The ZSSC3131 is a member of the ZSSC313x product family of CMOS integrated circuits designed for automotive and industrial sensor applications. All family members are well suited for highly accurate amplification and sensor-specific correction of resistive bridge sensor signals. An internal 16-bit RISC microcontroller running a correction algorithm compensates sensor offset, sensitivity, temperature drift, and non-linearity of the connected sensor element. The required calibration coefficients are stored by the One Pass calibration procedure in an on chip EEPROM.
The ZSSC3131 is optimized for simple switch and cost sensitive sensor applications. The integrated adjustable digital filter offers the possibility to setup fast switching real-time applications as well as stabilized applications in case of disturbed or unstable switching input signals.

• Adjustable to nearly all resistive bridge sensor types, analog gain of 105, overall gain up to 420
• Sample rate up to 200 Hz
• ADC Resolution 13/14 Bit
• Internal temperature compensation
• Integrated adjustable digital filter
• Digital compensation of sensor offset, sensitivity, temperature drift, and non-linearity
• Output options: Ratiometric analog voltage output (5 - 95% in maximum, 12.4 bit resolution) or ZACwire^TM (digital one-wire-interface)
• Sensor biasing by voltage
• High voltage protection up to 33 V
• Supply current: Max. 5.5mA
• Reverse polarity and short circuit protection
• Wide operation temperature range up to -40;+150°C
• Traceability by user-defined EEPROM entries

• Family approach offers the best fitting IC-selection to build up cost optimized applications
• No external trimming components required
• Low number of external components needed
• PC-controlled configuration and One-Pass/End-of-line calibration via I²C^TM or ZACwire^TM
• interface: Simple, cost efficient, quick, and precise
• High accuracy (0.25% FSO @ -25 to +85°C; 0.5% FSO @ -40 to +125°C)
• Optimized for automotive environment due to robust protection circuitries, excellent electromagnetic compatibility and AEC-Q100 qualification

For automotive and industrial switch applications

• Over/ under pressure switches for hydraulic/ pneumatic systems
• HVAC systems
• Cooling systems