Renesas Electronics ZSSC3241 Sensor Signal Conditioner ICs
Renesas Electronics ZSSC3241 Sensor Signal Conditioner ICs are optimized for highly accurate amplification, digitization, and sensor-specific correction of resistive sensor signals. The ZSSC3241 SSC offers best-in-class sensor-element adaptability and is designed for bridge/half-bridge sensors and external voltage-source element/single-element sensors powered by an on-chip current source.
The Renesas ZSSC3241 ICs utilize a 26-bit math core operating a correction algorithm with calibration coefficients stored in a non-volatile, reprogrammable memory. This algorithm allows for digital compensation of the sensor offset, sensitivity, temperature drift, and nonlinearity. A second, separate compensation for gain/offset and digital-output independent analog-output correction is supported for optimum adaptability of dual-domain (analog and digital) sensor solutions. The programmable, integrated sensor front-end enables optimally employing various sensors for various applications.
The ZSSC3241 supplies measurement value readouts and programming capabilities through an I2C, SPI, or one-wire interface (OWI). Three operation modes permit the optimal development of digital, digital-analog, and analog-output smart sensor modules. These include wake-up on request, continuous-on/fast-response, and automatic/cyclic sensor measurement operations. The ZSSC3241 supports absolute and ratiometric voltage, current-loop, or interrupt analog outputs. The analog output and digital interface options (for calibration and a digital application interface) can be combined.
Features
- Digital communication and calibration interfaces
- SPI up to 10MHz
- I2C (Standard, Fast, and High-Speed Mode)
- 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, e.g. sensor-bridge as temperature detector, external diode, etc.
- Support for Pt100
- Programmable 16-bit digital-to-analog-converter and output:
- (0V to 1V) or (0V to 5V) absolute voltage output
- VDD-ratiometric voltage output
- 4mA to 20mA current-loop output supported
- On-chip voltage regulators for sensor supply and IC operation
- Support for extra regulation by an external transistor, for example, JFET
- Programmable 24-bit sensor-signal-conditioning (main) mathcore
- Programmable 16-bit signal-conditioning (support) mathcore for dual-domain sensor-applications
- Reprogrammable, nonvolatile memory (NVM)
- Programmable measurement scheduler for continuous sensing applications, with an optimized balance of:
- Energy consumption
- Output update rate
- Self-diagnostic coverage and system safety
- Programmable analog-output clipping
- On-chip diagnostics:
- Sensor connection
- Broken-chip-check / chipping-check
- Memory integrity
Applications
- Calibrated, continuously operating sensors with digital interface and/or analog output: (absolute or ratiometric) voltage or current loop output
- Enables smart digital sensors for energy-efficient solutions
- Pressure, flow, and level sensing
- Industrial applications, e.g. process/factory automation
- Consumer / white goods, e.g., HVAC, weight scales
- Medical applications, e.g. blood pressure, continuous smart health monitors
Specifications
- Supply voltage, VDD of 2.7V to 5.5V; with external transistor, for example JFET of 5V to 48V
- -40°C to +125°C operating temperature range
- 0.5kΩ to 60kΩ supported sensor elements
- Available as die on wafers or 4mm2 24-QFN with wettable flanks, allowing visual inspection of QFN reflow quality
Associated Kit
Renesas Electronics ZSSC3241 Evaluation Kit
Engineered for sensor module evaluation, laboratory setup, and module calibration of the ZSSC3241.
Associated Products
Renesas Electronics ZSSC3224 Sensor Signal Conditioner IC
Integrated 26-bit calibration math Digital Signal Processor (DSP) and highly integrated CMOS design.
Renesas Electronics ZSSC3230 Capacitive Sensor Signal Conditioner ICs
Integrated circuit for accurate capacitance-to-digital conversion and sensor-specific correction.
Renesas Electronics ZSSC3240 Sensor Signal Conditioner IC
Enables highly accurate amplification and sensor-specific correction of resistive sensor signals.
Renesas Electronics ZSSC3281 Resistive Sensor Signal Conditioner IC
Optimized for amplification, digitization, and sensor-specific correction of sensor signals.
Renesas Electronics ZSSC4151 Automotive Sensor Signal Conditioner IC
IC for accurate amplification and sensor-specific correction of resistive bridge sensor signals.
Basic Application Diagram
Block Diagram
Typical Application Examples
