Highly Integrated IO-Link Temperature Sensor Outperforms Discrete Alternative s

SAN JOSE, CA -- Designers can save power, cost, and space with the MAXREFDES42# IO-Link temperature sensor reference design (RD) from Maxim Integrated Products, Inc.

The new MAXREFDES42# IO-Link resistance temperature detector (RTD) joins the company's portfolio of other IO-Link reference designs for industrial control and automation. This design's highly integrated analog front end (AFE) measures temperature, while detecting overvoltage, shorts, and open circuits. This is a set of capabilities not found in competitive discrete solutions. The reference design consumes minimal power and provides better than +/-.5°K accuracy. The temperature appears immediately on an LED display for a quick and convenient snapshot of coarse temperature values.

For user convenience, MAXREFDES42# fits in a standard industrial form factor. For versatility, it supports all three IO-Link speeds—no other competing device can do this. The MAXREFDES42# is available for use with a 2-wire, 3-wire, or 4-wire PT100 RTD over a wide temperature range. Applications include air, gas, and liquid temperature measurement.

The configuration software for this smart IO-Link temperature detector was developed in collaboration with IQ2 Development. The MAXREFDES42# uses their IO-Link device stack to communicate with any IO-Link version 1.1-compliant master. This software control lowers operating cost because it enables fast setup, diagnosis, and event monitoring from a PC and without a trip to the installation site. Maintenance can be done at the PC and not on the floor.

Key Advantages

•Low Power: during operation over a temperature range of -40°C to 150°C, the system consumes less than 300mW of power by utilizing an industrial DC-DC step-down converter.
•Highly Integrated: integrated into the front-end is the MAX31865 RTD-to-digital converter which provides flexibility, robustness, and optimal performance for an IO-Link platform.
•Cost Savings: PC control with IQ2 software saves configuration and maintenance cost and increases uptime.


•"We are adding this smart temperature sensor to our quiver of IO-Link reference designs to provide our customers with specific, highly integrated solutions," said David Andeen, Director of Reference Designs at Maxim Integrated. "Our highly integrated RTD-to-digital converter and IO-Link transceiver create a design rich in benefits with many, clear applications in the industrial space."
•"Maxim and IQ2 are two companies on the cutting edge of IO-Link," said Frank Hörz, Project Manager at IQ2. This collaboration represents another successful design that can reduce our customers' time to market and lower their operational costs too."

Availability and Pricing

The MAXREFDES42# reference design is available for $99.

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