Evaluation Board for iC-HO

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iC-HO suits for various applications: mass flow metering, gas sensing and pressure sensing. Besides the IC only a few external components are required: a cost effective microcontroller and/or an EEPROM, and the sensor itself. iC-HO is completely controllable and monitorable by the microcontroller via SPI. Alternatively, stand-alone applications can boot from the CRCsecured external SPI EEPROM.

Instrumentation PGA inputs allow gain and offset calibration, and temperature stabilization. An integrated look-up table (LUT) featuring 9 breakpoints can be used to correct nonlinear sensor characterstics directly within the sensor interface IC.

A digital PI-controller is available to drive a wide range of MEMS heater resistors with up to 115 mW in an absolute or relative temperature range from -25 °C to + 660 °C. A fixed set point or sequence controller mode can be selected.

Matching constant current sources are available to bias up to three sensor resistors. The analog ratiometric differential output signal is implemented with a 10-bit D/A converter.


• Flow Sensors
• Pressure Sensors
• Gas Sensors

Symmetry Electronics (and its e-commerce division: SemiconductorStore.com) is an authorized iC-Haus distributor.

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Evaluation Board for iC-HO
Evaluation Board for iC-HO