RENESAS ZSC31150GED

The ZSC31150 is a CMOS integrated circuit for highly accurate amplification and sensor-specific correction of bridge sensor signals. Digital compensation of sensor offset, sensitivity, temperature drift, and non-linearity is accomplished via an internal 16-bit RISC microcontroller running a correction algorithm, with calibration coefficients stored in an EEPROM. The ZSC31150 is adjustable to nearly all bridge sensor types. Measured values are provided at the analog voltage output or at the digital ZACwire™ and I2C interface. The digital interface can be used for a simple PC-controlled calibration procedure in order to program a set of calibration coefficients into an on-chip EEPROM. A specific sensor and a ZSC31150 can be mated digitally: fast, precise, and without the cost overhead associated with trimming by external devices or a laser.

• Digital compensation of sensor offset, sensitivity, temperature drift, and non-linearity
• Adjustable to nearly all bridge sensor types
• Analog gain of up to 420
• Output options: ratiometric analog voltage output (5% to 95% maximum, 12.4-bit resolution) or ZACwire™ (digital one-wire interface)
• Temperature compensation: internal or external diode, bridge resistance, thermistor
• Sensor biasing by voltage or constant current
• Sample rate: up to 7.8kHz
• High voltage protection up to 33V
• Supply current: max. 5.5mA
• Reverse polarity and short-circuit protection
• Wide operation temperature depending on part number: up to -40°C to +150°C
• Traceability by user-defined EEPROM entries
• Safety and diagnostic functions