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.

FEATUREs
• Ultra-low offset and low-noise PGA inputs
• 11-bit analog to digital conversion
• Signal offset correction
• Configurable temperature drift compensation
• Linearization of sensor characteristic by look-up table
• Measurement data output digital and analog (10-bit D/A)
• Differential output of ratiometric voltage
• Adjustable PI heater control
• Signal and system monitoring functions
• Fault indication at open-drain error output
• Sensor resistor bias by adjustable current sources
• Integrated 8-bit temperature sensing
• SPI-master (for EEPROM) and SPI-slave interfaces for
   device configuration and controller operation
• 5 V supply voltage
• Operating temperature range of -20 °C to 105 °C

APPLICATIONs
• Flow Sensors
• Pressure Sensors
• Gas Sensors