Analog Devices Inc./Maxim Integrated MAX1231BEVKIT#

Overview

MAX1231BEVKIT# from Maxim Integrated is an evaluation kit for the MAX1231 - a 12-bit, 300ksps serial ADC with integrated temperature sensor, 16-channel analog multiplexer, 16-entry FIFO, and internal 2.5V reference. It supports single-ended/differential unipolar/bipolar inputs and operates from a +3V supply. Designed for rapid prototyping of precision data-acquisition systems in industrial monitoring and patient instrumentation.

For engineers reviewing the MAX1231BEVKIT# datasheet, MAX1231BEVKIT# pinout, MAX1231BEVKIT# application, or MAX1231BEVKIT# equivalent, this kit enables immediate validation of the MAX1231's scan mode, internal averaging, AutoShutdown™, SPI/QSPI/MICROWIRE interface timing, and temperature-sensing accuracy (±0.7°C at +25°C) without custom PCB design.

Technical Context

The MAX1231BEVKIT# provides full hardware access to the MAX1231's 28-pin TQFN-EP and 24-pin QSOP variants, supporting all clock modes (CKSEL = 00–11), differential track-and-hold operation, and FIFO-based burst acquisition. It routes all 16 analog inputs (AIN0–AIN15), REF+/REF−, CNVST, EOC, and the 3-wire serial interface (SCLK/CS/DIN/DOUT) to test points and headers.

Onboard circuitry includes configurable reference options (internal 2.5V or external differential), decoupling for VDD/GND, and jumper-selectable power modes (active vs. AutoShutdown™). The kit implements the exact timing constraints specified for tACQ (0.6µs min), tCONV (2.7µs max), and SCLK (up to 10MHz, 40–60% duty cycle).

Key Specifications

Availability

MAX1231BEVKIT# is available at Aetrix Electronics and suitable for industrial control systems, patient monitoring devices, and data-logging applications requiring stable component supply and rapid ADC validation.

Supply support for MAX1231BEVKIT# 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 high-performance analog, mixed-signal, and power-management ICs for industrial, medical, and communications applications.

The MAX1231BEVKIT# belongs to Maxim's precision data-acquisition evaluation platform family, designed to accelerate development of low-power, multichannel measurement systems with integrated signal conditioning and digital interfacing.

FAQ

What is the primary function of the MAX1231BEVKIT#?

The MAX1231BEVKIT# is an evaluation kit that provides complete hardware and firmware infrastructure to evaluate the MAX1231 12-bit, 300ksps ADC. It allows engineers to verify key features including 16-channel analog input scanning, internal FIFO buffering, temperature sensing (±0.7°C accuracy), SPI/QSPI interface timing, and internal 2.5V reference performance - all without designing custom PCBs or writing low-level drivers.

Does the MAX1231BEVKIT# support both TQFN and QSOP packages of the MAX1231?

Yes, the MAX1231BEVKIT# is designed to accommodate both the 28-pin 5mm × 5mm TQFN-EP and 24-pin QSOP packages of the MAX1231. It includes dual-footprint solder pads and zero-ohm jumper options to route signals correctly for either package, ensuring full pin compatibility and signal integrity across both variants.

Can the MAX1231BEVKIT# be used to validate differential input configurations and true differential track-and-hold operation?

Yes, the MAX1231BEVKIT# provides direct access to all differential input pairs (AIN0/AIN1, AIN2/AIN3, ..., AIN14/AIN15) and supports configuration via the MAX1231's setup register. It maintains matched trace lengths and ground isolation required for true differential acquisition, enabling validation of ±VREF/2 bipolar range, common-mode noise rejection, and INL/DNL performance (±1 LSB) under real-world signal conditions.

How does the MAX1231BEVKIT# handle the MAX1231's AutoShutdown™ feature and low-power operation?

The MAX1231BEVKIT# includes jumpers and test points to configure and measure the MAX1231's AutoShutdown™ behavior. It validates shutdown current ≤5µA and active-mode current of 1mA at 300ksps, with onboard power monitoring enabling precise measurement of IDD vs. sampling rate, temperature, and reference selection - matching the specifications in the MAX1231 datasheet.

Is firmware or PC software included with the MAX1231BEVKIT# for communication and data capture?

The MAX1231BEVKIT# ships with Windows-compatible evaluation software and GUI-based configuration tools that support full register access, FIFO readout, temperature conversion, and real-time waveform plotting. It includes preverified SPI command sequences for all clock modes (00–11), scan configurations, and averaging settings - enabling immediate functional validation of the MAX1231 without custom code development.