Renesas Electronics ZSSC3240 Sensor Signal Conditioner IC

Renesas Electronics ZSSC3240 Sensor Signal Conditioner (SSC) IC enables highly accurate amplification, digitization, and sensor-specific correction of resistive sensor signals. This SSC IC accommodates nearly all resistive bridge-sensor types (from 1mV/V up to 500mV/V) and features digital communication/calibration interfaces such as SPI, I²C, and One-Wire-Interface (OWI). The ZSSC3240 IC comes with an integrated 26-bit calibration math Digital Signal Processor (DSP), an on-chip temperature sensor, and a programmable 16-bit Digital-to-Analog-Converter (DAC). This SSC device is optimized for high accuracy and offers excellent high-performance sensing solutions with a fully corrected signal at the digital output. Typical applications include pressure-, flow-, and level-sensing, factory automation, medical applications, and energy-efficient solutions.

Features

Digital communication and calibration interfaces:
- SPI up to 10MHz
- I²C (standard, fast, and high-speed modes)
- 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
On-chip temperature sensor
External temperature sensing supported:
- Sensor-bridge as a temperature detector
- External diode
Support for Pt100
Support for extra regulation by an external transistor, for example, JFET
On-chip voltage regulators for sensor supply and IC operation

Programmable 16-bit digital-to-analog-converter and 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
Programmable 24-bit sensor-signal-conditioning mathcore
Reprogrammable, Nonvolatile Memory (NVM)
Programmable measurement scheduler for continuous sensing applications, with an optimized balance of
- Energy consumption
- Output update rate
Sensor-signal-conditioning accuracy
Self-diagnostic coverage and system safety
On-chip diagnostics:
- Sensor connection
- Broken-chip-check/chipping-check
- Memory integrity

Applications

Calibrated, continuously operating sensors with digital interface and/or analog output:
- Voltage or current loop output (absolute or ratiometric)
Enables smart, digital sensors for energy-efficient solutions
Industrial applications:
- Process/factory automation

Pressure, flow, and level sensing
Consumer/white goods:
- HVAC and weight scales
Medical applications:
- Blood pressure, continuous smart health monitors