Analog Devices Inc./Maxim Integrated MAX11253EVKIT#

Overview

MAX11253EVKIT# from Maxim Integrated is an evaluation kit for the MAX11253 - a 16-bit, 6-channel, 64ksps delta-sigma ADC with integrated 6.2nV/√Hz PGA (gain 1–128x), SPI interface, and TQFN-32 package. It supports precision DC measurements in battery-powered instrumentation, weigh scales, and industrial analog I/O systems.

For engineers reviewing the MAX11253EVKIT# datasheet, MAX11253EVKIT# setup guide, MAX11253EVKIT# schematic, or MAX11253EVKIT# compatibility with MAX11253 ADC hardware, this kit provides verified signal chain validation, configurable gain/offset calibration, and direct interface to microcontrollers via SPI - enabling rapid prototyping of high-resolution sensor acquisition systems.

Technical Context

The MAX11253EVKIT# implements the full signal path of the MAX11253 ADC, including its fourth-order delta-sigma modulator, variable-decimation SINC digital filter, and programmable gain amplifier with 1–128x settings. It supports both internal 8.192MHz oscillator and external clock modes, and enables bipolar/unipolar input configuration via CTRL1 register.

Hardware features include on-board 1μF AVDD/DVDD decoupling, 1nF C0G PGA filter capacitors (CAPP/CAPN), 220nF CAPREG bypass, and configurable GPIO/SYNC/RSTB routing. The kit operates across –40°C to +125°C and accepts dual ±1.8V or single 2.7V–3.6V analog supplies - matching the MAX11253's supply flexibility.

Key Specifications

Availability

MAX11253EVKIT# is available at Aetrix Electronics and suitable for industrial analog I/O design, battery-powered instrumentation prototyping, and precision sensor interface development requiring stable component supply and documented evaluation platform support.

Supply support for MAX11253EVKIT# 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, mixed-signal, and power management ICs for industrial, medical, and automotive applications.

The MAX11253EVKIT# belongs to Maxim's precision data acquisition evaluation platform family, engineered to accelerate development of low-power, high-resolution sensor interfaces using delta-sigma ADCs with integrated PGAs and flexible digital control.

FAQ

What is the primary function of the MAX11253EVKIT#?

The MAX11253EVKIT# is a fully assembled and tested evaluation platform for the MAX11253 16-bit, 6-channel delta-sigma ADC. It enables hardware validation of key features including PGA gain programming (1x–128x), SPI communication, self/system calibration, and differential input acquisition - directly supporting design-in of the MAX11253 in industrial and portable measurement systems.

Does the MAX11253EVKIT# support both single-ended and differential analog inputs?

No - the MAX11253EVKIT# is designed exclusively for fully differential operation, consistent with the MAX11253's native 6-channel differential input architecture (AIN0P/AIN0N through AIN5P/AIN5N). It does not provide single-ended input termination or conversion mode; all analog inputs must be driven differentially per the MAX11253's specified CMIRNG and VIN(DIFF) ranges.

Can the MAX11253EVKIT# operate with split analog supplies (±1.8V)?

Yes - the MAX11253EVKIT# supports split analog supplies. Its AVDD and AVSS power entry points accept ±1.8V, enabling true bipolar input sampling below ground. This matches the MAX11253's absolute maximum rating (AVSS to DGND: –1.95V to +0.3V) and allows unipolar/bipolar transfer function selection via the U/B bit in CTRL1 register.

What clocking options does the MAX11253EVKIT# support for the MAX11253 device?

The MAX11253EVKIT# supports both internal and external clocking. It uses the MAX11253's factory-trimmed 8.192MHz internal oscillator by default, but also provides access to the GPIO0/CLK pin for external clock injection - allowing synchronization across multiple MAX11253 devices or alignment to system timing references.

How is calibration performed on the MAX11253EVKIT#?

Calibration on the MAX11253EVKIT# is executed via SPI commands to the MAX11253's internal registers. Self-calibration (zero/gain) and system calibration (using external reference) are both supported, each requiring 48 additional master clocks - reducing effective data rate as documented in Table 1. The kit's firmware and GUI tools expose these register writes for repeatable, traceable calibration workflows.