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

Industrial applications and factory automation
Consumer and white goods
Medical and health monitors

Resources

Datasheet
Calibration Guide
Sensor Signal Conditioning ICs Overview

Renesas Electronics ZSSC3281 Resistive Sensor Signal Conditioner IC

Features

Applications

Resources

Typical Application Circuit

Block Diagram

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