Analog output dual-channel resistive sensor signal regulator IC

Renesas' ZSSC3281 is a dual-path SSC IC for high-precision amplification, digitizing, and sensor-specific correction of sensor signals. It is suitable for bridge and half-bridge sensors powered by on-chip current sources, as well as external voltage source components and element sensors (e.g. Pt100 and external temperature sensor diodes).

Digital compensation for sensor offset, sensitivity, temperature drift, and nonlinearity is accomplished using a 32-bit Arm M3 mathematical kernel run correction algorithm, and the calibration coefficients are stored in non-volatile reprogrammable memory. The programmable integrated sensor front end enables the optimal application of various sensors in a wide range of applications.

Features

● Dual channel resistive sensor signal regulator
● Digital communication and calibration interface SPI, I²C, OWI
● Various sensor component configurations are supported
● On-chip temperature sensor
● Supports external temperature detection: three channels
● Programmable 16 bit digital to analog converter and output
● Absolute voltage output: 0 V to 10 V
● VDD proportional voltage output
● Current loop output: 4 mA to 20 mA
● Programmable measurement scheduler
● On-chip diagnosis

Applications

● Intelligent sensing application
● Digital sensors for energy saving solutions
● Flow and liquid level detection
● Factory automation
● Consumer/white goods
● Medical monitoring application

Advantage

● Suitable for almost all resistance bridge sensor types (signal range from 1 mV/V to 500 mV/V)
● Integrated Arm-M3 processor, integrated mathematical operations for digital signal processing
● The embedded algorithm of the virtual 3rd channel
● Fully corrected signal for digital or analog output stage
● One-time calibration can minimize the cost of calibration
● Integrated programmable nonvolatile memory
● Ideal for high performance sensing solutions
● Optimized for high precision