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 based). Output options: voltage (0 to 5V), current (4 to 20mA), PWM, In addition, it can interface to a separate temperature sensor. The 2 I C, SPI, ZACwire (one-wire interface), alarm 2 bi-directional digital interfaces (I C, SPI, and ZACwire) can be Adjustable output resolution (up to 15 bits) versus sampling used for a simple PC-controlled one-pass calibration procedure to rate (up to 3.9kHz) program a set of calibration coefficients into an on-chip EEPROM. A specific sensor and a ZSC31050 can be mated digitally: fast, Current consumption: 2.5mA (typical) precise, and without the cost overhead associated with trimming by Selectable bridge excitation: ratiometric voltage, constant external devices or laser. The ZACwire interface enables an end- voltage, or constant current of-line calibration of the sensor module. Input channel for separate temperature sensor Typical applications for the ZSC31050 include industrial, medical, Sensor connection and common mode check (sensor aging and consumer products. It is specifically engineered for most detection) resistive bridge sensors e.g., sensors for measuring pressure, AEC-Q100 qualification (temperature grade 0) force, torque, acceleration, angle, position, and revolution. Physical Characteristics Benefits Operation temperature -40C to +125C (-40C to +150C No external trimming components required de-rated, depending on product version) PC-controlled configuration and calibration via digital bus Supply voltage: 2.7V to 5.5V interface simple, low cost with external JFET: 5V to 48 V High accuracy (0.1% FSO 25 to 85C Available in 16-SSOP package or as die 0.25% FSO 40 to 125C) * Basic Circuit Diagram Available Support Evaluation kit available VCC Support for industrial mass calibration available Sensor Quick circuit customization possible for large production Module volumes OUT ZSC31050 GND * Digital output signal. 2022 Renesas Electronics Corporation 1 January 14, 2022 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) EEPROM IO1 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 2022 Renesas Electronics Corporation 2 January 14, 2022