ZSC31050 Datasheet | Renesas

Advanced Differential Sensor Signal Conditioner Description ZSC31050 is a CMOS integrated circuit for highly accurate amplification and sensor-specific correction of bridge sensor and temperature sensor signals. The device provides digital pensation of sensor offset, sensitivity, temperature drift, and nonlinearity via a 16-bit RISC microcontroller running a polynomial correction algorithm. The ZSC31050 acmodates virtually any bridge sensor type (e.g., piezo-resistive, ceramic thick-film, or steel membrane based). In addition, it can interface to a separate temperature sensor. The bi-directional digital interfaces (I2C, SPI, and ZACwire™) can be used for a simple PC-controlled one-pass calibration procedure to program a set of calibration coefficients into an on-chip EEPROM. A specific sensor and a ZSC31050 can be mated digitally: fast, precise, and without the cost overhead associated with trimming by external devices or laser. The ZACwire™ interface enables an endof-line calibration of the sensor module. Typical applications for the ZSC31050 include industrial, medical, and consumer products. It is specifically engineered for most resistive bridge sensors; e.g., sensors for measuring pressure, force, torque, acceleration, angle, position, and revolution. Features - Digital pensation of sensor offset, sensitivity, temperature drift, and nonlinearity - Acmodates nearly all resistive bridge sensor types (signal spans from 1m V/V up to 275m V/V) - Digital one-pass calibration: quick and precise - Selectable pensation temperature source: bridge, thermistor, or internal or external diode - Output options: voltage (0 to 5V), current (4 to 20m A), PWM, I2C, SPI, ZACwire™ (one-wire interface), alarm - Adjustable output resolution (up to 15 bits) versus sampling rate (up to 3.9k Hz) - Current consumption: 2.5m A (typical) - Selectable bridge excitation: ratiometric voltage, constant voltage, or constant current - Input channel for separate...