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 compensation of sensor offset, sensitivity, temperature drift, and non-linearity via a 16-bit RISC microcontroller running a polynomial correction algorithm.
FEATUREs
◾ Digital compensation of sensor offset, sensitivity, temperature
drift, and nonlinearity
◾ Accommodates nearly all resistive bridge sensor types (signal
spans from 1mV/V up to 275mV/V)
◾ Digital one-pass calibration: quick and precise
◾ Selectable compensation temperature source: bridge,
thermistor, or internal or external diode
◾ Output options: voltage (0 to 5V), current (4 to 20mA), PWM,
I2C, SPI, ZACwire™ (one-wire interface), alarm
◾ Adjustable output resolution (up to 15 bits) versus sampling
rate (up to 3.9kHz)
◾ Current consumption: 2.5mA (typical)
◾ Selectable bridge excitation: ratiometric voltage, constant
voltage, or constant current
◾ Input channel for separate temperature sensor
◾ Sensor connection and common mode check (sensor aging
detection)
◾ AEC-Q100 qualification (temperature grade 0)
Typical Applications:
Consumer Goods
◾ Weight scales
◾ Flow meters
◾ Strain gauges
◾ Load meters
◾ HVAC
Industrial Applications
◾ 4-20mA transmitters
◾ Intelligent sensor networks
◾ Process automation
◾ Factory automation
Portable Devices
◾ Altimeters
◾ Blood pressure monitors
Automotive Sensors *
◾ Oil pressure
◾ Temperature sensing
◾ Strain gauges