Analog Devices Inc./Maxim Integrated MAX11158EVKIT#

Overview

MAX11158EVKIT# from Maxim Integrated is an evaluation kit for the MAX11158 18-bit, 500ksps pseudo-differential SAR ADC with ±5V true bipolar input range, integrated 4.096V reference, and 3mm × 5mm µMAX package. It enables rapid validation of high-accuracy data acquisition in industrial process control, medical instrumentation, and automatic test equipment.

For engineers reviewing the MAX11158EVKIT# datasheet, MAX11158EVKIT# pinout, MAX11158EVKIT# application, or MAX11158EVKIT# equivalent, this kit provides full hardware access to the MAX11158's SPI-compatible serial interface, daisy-chain capability, busy indicator timing, ±5V analog input stage, and internal reference buffer-supporting accurate DC/AC performance verification at 93.7dB SNR and -100.0dB THD.

Technical Context

The MAX11158EVKIT# implements a complete signal chain around the MAX11158 IC, including precision decoupling (10µF X5R on REF, 0.1µF on VDD/OVDD), low-noise op-amp interface (e.g., MAX9632), and configurable CNVST/SCLK/SDI/SDO routing. It supports both CS-mode and daisy-chain serial configurations with selectable busy-indicator operation.

Designed for direct connection to host controllers (FPGA, MCU, DSP), the kit exposes all 10 pins of the µMAX package-including AIN+, AIN-, REF, VDD, OVDD, GND, CNVST, SDO, SCLK, and SDI-with proper layout practices for high-impedance sampling, 0.5µs acquisition time, and <2.0 LSBRMS transition noise.

Key Specifications

Availability

MAX11158EVKIT# is available at Aetrix Electronics and suitable for industrial process control, medical instrumentation, automatic test equipment, and high-precision data acquisition systems requiring stable component supply and rapid prototyping capability.

Supply support for MAX11158EVKIT# 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 power management ICs for industrial, medical, and test & measurement applications.

The MAX11158EVKIT# belongs to Maxim's high-accuracy SAR ADC evaluation platform family, designed to accelerate validation of 16–18-bit converters in demanding DC/AC measurement environments with minimal external components.

FAQ

What is the primary function of the MAX11158EVKIT#?

The MAX11158EVKIT# is an evaluation kit that provides a fully assembled, tested hardware platform to evaluate the MAX11158 18-bit, 500ksps SAR ADC. It enables engineers to verify key performance metrics-including 93.7dB SNR, ±2.7 LSB INL, ±5V bipolar input operation, and SPI-compatible daisy-chain functionality-without designing custom PCBs. The MAX11158EVKIT# includes all necessary decoupling, interface circuitry, and pin-access for rapid system integration and characterization.

Does the MAX11158EVKIT# support daisy-chaining multiple MAX11158 devices?

Yes, the MAX11158EVKIT# supports daisy-chain configuration via its exposed SDI and SDO pins, matching the MAX11158's native 3-wire daisy-chain mode. When SDI is held low during the CNVST rising edge, the kit routes SDO to the next device's SDI, enabling synchronized multichannel sampling across up to 16+ ADCs on a single SDO line. Timing compliance-including tSCLK, tDSDO, and busy-indicator latency-is preserved per MAX11158 electrical specifications.

Can the MAX11158EVKIT# operate with the MAX11158's internal reference only, or does it require an external reference?

The MAX11158EVKIT# is designed to operate exclusively with the MAX11158's internal 4.096V reference, as confirmed by its onboard 10µF X5R capacitor directly connected to the REF pin per Maxim's layout guidelines. No external reference is required or supported-the kit validates the internal reference's ±7ppm/°C drift, 4.092–4.100V initial accuracy, and buffered output impedance (0.1Ω), ensuring full utilization of the MAX11158's integrated reference architecture.

What analog input protection features are implemented on the MAX11158EVKIT#?

The MAX11158EVKIT# implements the MAX11158's built-in overvoltage clamp circuitry, supporting ±7V absolute maximum input on AIN+ and ±0.1V on AIN−. It includes series current-limiting resistors (per Maxim's RS calculation guidance) to ensure fault currents remain within ±20mA when clamps activate. The kit also provides dedicated remote-sense ground routing for AIN− to preserve common-mode rejection (CMR) and minimize ground-loop errors in high-impedance sensor interfaces.

How does the MAX11158EVKIT# support low-noise signal conditioning for the MAX11158?

The MAX11158EVKIT# integrates the MAX9632 low-noise op-amp (1nV/√Hz, -128dB THD) as recommended in Maxim's datasheet, configured per the Typical Operating Circuit to drive AIN+. It includes a 2nF external capacitor at AIN+ to reduce transient-induced offset error and supports optional RC filtering to attenuate out-of-band noise-ensuring the MAX11158 achieves its specified 93.7dB SNR and 2.0 LSBRMS transition noise without degradation from front-end circuitry.