Microchip Technology Inc. Launches MCP9604: A Game-Changer in Thermocouple Measurement

On September 25, 2025, Microchip Technology Inc. (Nasdaq: MCHP) announced the launch of its groundbreaking MCP9604 integrated thermocouple conditioning IC, a device that promises to revolutionize temperature measurement across various industrial applications. This innovative single-chip solution offers precision four-channel temperature measurement with an impressive system accuracy of ±1.5°C. It addresses the critical need for high-accuracy thermal measurements in sectors such as chemical processing, food manufacturing, medical equipment, and HVAC systems.

Keith Pazul, vice president of Microchip’s mixed-signal linear business unit, emphasized the significance of the MCP9604 in overcoming longstanding barriers in thermocouple measurement. “For more than two centuries, the thermocouple has been a critical tool for measuring extremely high temperatures, but the necessary precision and accuracy could not be achieved with the level of integration and cost-effectiveness that is required for today’s demanding production-line applications,” he stated.

The MCP9604 stands out as the first single-chip, four-channel I2C thermocouple conditioning IC, eliminating the need for multiple discrete components that can introduce errors and complicate system design. By reducing the number of components from as many as 15, the MCP9604 simplifies PCB design and significantly lowers bill of materials costs.

The MCP9604 delivers its advanced measurement capabilities using higher-order NIST ITS-90 equations rather than relying on the traditional single-order linear approximations typically found in analog amplifier designs. This allows the device to achieve ninth-order accuracy with K-type thermocouples, consolidating the entire signal chain—including ADCs, cold junction compensation temperature sensors, amplifiers, and requisite components—into one integrated chip.

One of the key features of the MCP9604 is its versatility, supporting the eight most common thermocouple types, including options for temperatures as low as -200°C and up to +1372°C. This broad temperature range makes the MCP9604 suitable for various industrial applications, while its I2C communication capability facilitates seamless integration with microcontrollers and other digital systems.

The MCP9604 builds upon the earlier success of Microchip’s single-channel thermocouple conditioning IC, which was the first all-in-one device to deliver ±1.5°C accuracy. The foundational competencies developed during that project have enabled the transition to a four-channel device, further enhancing the capabilities of I2C thermocouple conditioning solutions.

To aid in the implementation of the MCP9604, Microchip offers the EV19L27A evaluation board, which allows users to connect and read data from up to four thermocouples. This board includes a microcontroller that serves as a host system for data collection and visualization. Additionally, the evaluation board comes with free software, available for download from the MCP9604 or EVB web pages, making it easier for developers to get started.

The MCP9604 thermocouple conditioning IC is now available in both tape-in-reel (MCP9604T-E/3YW) and rail (MCP9604-E/3YW) configurations, priced at $10.56 each for orders of 10,000 units. It is packaged in a 24-pin 5x5 Land Grid Array (LGA). The EV19L27A evaluation board is priced at $96.00 and is also available for immediate purchase.

Microchip Technology Inc.'s MCP9604 represents a significant advancement in thermocouple measurement technology, providing industry-leading accuracy and integration to meet the demands of today's production environments. As organizations seek to streamline their temperature measurement solutions, the MCP9604 stands to become an essential component in their operational toolkit. For more information and purchasing options, interested parties can reach out to Microchip representatives or authorized distributors.