Analog Devices Inc./Maxim Integrated MAX11254EVKIT#

Overview

MAX11254EVKIT# from Maxim Integrated is an evaluation kit for the MAX11254 24-bit, 6-channel delta-sigma ADC with integrated 6.2nV/√Hz PGA, SPI interface, 64ksps max sample rate, and ±1.8V split-supply operation - designed for precision analog I/O in programmable logic controllers and battery-powered instrumentation.

For engineers reviewing the MAX11254EVKIT# datasheet, MAX11254EVKIT# pinout, MAX11254EVKIT# application, or MAX11254EVKIT# equivalent, this kit enables rapid validation of high-resolution DC measurements, low-power sensor interfacing, PGA gain calibration, and synchronized multi-ADC timing in industrial and automotive systems.

Technical Context

The MAX11254EVKIT# supports full characterization of the MAX11254's fourth-order delta-sigma modulator, variable-decimation SINC digital filter, and programmable gain amplifier (1x–128x) across single-cycle and continuous conversion modes. It implements the device's internal 8.192MHz oscillator or external clock synchronization via GPIO0/CLK and GPIO1/SYNC pins.

This kit validates critical performance under real-world conditions: 133dB SNR at 50sps, 2.2mA active current, 1μA sleep current, and AEC-Q100-qualified operation from –40°C to +125°C - all while maintaining differential input integrity across six fully differential channels (AIN0P/N through AIN5P/N).

Key Specifications

Availability

MAX11254EVKIT# is available at Aetrix Electronics and suitable for analog I/O development for programmable logic controllers, weigh scales, pressure sensor systems, and battery-powered instrumentation requiring stable component supply and rapid prototyping support.

Supply support for MAX11254EVKIT# 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) designs high-performance analog and mixed-signal ICs for industrial, automotive, and medical applications - emphasizing precision, low power, and system-level integration.

The MAX11254 product line delivers ultra-high-resolution data acquisition for demanding DC-coupled sensing applications, combining low-noise PGA, flexible supply architecture, and robust digital filtering in a compact TQFN package.

FAQ

What is the primary function of the MAX11254EVKIT#?

The MAX11254EVKIT# is an evaluation platform for the MAX11254 24-bit delta-sigma ADC. It provides complete hardware and software resources to validate the device's 6-channel differential input capability, programmable gain amplifier (1x–128x), SPI interface, and low-power operation - enabling rapid development of precision analog front-ends for industrial and automotive systems. The MAX11254EVKIT# includes reference schematics, layout files, and firmware examples to accelerate design-in of the MAX11254.

Does the MAX11254EVKIT# support both single-supply and split-supply configurations for the MAX11254?

Yes, the MAX11254EVKIT# supports both configurations: it can operate the MAX11254 with a single 2.7V–3.6V analog supply (AVDD to AVSS) or split ±1.8V supplies - allowing analog inputs to extend below ground for bipolar sensor interfaces. The board provides configurable jumpers and dedicated supply rails to validate either mode, including proper decoupling for AVDD, AVSS, DVDD, and CAPREG as specified in the MAX11254 datasheet.

Can the MAX11254EVKIT# demonstrate synchronized multi-ADC operation?

Yes, the MAX11254EVKIT# supports synchronized operation via the GPIO1/SYNC pin, which resets both the digital filter and modulator. Multiple MAX11254EVKIT# boards can be daisy-chained using external trigger signals to align conversion timing across devices - essential for phase-coherent measurements in motor control or vibration analysis. This capability is directly enabled by the MAX11254's SYNC functionality and verified in the kit's reference firmware.

What calibration features of the MAX11254 are accessible through the MAX11254EVKIT#?

The MAX11254EVKIT# provides full access to on-demand offset and gain calibration registers in the MAX11254, supporting both self-calibration (internal reference) and system calibration (external reference). Users can execute calibration sequences via the included GUI or command-line tools, verifying zero-error correction (<1µV), full-scale error drift (0.05ppmFSR/°C), and PGA gain accuracy (±2% at G=128) - all traceable to the MAX11254's documented electrical characteristics.

Is the MAX11254EVKIT# AEC-Q100 qualified?

The MAX11254EVKIT# itself is not qualified, but it is designed to evaluate the AEC-Q100-qualified MAX11254 /V variants (e.g., MAX11254GWE+). The kit's PCB layout, thermal design, and test procedures follow automotive-grade practices to ensure accurate validation of the MAX11254's –40°C to +125°C operation, 1μA sleep current, and robust PSRR performance - confirming compliance with AEC-Q100 stress test requirements for the underlying IC.