Analog Devices Inc./Maxim Integrated MAX31875EVKIT#

Overview

MAX31875EVKIT# from Maxim Integrated is an evaluation kit designed to demonstrate the MAX31875 ±2°C-accurate local temperature sensor with I²C/SMBus interface. It includes the MAX31875ROTZS+ sensor in WLP4 package, USB2PMB2 master interface board, Micro-USB cable, and Windows-compatible GUI software for real-time temperature monitoring and register configuration.

For engineers reviewing the MAX31875EVKIT# datasheet, MAX31875EVKIT# pinout, MAX31875EVKIT# application, or MAX31875EVKIT# equivalent, this kit enables rapid validation of sensor accuracy, I²C communication timing, conversion rate control (0.25Hz/1Hz/4Hz/16Hz), shutdown mode behavior, and hysteresis/OS threshold programming in thermal management systems.

Technical Context

The MAX31875EVKIT# implements a complete I²C-based evaluation platform using the USB2PMB2 adapter as a bridge between Windows PC and the MAX31875PMB1 board. The hardware supports all eight I²C slave addresses of the MAX31875 family via software-selectable device identification.

Software functionality includes real-time temperature plotting, one-shot reads (requiring Shutdown mode entry), full register read/write access (Temperature, Configuration, THyst, TOS), and configurable conversion rates determined by the 0x06 register's Conversion Rate[1:0] bits.

Key Specifications

Availability

MAX31875EVKIT# is available at Aetrix Electronics and suitable for thermal validation, sensor firmware development, I²C protocol testing, and embedded temperature monitoring system prototyping requiring stable component supply and traceable evaluation hardware.

Supply support for MAX31875EVKIT# 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 precision analog, mixed-signal, and digital ICs for industrial, automotive, communications, and computing applications.

The MAX31875EVKIT# belongs to Maxim's precision temperature sensor evaluation platform family, developed to accelerate design-in of high-accuracy local sensing solutions in space-constrained, low-power systems.

FAQ

What does the MAX31875EVKIT# evaluate and what components are included?

The MAX31875EVKIT# evaluates the MAX31875 ±2°C-accurate local temperature sensor. It includes the MAX31875ROTZS+ on the MAX31875PMB1 board, USB2PMB2 USB-to-I²C adapter, Micro-USB cable, and Windows GUI software (MAX31875EVKit.exe). No soldering or assembly is required - the board is fully assembled and tested.

Does the MAX31875EVKIT# require external pull-up resistors for I²C operation?

Yes - if the USB2PMB2 interface board is not used, a 2.2kΩ pull-up resistor must be connected from both SDA and SCL lines to VDD. The MAX31875EVKIT# schematic explicitly notes this requirement to ensure compliant I²C bus signaling when alternative master interfaces are employed.

How does the MAX31875EVKIT# support different MAX31875 I²C addresses?

The MAX31875EVKIT# GUI supports all eight I²C slave addresses of the MAX31875 family. During device detection, the "Attached Device Search" scans the I²C bus and identifies the connected sensor by its unique address, enabling seamless evaluation regardless of the specific variant (e.g., MAX31875A, MAX31875B) installed on the board.

Can the MAX31875EVKIT# perform single-shot temperature measurements?

Yes - the MAX31875EVKIT# GUI includes a "One-Shot Read" button that triggers a single temperature conversion. This function requires the MAX31875 to be in Shutdown mode first, as specified in the MAX31875 datasheet and implemented in the MAX31875EVKIT# software logic.

What sample rates are configurable through the MAX31875EVKIT# GUI?

The MAX31875EVKIT# GUI allows selection of four conversion rates via the 0x06 register's Conversion Rate[1:0] field: 0.25Hz, 1Hz, 4Hz, or 16Hz. These values correspond directly to the MAX31875's internal timing architecture and are reflected in the real-time plot update interval during continuous sampling.