Renesas Electronics ZSSC3281 Resistive Sensor Signal Conditioner IC

Renesas Electronics ZSSC3281 Resistive Sensor Signal Conditioner (SSC) IC is optimized for highly accurate amplification, digitization, and sensor-specific correction of sensor signals. The ZSSC3281 is suitable for bridge and half-bridge sensors, as well as external voltage-source element and single-element sensors powered by an on-chip current source. Digital compensation of the sensor offset, sensitivity, temperature drift, and non-linearity is accomplished via a 32-bit Arm^® M3-based math core running a correction algorithm. Calibration coefficients are stored in non-volatile, reprogrammable memory. The programmable, integrated sensor front-end allows the optimal application of sensors for a broad range of applications.

The ZSSC3281 provides measurement value readouts and programming capabilities via an I²C, SPI, or one-wire interface (OWI). The SSC also supports absolute and ratiometric voltage, current-loop, or interrupt outputs.

The Renesas Electronics ZSSC3281 Resistive Sensor Signal Conditioning IC is offered in a 5.0mm x 5.0mm QFN-40 package. The device is also available as a bare die on a 304µm or 725µm wafer, with or without inking.

Features

Digital communication and calibration interfaces:
- SPI up to 10MHz
- I²C (Standard, Fast, Fast+) and I³C SDR
- One-wire-interface (OWI), up to 100kBit/s
Accommodates nearly all resistive bridge sensor types (signal spans from 1mV/V up to 500mV/V)
Supports different sensor element configurations:
- Resistive bridge or half-bridge
- Resistive divider string
- Voltage source
Programmable 16-bit digital-to-analog-converter and output, supporting "True-0V"-output
- (0V to 1V) or (0V to 5V) absolute voltage output
- V_DD-ratiometric voltage output
- 4mA to 20mA current-loop output supported
- 0V to 10V absolute-voltage output supported

On-chip temperature sensor
External temperature sensing supported
Wide operational temperature and supply range
On-chip voltage regulators for sensor supply and IC operation
Support for extra regulation by an external transistor
Programmable sensor-signal-conditioning math core
Reprogrammable, non-volatile memory (NVM)
On-chip diagnostics
- Sensor connection
- AFE self-test
- Memory integrity
Package options
- 5.0mm x 5.0mm QFN-40 package
- Bare die on a 304µm wafer
- Bare die on a 725µm wafer

Applications

Calibrated, continuously operating sensors with digital interface and/or analog output
Smart, digital sensors for energy-efficient solutions
Pressure, flow, and level sensing