Advanced Differential ZSC31050 Sensor Signal Conditioner Datasheet Description Features ZSC31050 is a CMOS integrated circuit for highly accurate amp- Digital compensation of sensor offset, sensitivity, temperature lification and sensor-specific correction of bridge sensor and drift, and nonlinearity temperature sensor signals. The device provides digital com- Accommodates nearly all resistive bridge sensor types (signal pensation of sensor offset, sensitivity, temperature drift, and non- spans from 1mV/V up to 275mV/V) linearity via a 16-bit RISC microcontroller running a polynomial Digital one-pass calibration: quick and precise correction algorithm. Selectable compensation temperature source: bridge, The ZSC31050 accommodates virtually any bridge sensor type thermistor, or internal or external diode (e.g., piezo-resistive, ceramic thick-film, or steel membrane Output options: voltage (0 to 5V), current (4 to 20mA), PWM, based). In addition, it can interface to a separate temperature 2 I C, SPI, ZACwire (one-wire interface), alarm 2 sensor. The bi-directional digital interfaces (IC, SPI, and Adjustable output resolution (up to 15 bits) versus sampling ZACwire) can be used for a simple PC-controlled one-pass rate (up to 3.9kHz) calibration procedure to program a set of calibration coefficients into an on-chip EEPROM. A specific sensor and a ZSC31050 can Current consumption: 2.5mA (typical) be mated digitally: fast, precise, and without the cost overhead Selectable bridge excitation: ratiometric voltage, constant associated with trimming by external devices or laser. The voltage, or constant current ZACwire interface enables an end-of-line calibration of the Input channel for separate temperature sensor sensor module. Sensor connection and common mode check (sensor aging Typical applications for the ZSC31050 include industrial, medical, detection) and consumer products. It is specifically engineered for most AEC-Q100 qualification (temperature grade 0) resistive bridge sensors e.g., sensors for measuring pressure, force, torque, acceleration, angle, position, and revolution. Physical Characteristics Operation temperature -40C to +125C (-40C to +150C Benefits de-rated, depending on product version) No external trimming components required Supply voltage: 2.7V to 5.5V PC-controlled configuration and calibration via digital bus with external JFET: 5V to 48 V interface simple, low cost Available in 16-SSOP package or as die High accuracy (0.1% FSO 25 to 85C 0.25% FSO 40 to 125C) * Basic Circuit Diagram Available Support VCC Evaluation kit available Support for industrial mass calibration available Sensor Module Quick circuit customization possible for large production OUT volumes ZSC31050 GND * Digital output signal. 2020 Renesas Electronics Corporation 1 March 18, 2020 ZSC31050 Datasheet Block Diagram Ext. Temp. Sens. IR TEMP SCL CTRL-REGS SIF SDA VBR + PCOMP ADC Mode Gain Temp. Sens. Offset Factor Select Shift RAM VINP OUT / PGA MUX ADC CMC DAC FIO1 OWI VINN Analog Front-End (AFE) IO1 EEPROM PWM FIO2 IO2 Int. Temp. Sensor Digital Section Interfaces External Sensor Bridge Temperature IN3 Sensor Analog Digital Interface Typical Applications: Consumer Goods Industrial Applications Portable Devices Automotive Sensors * Weight scales 4-20mA transmitters Altimeters Oil pressure Flow meters Intelligent sensor networks Blood pressure Temperature sensing monitors Strain gauges Process automation Strain gauges Load meters Factory automation * AEC-Q100 qualified HVAC 2020 Renesas Electronics Corporation 2 March 18, 2020