Analog Devices Inc./Maxim Integrated MAX1402EVKIT+

Overview

MAX1402EVKIT+ from Maxim Integrated is an evaluation kit for the MAX1402 18-bit sigma-delta ADC, designed to accelerate development of low-power, multichannel sensor measurement systems. It supports full characterization of the device's 3 fully differential or 5 pseudo-differential input channels, matched 200µA excitation current sources, and programmable gain (1–128 V/V) - enabling rapid prototyping in portable industrial instruments and loop-powered transducer interfaces.

For engineers reviewing the MAX1402EVKIT+ datasheet, MAX1402EVKIT+ setup guide, MAX1402EVKIT+ schematic, or MAX1402EVKIT+ board layout, this kit provides verified hardware reference, SPI/QSPI-compatible interface validation, real-time data capture at up to 480sps with 16-bit no-missing-codes accuracy, and line-frequency rejection tuning via configurable digital decimation filter notch placement at 50Hz/60Hz.

Technical Context

The MAX1402EVKIT+ implements a complete test environment for the MAX1402 ADC, including on-board +5V analog and +3V/+5V digital power regulation, buffered reference circuitry, selectable master clock (1.024MHz or 2.4576MHz), and jumper-configurable input routing for all six analog inputs (AIN1–AIN6), two calibration channels (CALGAIN±, CALOFF±), and reference inputs (REFIN±). It enables direct evaluation of the ADC's auto-channel-scanning mode, offset/gain error correction, and transducer burn-out detection.

Hardware features include header-accessible INT, DOUT, DIN, SCLK, and CS signals compatible with standard logic analyzers or microcontroller SPI peripherals; onboard RESET pushbutton; and test points for V+, VDD, AGND, DGND, and all analog signal paths - supporting both unipolar and bipolar input range validation under temperature-stable lab conditions.

Key Specifications

Availability

MAX1402EVKIT+ is available at Aetrix Electronics and suitable for portable industrial instruments, pressure transducer development, and loop-powered system design requiring stable component supply, traceable evaluation hardware, and immediate access to production-ready reference schematics and layout files.

Supply support for MAX1402EVKIT+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in precision analog, mixed-signal, and high-reliability ICs for industrial, medical, and automotive applications.

The MAX1402EVKIT+ belongs to Maxim's precision data acquisition evaluation platform family, engineered to de-risk sensor interface design by delivering validated signal chain performance, factory-calibrated reference operation, and comprehensive software support for the MAX1402 ADC's full feature set.

FAQ

What is the primary function of the MAX1402EVKIT+?

The MAX1402EVKIT+ is an evaluation kit for the MAX1402 18-bit sigma-delta ADC. It provides a fully assembled and tested PCB with power regulation, clock generation, signal conditioning, and interface headers to enable rapid functional validation, performance characterization, and firmware integration of the MAX1402 in sensor measurement applications - without requiring custom hardware design.

Does the MAX1402EVKIT+ support both 1.024MHz and 2.4576MHz master clock frequencies?

Yes, the MAX1402EVKIT+ supports both 1.024MHz and 2.4576MHz master clock frequencies via onboard jumpers and crystal oscillator options. This allows users to configure the MAX1402's digital decimation filter for optimal 50Hz or 60Hz line-frequency rejection, as specified in the MAX1402 datasheet, and validate performance across different output data rates up to 480sps.

Can the MAX1402EVKIT+ be used to evaluate transducer excitation and burn-out detection?

Yes, the MAX1402EVKIT+ exposes both OUT1 and OUT2 transducer excitation current outputs (200µA each, matched within ±1%) and includes test points and routing for connecting resistive or bridge sensors. It supports full evaluation of the MAX1402's built-in burn-out detection circuitry, including compliance voltage monitoring and fault flag reporting via the INT pin and register reads.

Is the MAX1402EVKIT+ compatible with standard SPI microcontrollers?

Yes, the MAX1402EVKIT+ uses a standard 3-wire SPI-compatible interface (CS, SCLK, DIN/DOUT) with active-low chip select and interrupt output (INT). All digital signals are level-shifted and buffered to interface directly with 3.3V or 5V microcontrollers, and timing complies with MAX1402's published specifications - enabling seamless integration with common development platforms like Arduino, STM32, and Renesas RX series.

Does the MAX1402EVKIT+ include software or PC interface tools?

Yes, the MAX1402EVKIT+ ships with Maxim's EV-kit software suite, including Windows-based GUI for real-time data capture, register configuration, FFT analysis, and export of CSV waveform logs. The software communicates via USB-to-serial adapter (included) and supports full read/write access to all MAX1402 control registers, calibration DACs, and data registers - accelerating algorithm development and system-level verification.