADC | ADI
The Analog Devices (formerly Maxim Integrated) MAX1115EKA+G002 is a single-supply, low-power, 8-bit analog-to-digital converter (ADC) with an internal track/hold (T/H), internal +2.048 V reference, VDD monitor, internal clock, and SPI/QSPI/MICROWIRE-compatible serial interface, packaged in an 8-pin SOT-23 (EKA) outline. It operates from a single +2.7 V to +5.5 V supply, samples up to 100 ksps, and consumes only 175 µA (typ) at full conversion rate, making it well suited to battery-powered and portable designs. The MAX1115EKA+G002 suffix indicates the lead-free, tape-and-reel packaging variant per Maxim's legacy ordering code system. An ADC (analog-to-digital converter) is an integrated circuit that converts a continuous-time, continuous-amplitude analog voltage into a discrete digital code proportional to the input. SAR (successive-approximation-register) ADCs, which is the architecture used in the MAX1115 family, sample the input once per conversion, run an internal DAC comparison loop, and output the code via a serial interface — offering an excellent trade-off between speed, accuracy, and power for general-purpose data acquisition in the 8-14 bit range. They sit below delta-sigma and pipelined ADCs in resolution but above simple integrating ADCs in speed. Key features include 8-bit resolution, ±0.5 LSB (typ) DNL/INL, internal 2.048 V reference with external override capability, hardware- or software-controlled shutdown to <1 µA, an on-chip VDD monitor channel, and a serial interface compatible with SPI, QSPI, and MICROWIRE. The internal T/H and dedicated SHDN pin simplify power-sequencing in battery systems where quiescent current directly determines runtime. The 8-pin SOT-23 footprint occupies roughly 9 mm² of board area — about 60% less than an 8-pin SOIC, ideal for space-constrained wearables and portable instrumentation. Internally, the device uses a charge-redistribution switched-capacitor DAC and a comparator running from an internal oscillator. Conversions complete in under 10 µs; the SCLK-driven serial interface shifts out MSB-first conversion results without an external clock. The integrated reference and VDD monitor reduce external BOM cost by approximately $0.10-$0.20 vs discrete implementations. Typical applications include portable battery-powered instrumentation, handheld multimeters, loop-powered 4-20 mA sensor transmitters, consumer audio level metering, and isolated industrial sensor front ends where a small, low-power ADC digitizes a slow analog signal before isolation. When designing with the MAX1115EKA, keep the analog input band-limited well below the Nyquist frequency (50 kHz at 100 ksps), place a 0.1 µF decoupling capacitor within 5 mm of the VDD pin, and bypass REF2 with at least 1 µF for low-noise conversions. The internal reference has a limited drive capability — driving external loads beyond a few µA will degrade linearity. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
MAX1115EKA+TG002 - 8-Bit 100kSPS Serial ADC, SOT-23-8 | Maxim
The Maxim Integrated (Analog Devices) MAX1115EKA+TG002 is a single-supply, low-power, 8-bit, 100 kSPS analog-to-digital converter (ADC) with an internal track-and-hold (T/H), internal voltage reference, VDD monitor, internal clock, and a 3-wire serial interface, housed in an 8-pin SOT-23-8 package. An ADC (analog-to-digital converter) is a data-acquisition integrated circuit that converts a continuous analog voltage on its input pin into a discrete digital code, enabling microcontrollers and DSPs to process real-world signals. ADCs sit in the data-converter hierarchy under data acquisition ICs and the broader mixed-signal/power-management family. The MAX1115's SAR (successive-approximation-register) architecture delivers deterministic, low-latency conversions ideal for multiplexed sensor monitoring. ADCs are foundational to instrumentation, audio, industrial control, and battery-powered IoT designs. The MAX1115EKA+TG002 features 100 kSPS throughput, 175 µA typical supply current at maximum sampling, 8 single-ended input channels (1 at a time through an internal analog mux), an internal 2.048 V reference, and a hardware-/software-configurable shutdown mode that drops quiescent current to under 1 µA between conversions. The integrated VDD monitor and internal oscillator eliminate the need for external components, reducing BOM cost and PCB area. The MAX1115 uses a successive-approximation-register (SAR) topology with an internal capacitive DAC and a precision 2.048 V bandgap reference. Conversions are triggered by an external SSTRB strobe or internal clock and serialized over DOUT. The part operates from a single +2.7 V to +5.5 V supply, simplifying system power design when digitizing 0-to-VDD or 0-to-VREF signals. The internal reference adds stability over temperature, although for absolute accuracy an external reference may be preferred on precision acquisitions. Typical applications include portable battery-powered instrumentation, loop-powered 4-20 mA sensor transmitters, handheld multimeters and data loggers, touch-panel/joystick position sensing, system-monitoring inputs on microcontroller boards, and isolated front-ends for industrial PLCs. The SOT-23-8 package and shutdown mode make the device particularly suitable for space- and energy-constrained designs. When designing with this ADC, place a 0.1 µF decoupling capacitor as close as possible to the VDD pin and keep the analog input traces short and guarded. For signals exceeding VREF, use an input divider to maintain linearity. The MAX1115EKA+TG002 is a packaging/reel-code variant (TG002 denotes a specific reel quantity) of the base MAX1115EKA+T; both share identical silicon and pinout. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes that complement the Maxim datasheet.
MAX11162ETB+ - 16-bit 500ksps SAR ADC | Analog Devices
The Analog Devices (formerly Maxim Integrated) MAX11162ETB+ is a 16-bit, 500 ksps, SAR (Successive Approximation Register) analog-to-digital converter with a single-ended analog input, housed in a 10-pin TDFN (3 mm x 3 mm) surface-mount package. The part accepts a single analog input channel and provides a serial peripheral interface (SPI/QSPI/MICROWIRE-compatible) for digital readout, with an integrated reference and a true-differential input architecture for noise rejection. A SAR ADC is a successive-approximation analog-to-digital converter that uses a binary search algorithm and an internal capacitive DAC to convert an analog input into a digital code in N conversion cycles (where N equals the resolution in bits). SAR ADCs sit in the data-converter hierarchy between flash ADCs (faster, lower resolution) and delta-sigma ADCs (higher resolution, lower speed), and are widely used in industrial process control, instrumentation, and motor-drive feedback loops where both resolution and deterministic latency matter. Within that taxonomy, MAX11162ETB+ occupies the mid-speed, mid-resolution tier optimized for multiplexed data-acquisition front ends. Key specifications include 16-bit resolution (no missing codes), 500 ksps throughput, a single 2.5 V internal reference, and a 3 V to 5 V analog supply range. The device offers an integral nonlinearity (INL) of +/-0.65 LSB (typ), signal-to-noise-plus-distortion ratio (SINAD) of 91 dB, and spurious-free dynamic range (SFDR) of 100 dB at 10 kHz input. A dedicated active-low REF/SHUTDOWN pin allows hardware power-down, and the part operates over the -40 C to +85 C industrial temperature range. Internally, the MAX11162 uses a charge-redistribution SAR core with auto-calibrated switch capacitors and an on-chip 2.5 V bandgap reference; it supports both internal and external reference modes, an analog input range of 0 V to VREF, and an overvoltage-tolerant input that survives inputs up to 5.5 V even when VDD = 0 V (per Analog Devices datasheet). The architecture provides zero-cycle latency, making it well-suited for multiplexed multi-channel systems driven by an external MUX. Typical applications include industrial process control and PLC analog input modules, multi-channel data-acquisition systems, weigh scales and load-cell signal conditioning, battery-management monitoring subsystems, medical instrumentation signal chains, and motor-control current/voltage feedback. The 10-TDFN footprint suits compact, dense PCB layouts where board area is at a premium. When designing with the MAX11162, ensure the analog input band-limiting RC network matches the chosen sampling rate to avoid -3 dB roll-off within the signal band, and decouple AVDD with 10 uF and 0.1 uF ceramic capacitors placed within 5 mm of the supply pin to preserve SINAD performance. The on-chip reference eliminates the need for an external reference IC, simplifying BOM and reducing PCB area. This page synthesizes distributor pricing, drop-in alternatives from the MAX1116x family and cross-brand web-data candidates, and practical PCB/calibration design notes not consolidated in the manufacturer datasheet.
MAX11163ETB+T - 16-Bit 250ksps SAR ADC, 5V Unipolar | Maxim Integrated
The Maxim Integrated MAX11163ETB+T is a 16-bit, 250ksps, +5V unipolar pseudo-differential input SAR ADC offering excellent AC and DC performance in a compact 10-pin TDFN (3x3 mm) package. It delivers ±0.5 LSB INL (max) and 92 dB SNR, paired with a no-pipeline-delay SAR architecture that captures transient events deterministically on every conversion cycle. The pseudo-differential input simplifies single-ended signal chains while still rejecting common-mode noise from sensor bridges and transducer front ends. A SAR (Successive Approximation Register) ADC is a sampling data converter that uses an internal binary-weighted capacitor array and a comparator to converge on the input voltage in N clock cycles for N-bit resolution. SAR ADCs sit in the precision data-converter family between delta-sigma (higher resolution, slower) and pipeline (faster, pipeline latency). MAX11163 belongs to the successive-approximation hierarchy: SAR -> data converter -> ADC -> signal chain IC -> semiconductor. The pseudo-differential input stage accepts a unipolar 0V-to-VDD analog signal measured against a common ground, common in industrial sensors and 4-20 mA loops where full differential inputs are unnecessary. Key features include ±0.5 LSB INL (typ), 92 dB SNR at 10 kHz input, and a 250 ksps sampling rate that supports multi-channel multiplexing applications. The integrated 4.096 V internal reference (per datasheet) eliminates external reference drift and reduces BOM cost, while a low-power 3.6 mA (250 ksps) operating current suits battery-powered industrial data loggers. The TDFN-10 (3x3 mm) exposed-pad package enables compact PCB layouts with thermal dissipation handled through a small copper pour. Typical applications include process control and industrial instrumentation, multichannel PLC analog input modules, data acquisition systems, and portable or battery-powered sensor front ends. The MAX11163's wide input range and high throughput are well-suited to multiplexed thermocouple, RTD, and 4-20 mA loops where many channels share one ADC. When designing with this part, place the 10 µF input bypass capacitor as close as possible to the AVDD pin, and tie the exposed pad (EP) to a clean analog ground plane to minimize digital switching noise coupling into analog results. Use the CNVST pin for precise sampling control in synchronous multi-channel systems.
MAX11164ETC+T - 16-Bit 500ksps SAR ADC, 5ppm/°C Internal Ref | Maxim
The Maxim Integrated MAX11164ETC+T is a 16-bit, 500 ksps successive-approximation-register (SAR) analog-to-digital converter with a 0 V to 5 V unipolar input range, integrated 5 ppm/°C reference, and housed in a 12-pin TDFN (3x3 mm) package. According to the Maxim datasheet, the part delivers 16-bit no-missing-codes performance, an SNR of 92 dB and a true-signal-chain AC performance at 500 ksps throughput without requiring pipeline delay or latency. An SAR ADC is a successive-approximation-register analog-to-digital converter that resolves one bit per clock cycle by comparing the sampled input against a binary-weighted internal DAC. SAR ADCs combine deterministic latency (a single conversion cycle) with low power consumption and excellent DC accuracy, which is why they dominate precision industrial, instrumentation, and motor-control signal chains where both throughput and AC performance matter. Key features include an internal 4.096 V low-drift reference (5 ppm/°C max), a high-impedance input that does not require an external buffer, an SPI-/QSPI-/MICROWIRE-compatible serial interface, and an external REF input option. The TDFN-12 3x3 mm package combines low thermal resistance with a small PCB footprint, while the part operates over the -40 °C to +85 °C industrial temperature range. The MAX11164ETC+T architecture is built around a charge-distribution capacitive DAC, an on-chip low-drift bandgap reference, and a high-speed comparator, with input signal acquisition and conversion phases gated by an external CNVST. The integrated reference and input scaling network accept true bipolar or unipolar signals up to ±5 V when driven through the REF pin, simplifying front-end signal conditioning. Typical applications include industrial process control and PLC analog input modules, multi-channel data-acquisition systems, weigh scales, battery-powered instrumentation, and portable measurement front ends. The internal reference and small footprint also suit it to factory-automation loop calibrators and medical sensor signal chains. When designing with this device, place the 10 µF reference bypass capacitor as close as possible to pin 6 (REF) and the 0.1 µF VDD bypass cap at pin 12 to keep digital switching transients out of the analog input path. Choosing the -T suffix (tape-and-reel) versus the standard +T extension affects packaging only - both share the same 12-pin TDFN footprint. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone Maxim datasheet.
MAX11166ETC+T - 16-Bit 500ksps SAR ADC ±5V Bipolar Input | Maxim
The Maxim Integrated MAX11166ETC+T is a 16-bit, 500ksps successive-approximation (SAR) analog-to-digital converter with a true bipolar ±5V (10VP-P) input range, internal 4.096V reference, and 12-pin TDFN (3x3 mm) package. According to the Analog Devices / Maxim Integrated datasheet, the device operates from a single 5V analog supply and provides genuine bipolar input sampling without external front-end signal conditioning, making it well suited for industrial process control and instrumentation that digitize ±10V or 4-20mA-derived signals. What is a SAR ADC: A successive-approximation register ADC is a class of Nyquist-rate data converter that resolves one bit per internal clock cycle using a binary search across an internal capacitive DAC. SAR ADCs offer deterministic latency, no pipeline delay, excellent DC accuracy, and low power consumption compared to pipeline or delta-sigma architectures, making them the architecture of choice for multiplexed data acquisition, motor control feedback loops, and precision instrumentation. The MAX11166ETC+T achieves 16-bit resolution with no missing codes, integrated an optional internal reference that eliminates an external reference IC, and a patented charge-pump input stage that allows direct sampling of high-impedance sources. AC performance includes better than 92 dB SNR and -100 dB THD at 10kHz input, while DC performance delivers ±1 LSB INL and ±0.5 LSB DNL typical. The device also includes a high-speed SPI-/QSPI-/MICROWIRE-compatible serial interface for direct connection to microcontrollers and DSPs. Typical applications include industrial process control (4-20mA loop digitization), vibration and acoustic analysis, multichannel data acquisition systems, medical instrumentation, and automated test equipment. The true bipolar input eliminates the need for level-shifting amplifiers and anti-alias filters, reducing BOM cost and PCB area in space-constrained designs. When designing with the MAX11166ETC+T, place the 0.1µF and 10µF decoupling capacitors as close as possible to the AVDD pin and connect the exposed pad to a solid analog ground plane. Use the internal reference for compact designs, or disable REF and apply an external reference for higher accuracy or ratiometric measurements.
MAX1116EKA-T - 8-Bit 100kSPS SAR ADC SOT-23-8 | Maxim Integrated
The Maxim Integrated MAX1116EKA-T is a single-supply, low-power, 8-bit, 100 kSPS successive-approximation analog-to-digital converter (ADC) housed in an 8-pin SOT-23 package with a footprint roughly 30% of an 8-pin SO. It operates from a single +4.5V to +5.5V supply (the MAX1115 variant covers +2.7V to +5.5V), draws only 175 µA at 100 kSPS, and integrates the track-and-hold, voltage reference, VDD monitor, clock, and a MICROWIRE/QSPI/SPI-compatible serial interface. A successive-approximation ADC is a type of data converter that uses a binary-search algorithm against an internal precision DAC to digitize an analog input in N clock cycles for N bits of resolution. SAR ADCs are prized for their deterministic latency, single-shot conversion capability, and absence of pipeline delay, making them the architecture of choice for multiplexed data-acquisition systems, sensor front-ends, and process-control loops where deterministic timing is required. Key features include 8-bit resolution with no missing codes, an internal 2.048 V reference, an analog input range of 0 V to VREF (unipolar), a high-impedance analog input, and a hardware-/software-programmable power-down mode that drops quiescent current to <1 µA between conversions for battery-powered duty-cycled applications. The MAX1116EKA-T uses Maxim's low-leakage CMOS SAR core with an internal charge-redistribution DAC and on-chip bandgap reference, eliminating the need for external reference components in cost-sensitive designs. The serial interface supports SPI, QSPI, and MICROWIRE hosts, allowing direct connection to most modern microcontrollers and DSPs without glue logic. Typical applications include 4 mA to 20 mA loop-powered remote data-acquisition systems, battery-powered test equipment, low-power handheld portable devices, receive signal-strength indicators (RSSI) in radios, and general system-diagnostics monitoring. The wide operating temperature range of -40 °C to +85 °C makes it suitable for industrial-grade portable instruments. Provide a high-side LDO to power the converter when used on a 4 mA to 20 mA loop. When designing with this part, place a 10 nF bypass capacitor as close as possible to VDD to keep digital switching noise out of the reference, and ensure the analog input source bandwidth matches the acquisition time (typically 625 ns at 100 kSPS) to avoid code-edge errors. The reference decoupling must be sized for the conversion clock; see the datasheet typical application circuit. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
MAX1119EKA-T - 8-Bit 100ksps 2-Ch SAR ADC, SOT-23-8 | Maxim
The Maxim Integrated (Analog Devices) MAX1119EKA-T is a single-supply, low-power, 2-channel, 8-bit successive-approximation analog-to-digital converter (ADC) housed in an 8-pin SOT-23 package. It features 100 ksps sampling, an internal +4.096 V reference (MAX1119), internal track/hold, and an SPI/QSPI/MICROWIRE-compatible serial interface, with an operating supply range of +4.5 V to +5.5 V. A successive-approximation register (SAR) ADC is a type of data converter that performs a binary search on the input voltage using an internal comparator and digital-to-analog converter (DAC). SAR ADCs are valued for their deterministic latency, low power, and excellent behavior around DC inputs, making them a common choice for multiplexed sensor reading, industrial control loops, and battery monitoring where switching-regulator noise from delta-sigma or pipelined converters is undesirable. The MAX1119 sits in the broader hierarchy: ADC -> data converter -> data acquisition IC -> signal chain -> mixed-signal semiconductor. Key differentiating features include the industry's lowest power consumption among 8-bit SAR ADCs in this package (135 µA at 100 ksps), an internal 4.096 V reference that simplifies external BOM, automatic power-down between conversions, and a true 2-channel single-ended input mux. The internal track/hold operates up to 100 kHz input bandwidth, and the SPI/QSPI/MICROWIRE-compatible serial interface connects directly to most embedded microcontrollers without glue logic. Architecturally, the MAX1119 uses a capacitive-charge-distribution SAR core with an on-chip bandgap-derived reference buffer. The BiCMOS process enables low active current while still supporting 100 ksps conversion rates, and the automatic shutdown between conversions drops quiescent current to sub-µA levels for battery-powered duty-cycled sampling. Typical applications include portable data logging, 4-20 mA loop sensor digitization, HVAC thermistor reading, battery fuel gauging, and panel-meter front-ends. The wide supply range and small SOT-23 footprint also suit space-constrained industrial instrumentation. When designing with this part, place the 0.1 µF VDD bypass capacitor within 5 mm of the supply pin and ensure CS, SCLK, and DOUT traces are kept short to avoid digital coupling into the analog inputs. This page synthesizes distributor pricing, drop-in alternatives, and design notes not found in the bare manufacturer datasheet.
MAX111ACAP+ - 14-Bit 2-Ch Sigma-Delta Serial ADC | Maxim
The Maxim Integrated MAX111ACAP+ is a low-cost, 2-channel, 14-bit sigma-delta analog-to-digital converter (ADC) with a serial interface, offered in a 20-pin SSOP (CAP) package. It accepts bipolar input ranges and operates from a single 5V analog supply, integrating an input multiplexer, on-chip auto-calibration, and a sigma-delta modulator followed by a digital filter on a single die. The device targets cost-sensitive precision measurement front ends that demand 14-bit resolution without the complexity of separate signal-conditioning stages. A sigma-delta ADC converts an analog input by oversampling the signal with a high-frequency modulator and then low-pass filtering the resulting bitstream to produce a high-resolution, low-noise digital word. In the broader component hierarchy, sigma-delta ADCs sit between successive-approximation register (SAR) ADCs and integrating ADCs - they trade absolute input bandwidth for high effective resolution and excellent noise rejection. This category belongs to data-conversion ICs, a subset of data acquisition semiconductors that bridge analog sensors and digital microcontrollers or DSPs. Key features of the MAX111ACAP+ include 14-bit resolution (with ±1 LSB INL and no missing codes), ±5V or 0V-to-5V bipolar/uni-polar input ranges, two differential input channels selected via an internal multiplexer, automatic calibration that removes offset and gain errors at power-up or on demand, and a simple 3-wire serial interface (SPI/QSPI/MICROWIRE-compatible) for connection to microcontrollers. The sigma-delta architecture yields inherent digital filtering of wideband noise and excellent 50Hz/60Hz power-line rejection, which is critical in industrial and instrumentation designs. Typical applications are weigh scales, portable instrumentation, temperature measurement with bridge or thermocouple sensors, process-control analog front ends, and panel meters. The MAX111ACAP+ suits any 14-bit, single-supply 5V system that needs a small-footprint, low-cost, dual-channel ADC with on-chip calibration and minimal external parts. When designing with the MAX111ACAP+, observe the recommended decoupling capacitor placement and reference layout - a clean external voltage reference and proper grounding are essential to realize the data-sheet noise and INL performance. The serial-interface timing must also respect the tCONV and tACQ limits; over-clocking the SCLK beyond the maximum 4.8 MHz degrades conversion accuracy. This page synthesizes distributor pricing, drop-in alternative recommendations, and practical design notes that complement (rather than duplicate) the official Maxim datasheet.
MAX111AEWE+T - 14-Bit 2-Ch Delta-Sigma Serial ADC | Analog Devices
The Analog Devices (formerly Maxim Integrated) MAX111AEWE+T is a low-cost, 2-channel, +/-14-bit serial-output delta-sigma analog-to-digital converter (ADC) housed in a 16-pin wide-body SOIC (WSOIC) package with tape and reel packaging. It integrates two differential input channels, an internal auto-calibration engine, and a synchronous serial interface, enabling 14-bit effective resolution plus overrange without any external components. A delta-sigma ADC is a type of analog-to-digital converter that uses oversampling and noise shaping to achieve high resolution at lower sample rates. In the broader signal-chain hierarchy, the delta-sigma ADC sits between successive-approximation (SAR) and dual-slope converters for high-resolution, low-bandwidth applications, and is widely chosen for sensor instrumentation, weigh scales, panel meters, and process control loops where a clean differential front end and digital simplicity matter more than raw speed. Key features of the MAX111AEWE+T include +/-14-bit resolution, two differential analog input channels, a maximum sample rate of 50 samples per second (50 sps), an operating supply current of only 550 uA, and an external or system-clock serial interface. The wide operating supply range of +/-5V (analog) and +5V (digital) plus an industrial temperature range of -40C to +85C make it well suited to factory and process control environments where noise immunity and stable temperature behavior are mandatory. The internal auto-calibration engine compensates offset and gain on demand, eliminating the need for external reference or trim components while still delivering 14-bit performance. The synchronous serial interface streams MSB-first conversion data and accepts an external clock, simplifying hookup to most microcontroller SPI ports without external logic, level shifters, or isolation buffers. Typical applications for the MAX111AEWE+T include weigh scales and load-cell digitizers, industrial pressure and temperature transmitters, panel meters, strain-gauge front ends, and 4-20 mA loop-powered smart sensors. The combination of true differential inputs, low quiescent current, and 2-wire serial output lets designers build isolated, low-power signal-conditioning modules that rail-power from the same loop supply used to drive the field wiring. Designers should place a 0.1 uF decoupling capacitor as close as possible to each supply pin, keep analog and digital grounds star-connected at the ADC ground pin, and keep digital clock traces away from the differential analog traces. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on a single manufacturer datasheet or distributor product page, giving engineers the context needed to select and qualify the MAX111AEWE+T with confidence.
MAX111BEAP+ - 14-Bit 2-Ch Sigma-Delta ADC, Serial | Maxim Integrated
The Maxim Integrated MAX111BEAP+ is a low-cost, 2-channel, ±14-bit serial-output sigma-delta analog-to-digital converter (ADC) housed in a 20-pin SSOP package. It uses an internal auto-calibration technique to achieve 14-bit resolution plus overrange with no external components required, and its serial interface simplifies connection to microcontrollers and DSPs. The supply current is only 550 µA in normal operation and drops to 4 µA in power-down mode, making it attractive for power-sensitive designs. The 2-channel differential input architecture supports direct connection to bridge sensors, thermocouples, and other low-frequency analog sources. A sigma-delta ADC is a type of oversampling converter that uses a high-frequency modulator and digital filtering to achieve high resolution from low-precision analog components. Compared to successive-approximation register (SAR) ADCs, sigma-delta parts trade absolute sample rate for excellent noise immunity and inherent digital averaging, which makes them ideal for precision DC and low-bandwidth measurements in instrumentation, industrial control, and sensor signal-chain applications. The MAX111 sits within the broader hierarchy of ADC > data converter > signal-chain IC > analog semiconductor. Key specifications of the MAX111BEAP+ include ±14-bit resolution (with sign bit + overrange), 2 differential input channels, an integral nonlinearity (INL) of ±2 LSB max, and a typical signal-to-noise plus distortion ratio (SINAD) above 78 dB. It accepts bipolar input ranges configured via external resistors and operates from a single +5V analog supply with a separate digital supply pin for mixed-voltage systems. The 3-wire serial interface is compatible with SPI, QSPI, and MICROWIRE protocols. The internal modulator runs at a high oversampling ratio and is followed by a digital decimation filter, which suppresses wideband noise and provides 50 Hz/60 Hz mains-rejection at the appropriate output word rate. Calibration registers correct offset and gain error on demand, eliminating the need for trimming potentiometers on the PCB. The reference input accepts an external 2.5 V to 5 V source, and the on-chip reference buffer drives the modulator directly. Typical applications include load-cell scales and weighing systems, pressure and strain-gauge instrumentation, industrial process control loops, portable battery-powered meters, temperature measurement using thermocouples or RTDs, and 4 mA to 20 mA current-loop digitizers in factory automation. The wide dynamic range and built-in calibration simplify designs that previously required precision analog front-end components. When designing with this ADC, pay attention to input common-mode voltage and the analog/digital supply decoupling network. Place 0.1 µF ceramic bypass capacitors as close as possible to the AVDD and DVDD pins, and use a low-impedance ground plane to keep digital switching noise out of the analog modulator. Because the device operates from a single +5 V supply, level shifting may be required when interfacing to 3.3 V microcontrollers; in those cases, a small series resistor on DOUT often suffices. This page synthesizes distributor pricing, drop-in same-package alternatives, design considerations, and application guidance in one place to help engineers evaluate the MAX111BEAP+ without cross-referencing multiple datasheets.
MAX1121EGK+ - 8-Bit 250Msps ADC with LVDS Outputs | Maxim
The Analog Devices (formerly Maxim Integrated) MAX1121EGK+ is a monolithic 8-bit, 250Msps analog-to-digital converter (ADC) optimized for outstanding dynamic performance at high intermediate frequencies up to 500 MHz, housed in a 68-pin QFN (10x10 mm) package with exposed thermal pad. It operates from a single 1.8V supply, draws approximately 410 mW, and delivers LVDS-compatible outputs that ease routing into FPGAs and high-speed ASICs. An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that samples a continuous analog waveform and converts each sample into a discrete digital code. Pipelined ADCs, like the MAX1121, use a cascade of low-resolution stages and digital error correction to achieve very high sampling rates (hundreds of Msps) while keeping power dissipation reasonable. Within the power management and signal chain hierarchy, this part sits at: ADC -> data converter -> mixed-signal IC -> semiconductor IC. Key features include a guaranteed 250 Msps conversion rate, 1.8V single supply operation, internal bandgap reference, parallel LVDS outputs, a flexible input stage optimized for high-IF undersampling up to 500 MHz, and low spurious content for wideband applications. The wide input bandwidth allows direct sampling of IF signals in software-defined radio and cable infrastructure, eliminating downconversion stages. The pipelined architecture provides 1.2 GHz analog input bandwidth, an SINAD of approximately 49 dB at 100 MHz input, and excellent spurious-free dynamic range (SFDR) suitable for multi-carrier receivers. On-chip clock duty-cycle correction and LVDS timing alignment reduce FPGA capture complexity. Typical applications include cable modem downstream receivers, digital predistortion feedback paths in wireless base stations, handheld spectrum analyzers and test equipment, and high-IF undersampling in software-defined radio (SDR) platforms where wide bandwidth and low power matter. When designing with this ADC, follow the reference layout in the manufacturer datasheet, keep analog and LVDS return paths separated, and provide a clean low-noise clock to achieve the rated SNR. Decoupling must include 0.1 uF and 10 uF ceramic capacitors close to each supply pin. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
MAX1121EGK+TD - 250Msps 8-Bit ADC, LVDS, QFN-68 | Maxim
The Maxim Integrated (now Analog Devices) MAX1121EGK+TD is a 1.8V, 8-bit, 250 Msps analog-to-digital converter (ADC) with LVDS outputs for wideband applications. Housed in a 68-pin QFN-EP package (10 mm x 10 mm, 0.9 mm height, MO-220, package code G6800-4), this pipelined ADC is optimized for outstanding dynamic performance and operates from a single 1.8V analog supply with separate digital output supply, drawing approximately 250 mW at full speed. An ADC is a data converter that translates continuous analog signals into discrete digital codes for downstream DSP, storage, or transmission. The 8-bit, 250 Msps class sits in the converter hierarchy between general-purpose successive-approximation ADCs (<= 1 Msps) and high-resolution pipelined ADCs (>= 14 bits). Pipelined ADCs use multiple low-resolution flash stages per clock cycle to achieve very high sampling rates while keeping per-stage power dissipation low - the MAX1121's pipeline architecture delivers 250 Msps with 1.8V operation, a balance targeting wideband IF sampling rather than instrumentation precision. Key features include an input bandwidth above 400 MHz, a signal-to-noise-plus-distortion ratio (SINAD) above 46 dB at 100 MHz input, an effective number of bits (ENOB) above 7.2 bits, and LVDS-compatible digital outputs that ease interfacing with FPGAs and dedicated clock-data-recovery (CDR) blocks. The 68-pin QFN-EP package provides an exposed thermal pad for low junction-to-PCB thermal resistance, which is critical at 250 Msps full-speed operation. Differential analog and clock inputs reject common-mode noise and support direct-coupled IF sampling without baluns in many layouts. The MAX1121 uses a proprietary multi-stage pipeline with on-chip track-and-hold, internal reference, and output data serializers. The chip provides separate analog (AVDD) and digital output (OVDD) supplies to isolate switching noise from sensitive analog inputs - a common technique in high-speed ADC design. The LVDS interface reduces EMI and enables longer board traces to the receiver ASIC or FPGA at hundreds of MHz parallel rates. Typical applications include digital predistortion (DPD) feedback paths in cellular base-station power amplifiers, IF sampling for software-defined radios and radar receivers, medical ultrasound beamformers, cable infrastructure digitizers, and test-and-measurement digitizers. The 8-bit resolution is well matched to DPD loops that only require accurate amplitude/phase estimation rather than full signal reconstruction. When designing with this device, allocate substantial ground plane area under the exposed pad and use solid via stitching between the analog and digital domains. Keep analog and clock traces length-matched within a few hundred mils. Maintain the AVDD/OVDD split with separate decoupling networks and verify that downstream LVDS receivers operate within their common-mode range. This page synthesizes current distributor pricing, parametric drop-in alternatives, application notes, and PCB layout guidance that complement the manufacturer datasheet.
MAX11291ENX+CGQ - 24-bit 6ch Sigma-Delta ADC, 100dB SNR | Maxim Integrated
The Analog Devices (formerly Maxim Integrated) MAX11291ENX+CGQ is a 24-bit, 6-channel, ultra-low-power sigma-delta analog-to-digital converter (ADC) with 100 dB SNR at 60 Hz, 17.5 kHz maximum bandwidth, and 2.7V-3.6V AVDD supply, housed in a 36-pin WLP package. The converter integrates six differential or 12 single-ended input channels, an on-chip clock generator, and a flexible SPI-compatible serial interface, simplifying multi-channel data-acquisition front ends. A sigma-delta ADC is a type of oversampling converter that uses a high-frequency modulator and digital decimation filter to achieve very high resolution (commonly 16-24 bits) at the cost of input bandwidth. In the hierarchy of data-converter ICs, sigma-delta ADCs sit alongside SAR (successive-approximation) and pipeline ADCs, favored for precision DC and low-frequency measurement where noise rejection and linearity matter more than speed. The MAX11291 belongs to Maxim's low-power precision ADC family, targeting portable, industrial, and sensor-conditioning applications where SNR per milliwatt is critical. Key differentiating features include 100 dB SNR at 60 Hz with 17.5 kHz bandwidth, 2.5 kHz fully integrated conversion, ultra-low 1.4 mA typical supply current, integrated low-drift reference and PGAs with up to 32x gain, and built-in temperature sensor. The device offers simultaneous 50 Hz and 60 Hz line-rejection at 60 Hz data rate, ensuring clean readings in industrial environments. Internally, the device pairs a fourth-order modulator with a SINC1 + SINC3 selectable digital filter, configurable through the SPI interface for trade-offs between resolution and settling time. The WLP-36 (Wafer-Level Package, 3.5x3.5 mm, 0.4 mm pitch) provides minimal PCB footprint for space-constrained wearables and IoT edge nodes. AEC-Q100 qualification is NOT confirmed in verified sources. Typical applications include 4-20 mA loop-powered industrial sensors, RTD and thermocouple temperature acquisition, weigh scales and load-cell signal conditioning, portable medical monitoring, smart sensor hubs, and battery-powered IoT edge nodes. When designing with this device, allocate at least 100 nF of ceramic decoupling on AVDD and DVDD within 2 mm of the supply pins, and guard-ring the analog inputs on the top layer to minimize leakage from digital switching. Calibration cycles every 100 ms are recommended for absolute-accuracy applications. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
MAX11321ATJ+T - 12-Bit 1Msps SAR ADC, 16-Ch, TQFN-32 | Maxim
The Maxim Integrated (now Analog Devices) MAX11321ATJ+T is a 12-bit, 1Msps successive-approximation (SAR) analog-to-digital converter with 16 analog input channels and an external reference, housed in a 32-pin TQFN-EP (5x5 mm) package. According to the manufacturer datasheet, the device is part of the MAX11321-MAX11328 family of pin-compatible 12-/10-bit, 4-/8-/16-channel ADCs with 1Msps sampling, 1MHz full linear bandwidth, and serial SPI/QSPI/MICROWIRE-compatible output. The "+T" suffix denotes tape-and-reel packaging, while the "ATJ" suffix designates the 32-pin TQFN with exposed pad. A SAR (Successive Approximation Register) ADC is a type of analog-to-digital converter that performs a binary search through an internal DAC to determine the digital output code, one bit per conversion clock. SAR ADCs offer deterministic latency, low power consumption, and excellent DC accuracy, making them the architecture of choice for multiplexed data-acquisition systems, industrial sensor interfaces, and motor-control feedback loops where fast channel switching and precise single-shot conversions are required. Key features include a 1Msps throughput, 12-bit resolution with no missing codes, an internal 4.096V reference (or external reference option), a low-noise input signal conditioner in front of the analog multiplexer, and a wide analog input range of 0V to VREF. The MAX11321ATJ+T achieves >70dB SINAD and ±1 LSB INL/DNL at the rated throughput. The serial interface operates with clock frequencies up to ~24MHz and supports daisy-chaining of multiple ADCs. Architecturally, the MAX11321ATJ+T integrates an input-bandwidth-limiting pre-amplifier per channel, a high-impedance input multiplexer, a track-and-hold, a charge-redistribution SAR core, and a precision reference buffer. The post-mux signal-conditioning access pins let designers insert external filters or gain stages between the multiplexer and the ADC core, which is unusual in this class of converter and greatly simplifies multi-channel signal chains. Typical applications include 4-20mA industrial sensor acquisition, motor-drive phase-current sensing, multi-zone temperature monitoring, PLC analog input modules, and optical module monitoring. Designers also use this ADC in medical instrumentation front-ends and battery-management systems where high channel count and small PCB footprint are mandatory. When designing with this ADC, note the 32-pin TQFN package has an exposed thermal pad that MUST be soldered to the PCB ground plane for proper operation and thermal dissipation. The input multiplexer requires a settling time of about 200ns after each channel switch for full 12-bit accuracy, so engineers should insert a short software delay before triggering each conversion. The external reference input has a high impedance of about 25kohm, so a low-noise reference IC and a 10uF/0.1uF bypass are strongly recommended. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet. Specifications below are sourced from the manufacturer datasheet and DigiKey/Mouser listings as of 2026-10-14.
MAX11324ATJ+T - 10-Bit 1Msps SAR ADC, 8-Ch | Analog Devices
The Analog Devices (formerly Maxim Integrated) MAX11324ATJ+T is a 10-bit, 1Msps, 8-channel successive-approximation-register (SAR) analog-to-digital converter housed in a 32-pin TQFN (5x5 mm) package with exposed pad. Operating from a single 2.35V to 3.6V analog supply, it delivers up to 1Msps throughput while consuming only 5.6 mW at full speed, and includes an external reference input, 1MHz full-linear-bandwidth input mux, and a SPI/QSPI/MICROWIRE-compatible serial interface. An SAR ADC is a successive-approximation-register analog-to-digital converter that performs a binary search against a reference voltage to resolve each conversion in N clock cycles, where N is the resolution in bits. SAR ADCs offer deterministic latency, no pipeline delay, and excellent dynamic performance at moderate sample rates, occupying the engineering niche between precision slow-sampling delta-sigma ADCs and high-speed pipeline ADCs. They are widely used in industrial process control, motor control, and multi-channel data-acquisition systems where low-latency deterministic sampling of multiple analog signals is required. The MAX11324 belongs to the broader category hierarchy: SAR ADC -> data converter -> ADC -> signal chain IC -> mixed-signal semiconductor. Key features of the MAX11324ATJ+T include a 10-bit resolution (10-bit accuracy grade in the MAX11321-MAX11328 family), 1Msps maximum sample rate, 8 single-ended analog input channels, an integrated 8-to-1 input multiplexer with post-mux external signal-conditioning access, 1MHz full-linear-bandwidth track-and-hold, single 2.35V to 3.6V analog supply, an external reference input (REF) for design-driven full-scale range, an SPI/QSPI/MICROWIRE serial interface, low 5.6 mW power consumption at 1Msps, and an automatic channel-scan mode with internal averaging. The post-mux access to each analog input is a distinguishing feature that allows per-channel external amplifiers, filters, or attenuation networks to be inserted without disturbing the mux or track-and-hold. The MAX11324ATJ+T uses a charge-redistribution DAC architecture with internal capacitors and an external reference, achieving INL of ±1 LSB (max), SNR of 61 dB (typ at 1Msps), and SINAD of 60 dB. The TQFN-32 package with exposed thermal pad (EP) provides a thermal resistance (theta_JA) suitable for operation across the -40C to +125C automotive temperature range. The device supports 0 to n x VREF input ranges when used with the internal PGA in adjacent family members, but here operates in single-ended unipolar mode against the external reference. Typical applications include industrial process-control analog input modules, multi-channel sensor data acquisition, motor-control current/voltage monitoring, PLC analog input cards, battery-management telemetry, programmable logic controller (PLC) front-ends, and automotive sensor-cluster digitizers. The 8-channel single-ended input count, 1Msps sample rate, and small TQFN-32 footprint make it ideal for space-constrained multi-channel designs. A key design consideration is decoupling: place a 10uF bulk plus 0.1uF ceramic bypass close to AVDD and DVDD pins, keep the analog and digital ground planes joined at a single point, and route the REF bypass (4.7uF) directly to the EP ground. Use short, symmetrical traces on the analog inputs to minimize channel-to-channel crosstalk. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, application notes, and practical design guidance for the MAX11324ATJ+T - content not found in the standalone manufacturer datasheet.