Analog Devices Inc./Maxim Integrated MAX1240EVKIT#

Overview

MAX1240EVKIT# from Maxim Integrated is an evaluation kit designed to accelerate development and validation of the MAX1240/MAX1241 12-bit, low-power, serial analog-to-digital converters. It supports single-supply operation (2.7V–3.6V), delivers 73ksps throughput with 7.5µs conversion time, and enables rapid prototyping of battery-powered sensor interfaces using the integrated track/hold, internal 2.5V reference (MAX1240), and SPI/QSPI/MICROWIRE-compatible 3-wire interface.

For engineers reviewing the MAX1240EVKIT# datasheet, MAX1240EVKIT# pinout, MAX1240EVKIT# application, or MAX1240EVKIT# equivalent, this kit provides verified hardware for evaluating DC accuracy (±0.5 LSB INL), dynamic performance (70dB SINAD, 80dB SFDR), power-down mode (2µA), and analog input range (0V to VREF) under real-world layout and supply conditions.

Technical Context

The MAX1240EVKIT# implements a complete test platform for the MAX1240 ADC, including precision voltage reference buffering, configurable analog input conditioning, regulated +3.3V supply, and direct microcontroller I/O connectivity via header pins. It replicates the functional timing behavior of the MAX1240's 3-wire serial interface-supporting CS-initiated conversions, SCLK-synchronized DOUT data output (MSB-first, unipolar), and SHDN-controlled 2µA shutdown mode.

Board-level design incorporates star-ground separation between analog and digital domains, 0.1µF + 4.7µF REF bypassing, low-impedance VDD decoupling, and shielded routing for AIN to minimize noise coupling-enabling accurate measurement of aperture jitter (<50ps), acquisition time (1.5µs), and THD (-80dB).

Key Specifications

Availability

MAX1240EVKIT# is available at Aetrix Electronics and suitable for battery-powered systems, portable data logging, isolated data acquisition, and process control applications requiring stable component supply and rapid ADC validation.

Supply support for MAX1240EVKIT# 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, communications, and consumer applications.

The MAX1240EVKIT# belongs to Maxim's precision data acquisition evaluation kit family, engineered to simplify qualification of low-power, high-resolution ADCs in space-constrained, energy-sensitive designs.

FAQ

What is the primary purpose of the MAX1240EVKIT#?

The MAX1240EVKIT# is an evaluation kit that provides a fully assembled, tested hardware platform for validating the electrical and timing performance of the MAX1240 and MAX1241 12-bit serial ADCs. It allows engineers to verify key parameters-including INL, DNL, SINAD, THD, and power-down current-without designing custom circuitry, accelerating time-to-test for sensor interface and portable instrumentation applications.

Does the MAX1240EVKIT# support both MAX1240 and MAX1241 devices?

Yes, the MAX1240EVKIT# supports both the MAX1240 (with internal 2.5V reference) and MAX1241 (requiring external reference). The board includes jumpers and layout provisions to configure REF pin sourcing, bypass capacitor selection (4.7µF for MAX1240, 0.1µF minimum for MAX1241), and SHDN logic level to match either device's operational requirements.

Can the MAX1240EVKIT# be used with standard microcontrollers?

Yes, the MAX1240EVKIT# features standard 0.1-inch headers for SCLK, CS, DOUT, GND, VDD, AIN, REF, and SHDN-enabling direct connection to common microcontroller development boards. Its 3-wire serial interface is compatible with SPI, QSPI, and MICROWIRE protocols (CPOL=0, CPHA=0), and timing specifications (e.g., 240ns CS-to-DOUT enable, 200ns SCLK pulse width) are verified for reliable interfacing with ARM Cortex-M, PIC, and MSP430 MCUs.

How does the MAX1240EVKIT# ensure accurate analog measurements?

The MAX1240EVKIT# ensures measurement integrity through strict analog design practices: a dedicated star-ground point isolates analog and digital returns, low-noise LDO regulation supplies VDD, precision REF buffering minimizes loading effects, and optimized PCB layout separates analog signal paths from digital switching noise. These features directly support validation of the MAX1240's specified 70dB SINAD, <50ps aperture jitter, and ±0.5 LSB INL over temperature.

Is the MAX1240EVKIT# RoHS-compliant and lead-free?

Yes, the MAX1240EVKIT# is RoHS-compliant and uses lead(Pb)-free components and soldering processes, consistent with Maxim Integrated's environmental compliance standards. The board carries the "+" suffix designation per Maxim's ordering nomenclature, confirming its lead-free/RoHS status and suitability for modern electronics manufacturing.