Circuitos integrados

MAX120CNG+

MAX120CNG+ - 12-Bit 500ksps SAR ADC | Maxim Integrated

The Maxim Integrated MAX120CNG+ is a 12-bit, 500 ksps, single-input successive-approximation analog-to-digital converter in a 24-pin PDIP package. It combines an on-chip track-and-hold circuit with a low-drift voltage reference, providing a complete single-channel conversion solution for industrial measurement, control, instrumentation, and data-acquisition systems. An ADC is a data-acquisition interface that converts an analog voltage into a digital number. Within the hierarchy of analog-to-digital converters, the MAX120CNG+ is a sampling SAR ADC with an integrated track-and-hold function. Successive-approximation conversion repeatedly compares the sampled input with a generated reference voltage, determining each output bit from the most significant bit to the least significant bit. This architecture is appropriate when a compact converter with moderate resolution and rapid sampling is needed. The headline characteristics are 12-bit resolution, a 500 ksps conversion rate, one analog input, SAR conversion, and a 24-pin PDIP package. The manufacturer datasheet identifies the MAX120/MAX122 family as complete BiCMOS sampling ADCs that combine an on-chip track-and-hold circuit, a low-drift voltage reference, fast conversion speeds, and low power consumption. These integrated functions reduce the number of external analog-support components required in a measurement circuit. The MAX120CNG+ uses a 5 V precision ADC configuration and is suited to acquiring rapidly changing or repetitive analog waveforms. A 500 ksps sampling capability permits dense acquisition when the system must observe short-duration events, while 12-bit output resolution provides 4,096 digital codes. The integrated track-and-hold isolates the sampling instant from the input during conversion, reducing the need for external sample-and-hold circuitry. Typical applications include industrial process monitoring, laboratory instrumentation, sensor signal acquisition, digital control systems, and embedded measurement platforms. In each case, the analog front end should scale the sensor output into the converter input range, and the system should provide suitable bypassing and grounding to preserve conversion accuracy. The principal design consideration is input conditioning. Keep the analog trace short, place bypass capacitors near the supply pins, and route return currents away from the analog input. Use the manufacturer pin-description table when assigning PCB tracks because the input, reference, digital interface, power, and ground connections have distinct roles in the conversion system. This page organizes the confirmed MAX120CNG+ characteristics, pin-compatible replacement information, application guidance, comparison parameters, and PCB design notes into a practical engineering reference for evaluating this 12-bit, 500 ksps SAR ADC.

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MAX120CWG

MAX120CWG - 500ksps 12-Bit ADC w/ T/H & Reference | Maxim Integrated

The Maxim Integrated MAX120CWG (also marketed as MAX120CWG+) is a 500 ksps, 12-bit successive-approximation analog-to-digital converter (SAR ADC) with on-chip track/hold (T/H) amplifier and a low-drift buried-zhid voltage reference, housed in a 24-pin wide SOIC (W) package. It supports bipolar input ranges of ±5 V or ±3 V when using ±5 V analog supplies, plus a unipolar 0 to +5 V mode from a single +5 V supply, all selected by strap pin logic. The integrated 2.5 V reference has a low 40 ppm/°C typical drift and supplies the resistor ladder directly, so an external reference is not required. A successive-approximation ADC is a sampling data converter that resolves a single analog input to N bits in N clock cycles using a binary-weighted capacitor DAC and comparator. Each conversion begins with the internal track/hold acquiring the input, then the SAR logic tests bits from MSB to LSB while the comparator output drives the successive-approximation register. SAR ADCs offer deterministic latency and excellent DC accuracy, making them a workhorse for multiplexed data-acquisition front ends, instrumentation loops, and DSP-based control systems. Key features of the MAX120CWG include 12-bit resolution with no missing codes over the industrial 0°C-±70°C range, ±1/2 LSB integral nonlinearity (INL) in grade-A parts, ±25 ppm/°C gain drift, and a track/hold with 100 ps aperture delay. The device uses a BiCMOS process that combines bipolar input/track-hold linearity with CMOS digital logic, and includes a high-bandwidth input buffer option that supports input impedances above 1 kΩ. Throughput is 500,000 conversions per second with a 73 dB SINAD and 70 dB THD, and power consumption is 90 mW typical at full speed, dropping to 5 µW in shutdown. Typical applications for the MAX120CWG include industrial process-control data-acquisition boards, pen-tracer digitizers, precision instrumentation front ends, vibration and sonar signal capture, and DSP-based motor-control current sampling. The integrated reference and small wide-SOIC footprint make it well-suited for compact mixed-signal PCBs where board real estate is constrained. Its wide ±15 V input tolerance and input transient protection also support direct connection to op-amp current-shunt outputs and bridge sensors without external clamps. When designing with this ADC, ensure that the analog and digital grounds are tied only at one point and that the 24-pin wide SOIC (W) package has sufficient copper area for thermal dissipation. Decouple AVDD and DVDD with 22 µF || 0.1 µF tantalum/ceramic pairs as recommended in the datasheet, and strap the input-range and shutdown pins according to the desired ±5 V, ±3 V, 0-5 V, or shutdown mode at power-up. This page synthesizes distributor pricing, drop-in compatible MAX120/MAX122 family variants, and practical PCB decoupling/layout notes not always presented together in the manufacturer datasheet.

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MAX120EAG+

MAX120EAG+ 12-Bit 500ksps SAR ADC | Maxim Integrated

The Maxim Integrated MAX120EAG+ is a 12-bit successive-approximation analog-to-digital converter with one analog input, a 500ksps sampling rate, and an integrated track-and-hold and reference function. It is packaged in a 24-pin SSOP and is identified in the product listings as an industrial-temperature component with gull-wing terminals. The device belongs to the ADC and DAC category of integrated circuits, where its key role is converting a single analog input into a 12-bit digital measurement. An ADC is a data-conversion semiconductor that transforms a continuously varying voltage into a numeric code suitable for processing by a microcontroller, DSP, FPGA, or embedded control system. The MAX120EAG+ uses a successive-approximation architecture, commonly called SAR, which compares the input voltage with a sequence of internally generated reference levels. Its 500ksps maximum sampling capability makes it appropriate for measurement systems that require faster conversion than general-purpose slow ADC functions. The main device characteristics are a resolution of 12 bits, one analog input, a 500ksps conversion rate, and a 24-pin SSOP package. The listings also identify the part as including track-and-hold and reference circuitry. These features are relevant in applications such as industrial process monitoring, instrumentation, sensor signal acquisition, data acquisition systems, and embedded control platforms where a compact single-channel converter is needed. The manufacturer family description identifies the MAX120 series as 500ksps, 12-bit ADCs with track-and-hold and reference functions. The MAX120EAG+ designation uses Maxim Integrated’s E-grade industrial ordering convention and the AG package suffix for a 24-pin SSOP. The verified product listings consistently describe the same 12-bit, single-input, SAR ADC configuration. Because the available manufacturer and distributor references identify the package, architecture, resolution, sampling rate, input count, temperature grade, and core functions, designers can use those characteristics to establish fit before reviewing the detailed electrical limits and pin assignments in the datasheet. For new layouts, place the converter close to the analog source and preserve a short, low-noise analog path to the input pin. Provide the required bypass and reference-decoupling capacitors exactly as specified in the manufacturer datasheet, and route digital output and interface traces away from sensitive input and reference nodes. The single-input architecture is appropriate when multiplexing, gain control, and signal conditioning are handled by external analog circuitry. This page summarizes the verified MAX120EAG+ identity and combines package, application, design, and drop-in replacement guidance with the manufacturer datasheet link. It also highlights the MAX120CAG+ as a documented same-family, same-package replacement candidate, while distinguishing what is known from what must be checked in the final datasheet before layout release.

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MAX120ENG+

MAX120ENG+ - 12-Bit 500ksps SAR ADC | Maxim Integrated

The Maxim Integrated MAX120ENG+ is a 12-bit, single-channel successive-approximation analog-to-digital converter capable of 500 ksps operation and housed in a 24-pin PDIP package. Its 1-input architecture, parallel word-oriented output, 500 ksps sampling rate, and through-hole package make it suitable for instrumentation, industrial control, data acquisition, and embedded measurement systems. An ADC is an analog-to-digital converter, a semiconductor that samples a continuous analog voltage and converts it into a numeric code for processing or storage. Within the data-converter hierarchy, the MAX120ENG+ is a single-channel SAR ADC. Successive approximation compares the sampled input against an internal trial DAC and internal reference until the conversion reaches its specified resolution. This architecture provides predictable sampling behavior for control and measurement systems without the complexity of a continuously operating high-speed converter. The MAX120ENG+ converts single-ended analog input signals into 12-bit digital words. Its 500 ksps maximum conversion rate provides 2 microseconds per conversion before acquisition overhead. The 24-pin PDIP package is intended for through-hole PCB assembly and offers generous spacing between pins for hand soldering, prototyping, inspection, and applications using standard perforated-board construction. The MAX120E family combines a 12-bit SAR conversion core with parallel digital output and integrated reference circuitry. Parallel data access avoids the serial-interface overhead associated with many mixed-signal converters. A parallel bus can also simplify connections to older processors, FPGA interfaces, latch arrays, or dedicated data-capture logic, provided the timing of acquisition, conversion, and data transfer is coordinated correctly. Typical uses include industrial process monitoring, laboratory measurement equipment, sensor signal acquisition, embedded control systems, waveform sampling, and closed-loop control. The single-channel architecture is particularly appropriate when one analog quantity must be sampled with high conversion throughput. Multiplexed systems can also use the converter when switching the analog source externally, although the multiplexer settling time must be allowed before each acquisition. PCB design should keep the analog input path short and isolate it from digital output and clock activity. Place input filtering and reference-decoupling components near the relevant device pins, provide a stable ground reference, and route high-current outputs away from the analog input. Because the converter uses a parallel interface, confirm signal direction, acquisition timing, and bus contention against the manufacturer pin-description table before finalizing the schematic. This product page combines the verified device specifications, package details, sourcing guidance, equivalent-part analysis, and practical PCB guidance into one engineering-focused reference. It also distinguishes true PDIP-24 alternatives from parts that may be functionally similar but do not establish the same board-level replacement requirement.

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MAX120EWG+

MAX120EWG+ - 12-Bit 500ksps SAR ADC | Maxim Integrated

Maxim Integrated MAX120EWG+ is a 12-bit successive-approximation analog-to-digital converter with one single-ended input, a 500ksps sampling rate, and track/hold acquisition in a 24-pin SOIC package. It is designed for data-acquisition and control systems that require parallel digital output, moderate resolution, and conversion throughput in a surface-mount package. An ADC converts an analog input voltage into a digital code for processing by a microcontroller, DSP, FPGA, or other digital controller. The MAX120EWG+ belongs to the ADC hierarchy and specifically implements a successive-approximation architecture, commonly abbreviated SAR. Its 12-bit resolution provides 4,096 digital code levels, while the integrated track-and-hold function supports acquisition of rapidly changing input signals at rates up to 500ksps. The verified manufacturer and distributor information identifies the device as a one-input, 12-bit SAR ADC with a 500ksps sampling rate. It also identifies the MAX120 family as ADCs with track/hold and reference functions. These characteristics make the converter appropriate for industrial monitoring, industrial instrumentation, and embedded data-acquisition systems where a compact surface-mount ADC is needed. The MAX120EWG+ uses a parallel data interface rather than a serial SPI or I2C interface. Parallel output transfers the newly converted code directly to digital logic, which can simplify connections to older processor buses and FPGA input registers. Because the device is a successive-approximation converter, designers should account for acquisition and conversion time when defining the sampling interval and should preserve the analog input signal during the specified track-and-hold interval. Typical uses include digitizing process-control inputs, capturing sensor outputs, sampling waveforms in industrial test equipment, and providing front-end conversion for embedded control systems. The 24-SOIC package also allows reuse of board layouts designed around other qualified 24-pin SOIC converters when pin functions, supply requirements, and acquisition behavior have been verified against the datasheet. The primary design consideration is signal conditioning. The ADC input must remain within the valid analog input range, reference behavior must meet the required accuracy, and the source impedance must permit the internal track-and-hold capacitor to acquire the required voltage during each sampling period. Designers should also place input and reference decoupling close to the device and maintain a quiet return path from the analog input to the device ground. This product page combines the verified MAX120EWG+ specifications, distributor sourcing information, package details, and directly supported replacement references with practical selection guidance. It is designed to help engineers evaluate the converter without confusing it with lower-resolution, slower, or electrically incompatible ADC alternatives.

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MAX1211ETL+T

MAX1211ETL+T - 65Msps 12-Bit IF Sampling ADC | Analog Devices

The Analog Devices / Maxim Integrated MAX1211ETL+T is a 12-bit, 65Msps pipelined analog-to-digital converter (ADC) optimized for intermediate-frequency (IF) sampling in a 40-pin TQFN EP package (6 x 6 mm, 0.80 mm height, MO-220). It delivers 66.8 dB SNR and 79.7 dBc SFDR at fIN = 175 MHz, with a 400 MHz to 700 MHz input bandwidth that supports direct IF sampling, eliminating the need for external mixing stages in many communications and instrumentation front ends. The device is offered in an industrial temperature grade of -40 °C to +85 °C. What is an IF-sampling ADC? An ADC of this type is a data-conversion IC that digitizes analog signals whose carrier frequency lies in the intermediate-frequency (typically tens to hundreds of MHz) range. IF-sampling ADCs sit in the signal chain hierarchy between the RF front end and the baseband processor, and they are a category of high-speed pipeline converters within the broader class of data acquisition ICs. The MAX1211's wide analog input bandwidth lets designers place the ADC directly after the IF filter, simplifying board layout and reducing component count relative to traditional baseband-sampling architectures. Key features include a fully differential wideband track-and-hold (T/H) front end that accepts single-ended or differential inputs, selectable two's-complement or Gray-code CMOS-compatible parallel digital outputs, a data-valid indicator that removes the need for external timing components, and a low-power 3.3 V operating mode that consumes 314 mW in single-ended operation. The internal precision bandgap reference can be overridden by an external reference for design flexibility. Architecturally, the MAX1211 employs a multi-stage pipelined quantizer driven by a wideband track-and-hold, with proprietary calibration logic that linearizes the residue gain to deliver strong SFDR performance at high input frequencies. The 0.15 mW power-down mode preserves battery life during idle periods in portable or interrupt-driven systems. Typical applications include wireless infrastructure receivers (LTE/3G base stations), cable head-end equipment, radar digitizers, medical imaging front ends, and high-end instrumentation digitizers. The wide IF-sampling bandwidth also makes the part attractive for software-defined radio platforms and broadband test gear where the ADC digitizes an IF signal at the antenna interface. When designing with this device, engineers should pay close attention to input common-mode voltage, the differential T/H drive network, and clock jitter - which directly limits SNR at high fIN. Layout care for the analog and digital grounds is essential, and a low-jitter clock source is required to realize the datasheet's 66.8 dB SNR figure. This page synthesizes distributor pricing, parametric drop-in alternatives, and practical design guidance that go beyond the contents of the manufacturer datasheet alone.

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MAX1215EGK+TD

MAX1215EGK+TD - 12-Bit 250Msps ADC | Maxim Integrated

The Maxim Integrated MAX1215EGK+TD is a monolithic 12-bit, 250Msps analog-to-digital converter (ADC) optimized for outstanding dynamic performance at high-IF frequencies, housed in a 68-pin QFN (10x10 mm) package. It operates from a single 1.8V supply and integrates an excellent low-noise front-end that delivers 65.5 dBFS SNR at fIN = 100 MHz and 65 dBFS SNR at fIN = 250 MHz with a -67.5 dBFS noise floor. The ADC achieves 70.7 dBc SFDR, providing wideband spurious-free dynamic range that is critical for broadband digital receivers and direct-IF downconverter chains. What is a high-speed ADC? An analog-to-digital converter (ADC) is a semiconductor device that samples a continuous analog input signal and converts it to a discrete digital codeword at a defined sampling rate. High-speed ADCs (>= 100 Msps) serve as the key bridge between the analog RF/IF domain and the digital signal processing domain in communications, radar, test equipment, and instrumentation systems. The MAX1215 belongs to the high-IF sampling ADC sub-category, where the analog input can be at tens to hundreds of MHz and the converter is typically followed by a digital downconverter (DDC) or FPGA fabric. The MAX1215EGK+TD features include a differential analog input with on-chip input buffer, an internal low-jitter clock multiplier, LVDS-compatible digital outputs, and built-in data-ready (DRDY) framing. Its pipelined internal architecture, combined with proprietary calibration, preserves linearity across process and temperature variations. Industrial temperature grade (-40C to +85C) is offered per the part's HVQCCN package code, making the device well-suited to commercial and industrial deployments. Typical applications include broadband digital receivers, multi-carrier UMTS/WCDMA and LTE base-station digitizers, instrumentation and digital oscilloscopes, radar IF sampling, and cable infrastructure downstream QAM receivers. The combination of 250 Msps sampling, excellent SFDR at high IF, and a compact 68-QFN footprint allows direct mounting on tight mezzanine cards close to the antenna or RF front-end. When designing with this part, allocate at least four PCB layers with dedicated power and ground planes, place 0.1 uF plus 10 uF ceramic bypass capacitors as close as possible to the AVDD pins, and route the LVDS output pairs as 100 ohm differential transmission lines with matched lengths. Provide a clean clock source because aperture jitter dominates SNR at high input frequencies. This page synthesizes distributor pricing, drop-in alternatives, and practical layout guidance that go beyond the manufacturer datasheet pinout and absolute maximums to help engineers shorten integration time.

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MAX1217ECQ+TD

MAX1217ECQ+TD - Dual 12-Bit 125Msps ADC | Analog Devices

The Analog Devices (formerly Maxim Integrated) MAX1217ECQ+TD is a dual, monolithic 12-bit, 125 Msps analog-to-digital converter (ADC) optimized for broadband signal-chain applications, packaged in a 100-pin TQFP-EP (14x14 mm) with gull-wing leads and an exposed thermal pad. The device integrates on-chip track-and-hold amplifiers, a low-drift low-noise buried-zener voltage reference, and operates from a single 1.8V analog supply, delivering outstanding dynamic performance at input frequencies up to 250 MHz. According to the manufacturer's product description, the MAX1217 is fabricated on a BiCMOS process that combines bipolar precision with CMOS logic density, achieving the high sample rate while keeping power dissipation moderate for its speed class. An ADC (analog-to-digital converter) is a data-acquisition component that samples continuous analog voltages and produces discrete digital codes. As a pipelined converter it sits in the signal chain between an analog front end (amplifier, anti-alias filter) and a downstream DSP (digital signal processor) or FPGA. ADC hypernyms include: data converter -> analog-to-digital converter -> pipelined ADC -> broadband ADC -> 12-bit ADC -> semiconductor -> integrated circuit. The MAX1217 family occupies the broadband-joint-to-low-noise portion of this taxonomy, with 2 input channels and 2 pipelined conversion cores per package. Key features include 12-bit resolution, 125 Msps sampling rate per channel (suitable for IF sampling in receivers), 70 dB SNR (typical) and SFDR > 80 dBc at low input frequencies, an internal buried-zener reference that eliminates an external reference IC, and CMOS-compatible digital outputs. The dual-channel architecture supports I/Q baseband sampling directly in a single chip, simplifying PCB area and BOM. The exposed-pad 100-pin TQFP enables low thermal impedance so the part sustains full-rate dual-channel sampling at industrial temperatures without derating. Typical applications include broadband cable downstream receivers, wireless base-station IF sampling, instrumentation digitizers, medical imaging front ends, and radar signal processing. When designing with the MAX1217, place input coupling caps close to each input pin and provide an independent analog and digital ground plane joined at the exposed pad. The +TD suffix denotes tape-and-reel delivery; -40C to +85C industrial operation is supported. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical layout notes not consolidated in any single manufacturer PDF.

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MAX1218ECQ+D

MAX1218ECQ+D - Dual 12-Bit 170Msps ADC | Maxim Integrated

The Maxim Integrated MAX1218ECQ+D is a dual, monolithic, 12-bit, 170 Msps analog-to-digital converter (ADC) optimized for broadband and high-IF sampling applications, housed in a 100-pin exposed-paddle TQFP (HTFQFP) package. Key headline parameters include dual 12-bit resolution, 170 Msps per-channel sampling rate, and a single 1.8 V analog supply rail. An analog-to-digital converter (ADC) is a mixed-signal integrated circuit that converts continuously variable analog voltages into discrete digital codes for processing by DSPs, FPGAs, or microcontrollers. The MAX1218ECQ+D belongs to the high-speed pipelined ADC category, which sits hierarchically under data converters, mixed-signal ICs, and integrated circuits (ICs). Pipelined ADCs use a switched-capacitor multi-stage architecture to achieve sample rates well beyond what successive-approximation (SAR) ADCs can deliver, while maintaining 10-14 bit resolution typical of communications, instrumentation, and defense systems. The device integrates two matched 12-bit ADC cores that share a common input clock and reference, supporting simultaneous sampling of in-phase (I) and quadrature (Q) baseband or intermediate-frequency (IF) signals. It features excellent dynamic performance, including high signal-to-noise ratio (SNR) and spurious-free dynamic range (SFDR) suitable for multicarrier communication receivers. The MAX1218ECQ+D operates from a single 1.8 V supply and is specified over the extended industrial -40°C to +85°C temperature range. Typical applications include broadband cable CMTS downstream receivers, cellular base-station digitizing IF stages, medical imaging front ends (ultrasound beamformers), radar/electronic-warfare IF sampling, and instrumentation digitizers. When paired with a low-jitter clock source and a high-bandwidth differential front-end driver, the MAX1218ECQ+D delivers the dynamic range needed for multi-carrier QAM and OFDM signal chains. When designing with this ADC, prioritize clock-jitter minimization because the SNR ceiling scales inversely with aperture jitter; the datasheet specifies an aperture jitter requirement of sub-picosecond rms. Use a fully differential input topology with a dedicated ADC driver such as the MAX2055 or a comparable low-noise op-amp, and decouple the analog and digital 1.8 V rails with ferrite beads to prevent digital switching noise from coupling back into the analog front end. This page synthesizes distributor pricing, drop-in pin-compatible variants (MAX1217 at 125 Msps and MAX1219 at 210 Msps), and practical PCB-layout and clock-design notes that go beyond the manufacturer datasheet alone.

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MAX1218ECQ+TD

MAX1218ECQ+TD - Dual 12-Bit 170Msps ADC, 100-TQFP | Maxim Integrated

The Maxim Integrated MAX1218ECQ+TD is a dual, monolithic, 12-bit, 170Msps analog-to-digital converter (ADC) supplied in a 100-pin HTFQFP package with an exposed thermal paddle. Per the manufacturer datasheet, the part is specified for industrial-grade operation over the -40C to +85C extended temperature range and provides one of the highest sample-rate-per-watt combinations in its class for broadband signal acquisition. What is a high-speed ADC: A high-speed analog-to-digital converter is a data-conversion integrated circuit that samples continuous analog signals at multi-megasample-per-second rates and produces a parallel or serial digital code, allowing wideband signals in the MHz to hundreds-of-MHz range to be digitized for downstream DSP, FPGA, or ASIC processing. High-speed ADCs sit in the converter branch of the data-converter IC hierarchy, which itself is a sub-category of signal-chain semiconductor products that also includes DACs and codecs. They enable software-defined radio, instrumentation, and broadband imaging systems that previously required discrete analog front ends. Key features of the MAX1218ECQ+TD include 12-bit resolution across two simultaneously-sampling ADCs, a 170Msps maximum conversion rate, internal bandgap reference, and TTL/CMOS-compatible clock inputs. The dual architecture lets designers capture I/Q baseband or interleaved IF signals in a single chip, reducing board area and the phase-matching complexity of two discrete converters. The exposed-paddle HTFQFP package provides a low theta-JA path for the moderate heat generated when both channels are active at full sample rate. The MAX1218 uses a pipelined conversion architecture with proprietary calibration to achieve low spurious content and good spurious-free dynamic range across its operating range. The device operates from a single 1.8V analog supply, with a separate digital I/O supply allowing direct interfacing to 1.8V to 3.3V logic families without external level shifters. Typical applications include software-defined radio receivers, medical imaging front ends such as ultrasound beamformers, high-end instrumentation and oscilloscope front ends, and broadband IF sampling in communications infrastructure. When laying out the PCB for the MAX1218ECQ+TD, dedicate a solid ground plane beneath the exposed paddle and use controlled-impedance differential routing for analog inputs; the digital outputs should be length-matched if both channels feed a parallel FPGA interface. Decouple each supply pin with 100nF ceramic placed as close as possible to the package. This page synthesizes distributor pricing, pin-compatible drop-in alternatives drawn from the same Maxim ADC family, and practical layout notes beyond what is reprinted in the manufacturer datasheet PDF.

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MAX1219ECQ+D

MAX1219ECQ+D - 12-Bit 210Msps Dual ADC | Maxim Integrated

The Maxim Integrated MAX1219ECQ+D (now under Analog Devices/Maxim Integrated) is a 1.8V, dual-channel, 12-bit analog-to-digital converter (ADC) sampling at up to 210 Msps, designed for broadband communications and high-IF signal-path applications. The converter integrates two 12-bit ADC cores that can be operated independently or time-interleaved, delivering a combined throughput that supports wideband multi-standard receivers in wireless base-station and cable-infrastructure designs. An ADC (analog-to-digital converter) is a data-acquisition component that samples continuous analog waveforms and quantizes each sample to a discrete digital code at a defined sample frequency (Fs). The MAX1219ECQ+D belongs to the high-speed pipeline-ADC class, a sub-category of integrated data converters within power management and signal-chain semiconductors. Pipeline ADCs trade modest latency (typically 3-5 clock cycles) for high sample rate and low power per conversion, making them the dominant architecture for IF digitization between 10 MHz and 200 MHz where SAR ADCs cannot keep up and flash ADCs burn excessive current. Key performance features include 210 Msps maximum conversion rate per channel, 12-bit resolution, 1.8V single supply operation, low power dissipation typical of CMOS pipeline ADCs, and a clock-duty-cycle equalizer that maintains SNR across non-50% clock sources. The internal reference and differential analog inputs simplify front-end design by eliminating external reference buffers and allowing direct coupling to differential IF stages from upstream mixers and baluns. Typical applications include multi-carrier GSM/EDGE base-station receivers, WiMAX and LTE broadband wireless links, cable modem head-ends, and set-top box tuners where the dual channels handle I/Q or diversity paths. The wide full-power input bandwidth and broadband spurious-free dynamic range also suit it to test-and-measurement digitizers and medical ultrasound beamformers. The clock-duty-cycle equalizer is internally fixed and not externally disable-able. When designing with this device, follow the reference-layout guidelines closely because the 210 Msps edge rates couple aggressively into analog traces. Keep input traces length-matched, provide solid ground stitching around the analog and clock pins, and place input RC anti-alias networks within 100 mils of the analog inputs to preserve SNR.

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MAX1219ECQ+TD

MAX1219ECQ+TD - Dual 12-Bit 210Msps ADC, 1.8V | Maxim Integrated

The Maxim Integrated MAX1219ECQ+TD is a 1.8V, dual-channel, 12-bit analog-to-digital converter (ADC) sampling at 210 Msps, optimized for broadband communications and high-IF signal-path applications. The device integrates two matched 12-bit ADC cores, a clock duty-cycle equalizer, and a shared reference into a 100-pin HTFQFP exposed-pad package (ECQ suffix). The 1.8 V analog/digital supply interface simplifies interface logic to modern FPGAs and baseband ASICs. An analog-to-digital converter (ADC) is a mixed-signal data converter that samples continuous-time analog waveforms into discrete digital codes at a defined sample rate (sps = samples per second). The MAX1219 belongs to the high-speed pipelined ADC family, a subclass of Nyquist-rate data converters used in wired/wireless baseband, instrumentation, and radar receivers. Within the power-management hierarchy of a typical broadband radio, the ADC sits downstream of the LNA/mixer and upstream of the digital baseband, and its dynamic performance (SFDR, SFDR) directly bounds the receiver's spurious-free dynamic range. The headline parameters include 210 Msps minimum sample rate per channel, 12-bit resolution, 70.1 dBFS SINAD (typical) at 100 MHz input and 210 Msps, 78 dB SINAD (per the secondary datasheet listing), 80 dBFS SFDR at -1 dBFS, a 1.8 V core supply with 3.3 V tolerant digital outputs, and an integrated differential clock receiver with duty-cycle equalizer. The duty-cycle equalizer cannot be disabled externally and requires a minimum 40 MHz clock to meet datasheet specifications. The device is built on a bipolar CMOS-DMOS process and uses a fully differential pipelined architecture with proprietary internal calibration that corrects capacitor mismatch on power-up. Per-channel offset and gain trim is supported via the serial control interface. The HTFQFP-100 exposed-pad package provides a low thermal-resistance path for the multi-hundred-milliwatt single-channel and dual-channel dissipation budget. Typical applications include cellular base-station receivers (GSM/EDGE/W-CDMA/LTE), broadband cable head-end CMTS upstream capture, digital predistortion (DPD) feedback paths in power amplifiers, radar and electronic-warfare intermediate-frequency digitization, and instrumentation digitizers. The dual matched core enables I/Q baseband sampling from a single chip. Designers should place the clock source within 1 cm of the CLK+ and CLK- pins, route CML/LVDS outputs with 50 ohm controlled impedance, and bond the EP pad to a low-impedance ground island with multiple thermal vias. Reference decoupling must use 10 uF plus 0.1 uF ceramics located within 3 mm of the REF pins to meet 78 dB SINAD on the AIN inputs. The clock duty-cycle equalizer's 40 MHz minimum clock constraint must be observed or supply current can rise by up to 40 mA with random output toggling, as noted in the Maxim datasheet.

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MAX121CAP+

MAX121CAP+ - 14-Bit 308ksps SAR ADC | Analog Devices

The Analog Devices MAX121CAP+ is a 14-bit successive-approximation analog-to-digital converter with one input, a 308ksps conversion rate, 78dB SINAD, and a 20-pin SSOP package. The device combines an on-chip track-and-hold circuit and a low-drift, low-noise buried-zener voltage reference in a complete BiCMOS serial-output converter. An ADC converts an analog voltage into a numeric value for processing, storage, or control. The successive-approximation register, or SAR, architecture compares the sampled input against a generated reference through successive bit decisions. Within the broader ADC hierarchy, the MAX121 belongs to the precision SAR ADC category, combining sampled-data conversion with a serial interface suitable for DSP-controlled measurement systems. The headline operating characteristics are 14-bit resolution, 308ksps throughput, and 78dB signal-to-noise-plus-distortion performance. A 20-pin SSOP package reduces board area compared with the older 16-pin DIP and SO options associated with the MAX121 family. The converter also accepts TTL- and CMOS-compatible clock and logic signals, supporting integration with both older DSP serial ports and CMOS control logic. The MAX121 architecture is designed for low-power, low-noise measurement. Its integrated track-and-hold stage acquires the input voltage before conversion, while the buried-zener reference supplies a stable conversion reference on the same die. The serial interface can connect directly to the serial ports of popular digital-signal processors, reducing parallel-bus wiring and allowing compact instrumentation designs. Typical uses include industrial process measurement, instrumentation, digital signal processing, data acquisition, and embedded control systems that require accurate sampling without a high-resolution parallel ADC. Its combination of 308ksps throughput and 78dB SINAD also makes it suitable for audio, communications, and laboratory signal-acquisition circuits when the system clock and serial interface are compatible. The principal design consideration is clocking. The manufacturer specifies a 1.1MHz to 5.5MHz input-clock range for TTL- and CMOS-compatible operation. Confirm that the host DSP supplies a valid clock, correct serial framing, and the required acquisition timing. Input conditioning and reference bypassing should follow the application guidance in the manufacturer datasheet to preserve conversion accuracy and noise performance. This product page combines the manufacturer's converter specifications, package and interface details, sourcing workflow, replacement analysis, and practical design guidance. It is intended to help engineers determine whether the MAX121CAP+ fits an existing 20-pin SSOP design before committing the part to a new PCB or production BOM.

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MAX121CPE+

MAX121CPE+ - 14-Bit 308ksps ADC | Analog Devices

The Analog Devices MAX121CPE+ is a 14-bit, 308ksps, successive-approximation analog-to-digital converter with a serial output and DSP interface, packaged in a 16-pin DIP. It includes an on-chip track-and-hold circuit and a low-drift, low-noise buried-zener voltage reference. The verified specifications also identify 78dB SINAD, a single-ended input, dual-polarity input capability, and TTL/CMOS-compatible digital interfaces. An ADC is a data-conversion IC that converts an analog voltage into a numeric value for processing by a microcontroller, DSP, or other digital system. The MAX121 belongs to the broader analog-to-digital converter hierarchy, where a sampling ADC samples an input waveform and reports a digital code representing its voltage. Its serial output reduces the number of signal connections required compared with a parallel-output converter, making the device suitable for compact instrumentation systems. Key features include a 14-bit conversion resolution, a maximum throughput rate of 308ksps, and 78dB signal-to-noise-plus-distortion performance. The integrated track-and-hold circuit supports direct acquisition of rapidly changing analog signals, while the on-chip buried-zener reference reduces the need for an external precision reference. Compatible clocking from 1.1MHz to 5.5MHz allows the conversion rate to be matched to the host processor and system timing requirements. The MAX121 uses a BiCMOS implementation and a serial-output architecture intended for direct connection to popular digital signal processors. Its logic inputs and outputs are compatible with TTL and CMOS systems, which simplifies interfacing with legacy DSP and embedded-control equipment. The specified 4.75V operating value, low-noise reference, and 14-bit resolution are particularly useful when accurate measurement must be performed with a modest number of external components. Typical applications include industrial process measurement, laboratory data acquisition, instrumentation, control systems, and embedded DSP modules. The 308ksps throughput is suitable for sampled sensors and supervisory control channels, while 78dB SINAD supports measurements requiring substantially more precision than an 8-bit converter. The serial interface also reduces PCB trace count compared with a parallel ADC when board space is constrained. Designers should provide the supply and reference bypassing specified by the manufacturer datasheet and keep analog input routing away from high-current digital clock and interface traces. Because the MAX121CPE+ uses a through-hole 16-pin DIP package, it is appropriate for legacy boards, prototype systems, and manually serviced industrial equipment, but it requires more PCB area than a surface-mount alternative. This page consolidates verified manufacturer and distributor details, distinguishes the available same-family temperature-grade alternatives, and adds practical selection and interface guidance. It does not infer prices, pin assignments, or compliance claims that are absent from the supplied verified data.

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MAX121CWE+

MAX121CWE+ - 14-Bit 308ksps ADC | Maxim Integrated

The Maxim Integrated MAX121CWE+ is a 14-bit, 308ksps, single-ended SAR analog-to-digital converter with a DSP-compatible serial interface and 78dB SINAD, packaged in a 16-pin WSOIC. The device also integrates a sampling track-and-hold circuit and a low-drift, low-noise buried-zener voltage reference. Its BiCMOS construction combines low-power operation with the conversion speed and accuracy needed for precision signal acquisition. An ADC is a data-acquisition semiconductor that converts an analog voltage into a digital value. The MAX121 belongs to the SAR ADC family, where a successive-approximation register compares the sampled input against an internal DAC during each conversion. In the broader hierarchy, it is a converter ADC, data-conversion IC, and analog-to-digital converter within the semiconductor category. The principal performance figures are 14-bit resolution, 308ksps conversion throughput, and 78dB signal-to-noise-and-distortion ratio. The MAX121 accepts a single-ended input and provides a DSP interface suited to serial data acquisition. Its integrated reference uses a buried-zener structure, while the track-and-hold front end reduces the need for external analog sampling circuitry. A nominal -5.00V internal reference is identified in the manufacturer datasheet. According to the MAX121 manufacturer datasheet, the reference output at VREF must be bypassed to AGND with a 0.1uF ceramic capacitor in parallel with a 22uF or greater electrolytic capacitor. The electrolytic capacitor must have an equivalent series resistance of 100mOhm or less. This stability requirement is important because reference-network impedance affects ADC accuracy and noise performance. Typical uses include industrial process monitoring, precision sensor acquisition, laboratory measurement equipment, DSP front ends, and embedded control systems. The serial interface can reduce wiring in multichannel measurement equipment, although the MAX121 itself is a one-input converter and may require multiplexing when several analog channels must be measured. For a new design, preserve the manufacturer reference-bypass topology and keep the analog input path short to minimize conversion error and noise pickup. The primary trade-off is throughput: 308ksps is suitable for fast acquisition but should be checked against signal bandwidth, filtering requirements, and the update rate needed by the downstream DSP. This page combines verified manufacturer specifications, distributor availability information, packaging details, and same-family replacement guidance. It also identifies unresolved pricing, lifecycle, and package-rotation data explicitly rather than presenting unverified values as facts.

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MAX121EAP+

MAX121EAP+ - 14-Bit 308ksps ADC | Maxim Integrated

The Maxim Integrated MAX121EAP+ is a 14-bit successive-approximation analog-to-digital converter with a 308ksps conversion rate, 78dB SINAD, and a DSP-compatible interface in a 20-pin SSOP package. It operates from a 5V supply and is specified for industrial-temperature applications. The MAX121EAP+ combines moderately high sampling speed with 14-bit nominal resolution, making it suitable for control systems, industrial measurement equipment, and DSP-based data-acquisition systems where accurate conversion of changing analog inputs is required. An ADC is an analog-to-digital converter, a semiconductor device that transforms a continuously varying voltage into a numeric code for processing, storage, or control. Within the data-converter hierarchy, the MAX121EAP+ is a successive-approximation ADC with a DSP interface. This architecture supports deterministic conversion while reducing the external circuitry and signal-chain complexity normally associated with designing a complete measurement channel. Key verified features include 14-bit resolution, a maximum conversion rate of 308ksps, 78dB signal-to-noise-plus-distortion ratio, a 5V supply, and a 20-pin SSOP package with gull-wing leads. The 20-pin package provides a practical footprint for compact industrial and embedded designs while supporting surface-mount assembly. The verified industrial temperature grade and 0.209-inch by 5.30mm package dimensions help guide board layout and enclosure planning. The MAX121EAP+ uses successive-approximation conversion, which compares the input voltage with an internally generated reference through a sequence of decision steps. Its DSP interface is intended to simplify connection to digital signal processors and other programmable logic. Because detailed input bandwidth, reference requirements, acquisition timing, and pin-level definitions are not included in the supplied verified data, those values should be confirmed in the manufacturer datasheet before final schematic approval. Typical uses include industrial process monitoring, precision control systems, laboratory instrumentation, and embedded acquisition platforms. In a process-control design, the ADC can translate a conditioned sensor signal into a digital code for a controller. In DSP-based equipment, the interface reduces the need for separate parallel-bus capture logic. The 308ksps rate is also appropriate for sampling several multiplexed channels when the required signal bandwidth and acquisition time allow it. Design should begin by confirming the complete pinout, reference-voltage tolerances, analog input range, acquisition timing, and interface logic from the manufacturer datasheet. The SSOP footprint should be placed away from switching nodes and noisy high-current paths, with a quiet analog ground strategy and local bypass capacitors implemented according to the official recommended circuit. Input scaling and filtering must be designed to keep the analog signal within the converter's specified range. This page combines verified distributor specifications, package information, pricing, and cross-reference results with practical selection guidance. It also identifies where additional datasheet data is required, avoiding unsupported assumptions about pin assignments, accuracy across temperature, and detailed electrical limits.

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MAX121EPE+

MAX121EPE+ 14-Bit 308ksps ADC | Maxim Integrated

The Maxim Integrated MAX121EPE+ is a 14-bit serial-output successive-approximation analog-to-digital converter with a 308ksps conversion rate, 78dB SINAD, and one analog input channel. The device is packaged in a 16-pin through-hole plastic DIP and combines an on-chip track-and-hold circuit with a low-drift, low-noise buried-zener voltage reference. It accepts TTL- and CMOS-compatible serial-interface signals and is designed for direct connection to the serial ports of digital signal processors. An ADC is an analog-to-digital converter, a semiconductor that converts continuously varying voltage signals into numeric values for processing, measurement, or control. The MAX121 belongs to the successive-approximation ADC family and forms part of the broader signal-conversion and data-acquisition hierarchy. Its single-input architecture is useful when one measured analog channel must be converted rapidly without adding a multiplexer, while the serial output supports compact connections to DSP-based or microcontroller-based measurement systems. Key specifications include 14-bit resolution, a maximum conversion rate of 308ksps, and 78dB signal-to-noise-plus-distortion performance. The integrated track-and-hold stage simplifies acquisition of changing analog signals, while the internal buried-zener reference reduces the need for an external precision reference. The 16-pin DIP provides a straightforward through-hole layout with a 2.54mm lead pitch. The MAX121EPE+ is identified as an industrial-temperature-grade component, making it appropriate for industrial instrumentation and embedded measurement systems where operating conditions exceed consumer-temperature expectations. Technically, the converter uses a BiCMOS implementation to combine bipolar precision characteristics with CMOS interface functions. Its serial interface can operate with clocks from 1.1MHz to 5.5MHz, and all logic inputs and outputs are compatible with TTL and CMOS levels. This interface rate supports high-throughput conversion when the receiving processor can service serialized results at the corresponding clock frequency. The converter also includes application information for connecting it to popular digital signal processors, which simplifies integration into dedicated measurement engines. Typical uses include industrial process monitoring, sensor-signal acquisition, laboratory data-acquisition systems, DSP-based control, and embedded instrumentation. In each case, the 308ksps throughput provides ample conversion margin for many rapidly sampled analog channels. A software-selectable or externally controlled sampling arrangement can also be used to connect the ADC to a broader signal chain, although the MAX121 itself provides one analog input. When designing the circuit, prioritize a short, quiet analog-input path, a stable analog ground connection, and proper bypassing of the 5V supply. Keep digital clock and serial-data routing away from the sensitive input node to limit conversion error. Confirm the source impedance and acquisition interval so that the internal track-and-hold capacitor has sufficient time to settle before each conversion. Follow the manufacturer datasheet for input conditioning, reference configuration, clock timing, and interface signal definitions. This product page combines the manufacturer’s core electrical and interface specifications with practical integration guidance, comparison data, and drop-in alternatives in the same 16-pin DIP format. That information helps engineers evaluate the MAX121EPE+ for precision data-acquisition and DSP-interface applications without relying only on basic catalog parameters.

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MAX121EWE+

MAX121EWE+ - 14-Bit 308ksps ADC | Analog Devices

Analog Devices MAX121EWE+ is a complete 14-bit, single-input successive-approximation analog-to-digital converter with up to 308 ksps conversion throughput, 78 dB SINAD, and a 16-SOIC package. It combines an on-chip track-and-hold circuit with a low-drift, low-noise buried-zener voltage reference. The serial output and DSP interface make the device suitable for compact, precision signal-acquisition systems. An ADC is a data-conversion IC that transforms an analog input voltage into a digital code for processing, measurement, or control. The MAX121 belongs to the successive-approximation ADC family, with the ADC category forming part of the broader data-conversion and signal-processing semiconductor hierarchy. Unlike flash and pipeline converters, this SAR architecture is appropriate for instrumentation where accuracy, cost, power consumption, and a compact serial interface are important design considerations. Key features include 14-bit resolution, a maximum sampling rate of 308 ksps, and 78 dB SINAD. The integrated track-and-hold function simplifies front-end sampling, while the internal buried-zener reference reduces the need for an external precision reference. A low-noise reference and serial output are especially useful when measured data must be transferred directly to a digital signal processor or another serial master device. Technically, the MAX121 uses a BiCMOS implementation combining analog sampling circuitry and digital control functions. Its serial-output architecture reduces the number of interconnects required for conversion data, allowing a compact 16-SOIC package. The manufacturer describes the device as operating with low power consumption and fast conversion speed, making it useful where acquisition speed must coexist with a limited board area and moderate system complexity. Typical applications include industrial process measurement, sensor-interface digitizers, laboratory data-acquisition systems, DSP front ends, and embedded control systems. The 308 ksps rate supports high-speed sampling, while 14-bit resolution and 78 dB SINAD provide useful accuracy for monitoring analog quantities such as temperature, pressure, position, and voltage. Serial communications also reduce wiring requirements in multi-channel or distributed measurement equipment. A critical design consideration is reference bypassing. According to the manufacturer datasheet, the reference output at VREF requires a 0.1 uF ceramic capacitor in parallel with a 22 uF or greater electrolytic capacitor to AGND, and the electrolytic capacitor ESR must be 100 mOhm or less. Input, reference, and digital-interface layouts should separate sensitive analog paths from switching and high-current return currents. This page consolidates verified manufacturer and distributor information, package details, pricing, compatible family alternatives, and practical design guidance. It also distinguishes verified drop-in options from unspecified substitutes, helping engineers compare the MAX121EWE+ without relying on incomplete distributor listings or unverified cross-reference claims.

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MAX121MJE

MAX121MJE - 14-bit 308ksps Serial ADC, CDIP-16 | Maxim/ADI

The Maxim Integrated (Analog Devices) MAX121MJE is a complete BiCMOS, serial-output, 14-bit sampling analog-to-digital converter (ADC) that integrates an on-chip track/hold amplifier and a low-drift, low-noise buried-zener voltage reference. The MAX121MJE is specified at 308 ksps conversion rate with 78 dB SINAD (signal-to-noise + distortion), is housed in a 16-pin CDIP (Ceramic DIP) through-hole package, and is qualified to the military temperature range of -55C to +125C. An analog-to-digital converter (ADC) is a mixed-signal integrated circuit that converts continuous analog voltages into discrete digital words. Successive-approximation (SAR) ADCs, such as the MAX121, perform a binary search through an internal capacitive DAC during each conversion cycle, producing accurate results with no pipeline latency - making them well suited to multiplexed data acquisition and DSP input stages. The MAX121 family hierarchy is: SAR ADC -> ADC -> data converter -> mixed-signal IC -> semiconductor. Key differentiating specifications include a serial DSP-compatible interface (compatible with TMS320 serial ports), 78 dB SINAD at the input frequency of 100 kHz, 1.1 MHz to 5.5 MHz external clock range, bipolar input range of +/-5 V (with proper reference), low power consumption of approximately 30 mW at 308 ksps, and a buried-zener reference with low drift. All logic inputs and outputs are TTL- and CMOS-compatible, simplifying interface to legacy 5 V digital systems. Architecturally, the MAX121 uses a charge-redistribution DAC and a laser-trimmed buried-zener reference. The track/hold amplifier at the front end acquires the input within the same clock cycle that the SAR engine performs conversion, eliminating need for an external sample-and-hold IC. Compared to lower-speed integrating ADCs, the MAX121's 308 ksps rate enables wide-bandwidth signal capture while preserving 14-bit resolution. Typical applications include precision data acquisition systems, sonar and vibration analysis front ends, digital signal processing (DSP) input stages, instrumentation digitizers, and military/aerospace signal chains. The CDIP-16 ceramic package combined with MIL temperature grade makes the MAX121MJE especially suited to harsh-environment designs requiring hermetic packaging. When designing with this device, ensure the analog input remains within the common-mode range of the chosen reference configuration and that the external clock (1.1 MHz to 5.5 MHz) is stable and jitter-free. The serial interface is configured for DSP-mode serial output, so the host processor must support a compatible synchronous serial frame. This page synthesizes distributor pricing, MIL-grade pin-compatible alternatives, and design considerations not found in the bare datasheet - giving engineers a single source for MAX121MJE sourcing and replacement decisions.

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MAX1224CTC+

MAX1224CTC+ - 12-Bit 1.5Msps SAR ADC | Maxim Integrated | TQFN-12

The Analog Devices (formerly Maxim Integrated) MAX1224CTC+ is a 12-bit, 1.5 Msps successive-approximation-register (SAR) analog-to-digital converter with a single true-differential input channel, housed in a 12-pin TQFN (4x4 mm) package. It operates from a single +2.7V to +3.6V supply, drawing only a few mA of supply current at full sampling rate, and provides a high-speed SPI/QSPI/MICROWIRE-compatible digital interface for direct connection to microcontrollers and DSPs. An ADC (analog-to-digital converter) is a data-acquisition integrated circuit that samples a continuous analog voltage and converts it into a discrete digital code. SAR ADCs use a binary-search successive-approximation algorithm that delivers a complete conversion in a fixed number of clock cycles, making them ideal for multiplexed data acquisition, instrumentation, and control loops. The MAX1224 belongs to the data converter -> ADC -> SAR ADC -> precision 12-bit ADC family within Maxim's mixed-signal IC portfolio. Key specifications include a 12-bit resolution with no missing codes, 1.5 Msps sampling rate, true-differential analog inputs, SPI-compatible serial output, and low-power operation. Per the Maxim datasheet, the device features an internal 2.5V reference (or accepts an external reference) and a shutdown mode that reduces supply current to a few microamps between conversions. The TQFN-12 (4x4 mm) package is halogen-free and qualified for the commercial temperature range of 0C to +70C. The MAX1224 architecture uses a charge-redistribution DAC array combined with a precision comparator and SAR control logic. The true-differential input structure rejects common-mode noise and ground bounce, enabling accurate conversion in electrically noisy industrial environments. The integrated track-and-hold eliminates the need for an external front-end amplifier in many single-ended applications. Typical applications include industrial process control, portable data loggers, battery-powered instrumentation, motor control feedback loops, and optical-sensor signal conditioning. The combination of single-supply operation, true-differential input, and a tiny TQFN package suits space-constrained embedded designs. When designing with this device, place 0.1uF decoupling capacitors as close as possible to the supply and GND pins. Use a low-impedance ground plane and keep analog and digital traces separated to avoid coupling noise into the reference or analog input. This page synthesizes distributor pricing, parametric alternatives, and design notes not found in the manufacturer datasheet alone, helping engineers quickly evaluate the MAX1224CTC+ for drop-in placement in precision data-acquisition channels.

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MAX1225CTC+

MAX1225CTC+ - 12-Bit 1.5Msps Differential ADC | Maxim Integrated

The Maxim Integrated MAX1225CTC+ is a 12-bit, 1.5Msps, single-supply, low-power, true-differential, serial-output analog-to-digital converter (ADC) housed in a 12-pin TQFN (Thin Quad Flat No-lead) package with exposed pad. It operates from a single +3V supply (2.7V to 3.6V) and consumes only 9mW at full speed, with an automatic power-down between conversions that reduces dissipation to less than 1mW at slower throughputs. The differential input architecture delivers 70dB SNR and 86dBc SFDR, enabling true-differential signal acquisition that rejects common-mode noise in industrial and instrumentation environments. An ADC (analog-to-digital converter) is a semiconductor device that samples continuous analog voltage signals and converts them into discrete digital codes for processing by microcontrollers, DSPs, or FPGAs. Within the broader taxonomy, the MAX1225CTC+ belongs to successive-approximation-register (SAR) ADCs, which sit under the data-converter IC family and the data-acquisition product category. SAR ADCs are prized for deterministic latency, low power consumption, and the absence of pipeline delay, making them ideal for multiplexed multi-channel systems and event-triggered sampling. Key features of the MAX1225CTC+ include a high-speed SPI/QSPI/MICROWIRE-compatible serial interface, true-differential analog inputs with ±VREF input range, an internal 2.5V reference (with the option to use an external reference), and a 12-pin TQFN package measuring just 4mm x 4mm. The device supports both internal and external clock operation and offers an active-low shutdown pin to minimize idle current. The exposed thermal pad lowers junction-to-ambient thermal resistance, supporting reliable operation across the -40C to +85C commercial temperature range. The MAX1225CTC+ uses a charge-redistribution SAR architecture and an input track-and-hold capable of handling signals beyond the Nyquist frequency with minimal distortion. At 1.5Msps, the converter settles in approximately 670ns per conversion, and the serial data interface shifts out the 12-bit result MSB-first in 12 clock cycles, allowing easy connection to most modern microcontrollers. The internal reference is trimmed to ±1% accuracy, eliminating the need for external reference components in cost-sensitive designs. Typical applications include data acquisition systems, industrial process control, portable instrumentation, and medical monitoring equipment. It is also well suited for motor control feedback, weigh scales, and remote sensor interfaces where true-differential inputs reject ground-loop noise in long cable runs. The combination of single 3V supply operation and low power consumption makes it attractive for battery-powered handheld instruments. When designing with this ADC, ensure the input common-mode voltage stays within the specified 0.1V to VDD-0.1V range for true differential sampling. Bypass the supply pin with a 0.1uF ceramic capacitor placed as close as possible to the exposed pad, which must be soldered to the ground plane for thermal dissipation. For best SNR performance, drive the differential inputs with low-impedance op-amps such as the MAX4162 or MAX4245. This page synthesizes distributor pricing, pin-compatible drop-in alternatives, and practical design notes that go beyond the manufacturer datasheet alone, giving engineers a one-stop reference for sourcing and applying the MAX1225CTC+ in real designs.

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MAX1225CTC+T

MAX1225CTC+T - 12-Bit 1.5Msps Diff ADC | Maxim Integrated

The Maxim Integrated MAX1225CTC+T is a 12-bit, 1.5Msps, single-supply, low-power, true-differential analog-to-digital converter (ADC) with a serial interface, housed in a 12-pin TQFN (HVQCCN) package. It accepts differential analog inputs, operates from a 2.7V to 3.6V analog supply plus a separate 2.7V to 5.25V digital interface supply, and delivers true-differential inputs with unipolar or bipolar input ranges through external reference and signal conditioning. Key features include successive-approximation register (SAR) architecture, throughput up to 1.5Msps, integrated track-and-hold, low power consumption (typically under 10 mW at full speed), and an SPI/QSPI/MICROWIRE-compatible serial data interface. The true-differential input stage provides inherent common-mode noise rejection, which simplifies PCB layout in noisy industrial environments and improves effective resolution when digitizing small signals riding on top of large DC offsets. The MAX1225CTC+T uses a charge-distribution SAR core with input signal scaling and a dedicated reference input. The internal conversion clock is derived from the serial interface, removing the need for an external high-frequency oscillator. Its internal reference structure supports both internal and external reference modes, allowing designers to trade absolute accuracy for flexibility. Typical applications include industrial process control, data-acquisition systems, motor control feedback, instrumentation, and portable or battery-powered measurement equipment. The differential input and high sampling rate also make it suitable for vibration analysis, multi-axis position sensors, and signal conditioning in noisy electrical environments. Designers select the MAX1225 when both throughput and low-power serial-interface connectivity are required. When designing with this device, decouple both AVDD and DVDD locally with 0.1 uF and 10 uF ceramics, route analog and digital grounds as a star, and place the input RC network as close to the input pins as possible to preserve the wide analog bandwidth. Use a low-noise external reference when absolute accuracy is required; for the lowest drift, tie REF to a buffered bandgap. This page synthesizes distributor pricing from authorized channels, drop-in same-package alternatives, and practical PCB-level design notes not found in the bare manufacturer datasheet.

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MAX1225ETC+

MAX1225ETC+ - 12-Bit 1.5Msps SAR ADC | Maxim Integrated

The Maxim Integrated MAX1225ETC+ (now under Analog Devices / Maxim Integrated) is a 12-bit, 1.5Msps, true-differential, serial-output, single-supply analog-to-digital converter (ADC) housed in a 12-pin TQFN (4x4) package with an exposed thermal pad. It delivers up to 1.5 million samples per second from a true-differential analog input, with an SPI/QSPI/MICROWIRE-compatible serial interface. The MAX1225ETC+ operates from a single 2.7V to 3.6V analog supply, making it suitable for low-power precision instrumentation. A successive-approximation (SAR) ADC is a member of the data-converter family that performs a binary-search conversion cycle on the analog input using an internal capacitive DAC. SAR ADCs are valued for their deterministic latency (one conversion cycle, no pipeline delay), excellent DC accuracy, and low power consumption at modest sample rates. The MAX1225ETC+ belongs to the Maxim/ADI precision ADC family (MAX1117-MAX1225 series), positioning it between slow precision sigma-delta converters and high-speed pipeline ADCs, and ideal for instrumentation, motor control, and data-acquisition systems. Key features include 1.5Msps throughput, true-differential analog inputs that reject common-mode noise, an integrated +2.5V internal reference (with external-reference option), low power dissipation (typically under 25mW at full speed), and a 4-wire SPI/QSPI/MICROWIRE-compatible digital interface. The 12-pin TQFN (4x4) package offers a compact footprint with an exposed pad for improved thermal performance and PCB ground reference. The MAX1225ETC+ uses a charge-redistribution SAR architecture with input tracking and hold, achieving INL typically within +/-0.5 LSB and DNL within +/-0.5 LSB for true 12-bit linearity. The integrated +2.5V reference provides tight initial accuracy and low drift, eliminating the need for an external reference in many applications. Typical applications include portable data-acquisition systems, process and motor control loops, industrial instrumentation, optical-sensor front ends, and medical instrumentation. The differential input architecture also suits it for transducer-bridge signal chains and thermocouple amplification where ground-noise rejection is critical. When designing with this device, place the 0.1uF input/output bypass capacitors as close as possible to the supply pins, and connect the exposed pad to a clean analog ground plane. The serial clock can run up to ~24MHz at 1.5Msps, so route SCLK/SDOUT traces over a continuous ground plane to preserve signal integrity. This page synthesizes distributor stock and pricing, drop-in pin-compatible alternatives, and practical layout guidance not always presented in the manufacturer datasheet.

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MAX1228ACEP+

MAX1228ACEP+ - 12-Bit 300ksps 12-Ch ADC + Temp Sensor | Maxim

The Maxim Integrated (now Analog Devices) MAX1228ACEP+ is a 12-bit, 300 ksps, 12-channel successive-approximation analog-to-digital converter with an internal 4.096 V reference, internal temperature sensor (±1 degree C accuracy), 16-entry FIFO, and AutoShutdown. Housed in a 20-pin QSOP (SSOP) package with gull-wing leads, this serial-output ADC combines a true-differential analog multiplexer, scan mode, internal averaging, and an internal clock mode, all consuming a few milliwatts from a single 4.75 V to 5.25 V analog supply. What is a SAR ADC? A successive-approximation-register analog-to-digital converter is a precision data-conversion topology that resolves a sample one bit at a time using an internal DAC and comparator, achieving 12-bit resolution in tens of microseconds without the latency or pipeline delay of a pipelined converter. SAR ADCs sit in the broader hierarchy of data converters (ADC), under mixed-signal ICs and integrated circuits, and are preferred for multiplexed precision sampling in industrial control and instrumentation where low latency and DC accuracy matter more than multi-MHz sampling rates. Key features include 12-bit resolution with no missing codes, 300 ksps maximum throughput on a single channel, an analog multiplexer with 6 or 12 inputs that can be configured as single-ended or pseudo-differential channels, an internal 4.096 V reference with low drift, and a 16-entry FIFO that offloads the host controller by allowing burst conversions without per-sample interrupt overhead. The integrated temperature sensor with plus or minus 1 degree C accuracy eliminates an external thermistor for system thermal monitoring. Architecture-wise, the MAX1228 uses a charge-redistribution DAC in the SAR loop, an input track-and-hold that accepts true-differential inputs common-mode up to the rails, an SPI/QSPI/MICROWIRE-compatible serial interface, and a sequencer that supports both scan mode (autonomous channel cycling) and single-channel conversions. AutoShutdown reduces supply current to a few microamps between conversions, making the part attractive for battery-backed data loggers. Typical applications include process control and factory automation, multichannel data acquisition systems, patient monitoring and medical instrumentation, portable battery-powered data loggers, and system temperature monitoring with sensor compensation. When designing with this ADC, place the 0.1 uF AVVDD bypass and the 10 uF reference bypass capacitor within 5 mm of their respective pins. For best noise performance, use a buffered external reference source if the internal 4.096 V ref accuracy is insufficient for the application - the reference pin can source up to 1 mA. This page synthesizes distributor pricing, drop-in same-package alternatives, parametric comparisons, and practical design notes beyond the bare datasheet, including a same-package vs same-package trade-off matrix.

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Subcategorías

Productos (39.000+)

MAX120CNG+ - 12-Bit 500ksps SAR ADC | Maxim Integrated

MAX120CWG - 500ksps 12-Bit ADC w/ T/H & Reference | Maxim Integrated

MAX120EAG+ 12-Bit 500ksps SAR ADC | Maxim Integrated

MAX120ENG+ - 12-Bit 500ksps SAR ADC | Maxim Integrated

MAX120EWG+ - 12-Bit 500ksps SAR ADC | Maxim Integrated

MAX1211ETL+T - 65Msps 12-Bit IF Sampling ADC | Analog Devices

MAX1215EGK+TD - 12-Bit 250Msps ADC | Maxim Integrated

MAX1217ECQ+TD - Dual 12-Bit 125Msps ADC | Analog Devices

MAX1218ECQ+D - Dual 12-Bit 170Msps ADC | Maxim Integrated

MAX1218ECQ+TD - Dual 12-Bit 170Msps ADC, 100-TQFP | Maxim Integrated

MAX1219ECQ+D - 12-Bit 210Msps Dual ADC | Maxim Integrated

MAX1219ECQ+TD - Dual 12-Bit 210Msps ADC, 1.8V | Maxim Integrated

MAX121CAP+ - 14-Bit 308ksps SAR ADC | Analog Devices

MAX121CPE+ - 14-Bit 308ksps ADC | Analog Devices

MAX121CWE+ - 14-Bit 308ksps ADC | Maxim Integrated

MAX121EAP+ - 14-Bit 308ksps ADC | Maxim Integrated

MAX121EPE+ 14-Bit 308ksps ADC | Maxim Integrated

MAX121EWE+ - 14-Bit 308ksps ADC | Analog Devices

MAX121MJE - 14-bit 308ksps Serial ADC, CDIP-16 | Maxim/ADI

MAX1224CTC+ - 12-Bit 1.5Msps SAR ADC | Maxim Integrated | TQFN-12

MAX1225CTC+ - 12-Bit 1.5Msps Differential ADC | Maxim Integrated

MAX1225CTC+T - 12-Bit 1.5Msps Diff ADC | Maxim Integrated

MAX1225ETC+ - 12-Bit 1.5Msps SAR ADC | Maxim Integrated

MAX1228ACEP+ - 12-Bit 300ksps 12-Ch ADC + Temp Sensor | Maxim