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
- 0V to 10V absolute-voltage output supported
- On-chip voltage regulators for sensor supply, and IC operation
- Support for VDD regulation by external JFET
- 24-bit analog-to-digital converter and 26 bits digital-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
Description
The ZSSC3240 is a sensor signal conditioning IC (SSC) for highly accurate amplification, digitization, and sensor-specific correction of resistive sensor signals. The ZSSC3240 is suitable for bridge and half-bridge sensors, as well as external voltage-source element and single-element sensors (e.g., Pt100 and external temperature sensor diodes) powered by an on-chip current source. Digital compensation of the sensor offset, sensitivity, temperature drift, and non-linearity is accomplished via a 26-bit math core running a correction algorithm with calibration coefficients stored in a non-volatile, reprogrammable memory. The programmable, integrated sensor front-end allows optimally applying various sensors for a broad range of applications. The ZSSC3240 provides measurement value readouts and programming capabilities via an I²C, SPI, or one-wire interface (OWI). Three different operation modes allow optimal development of digital, digital-analog, and analog-output smart sensor modules including wake-up on request, continuous-on/fast‑response, and automatic/cyclic sensor measurement operations. Absolute and ratiometric voltage, current-loop, or interrupt analog outputs are supported by the ZSSC3240. The analog output options and digital interface options (for calibration and/or a digital application interface) can be combined.
Parameters
| Attributes | Value |
|---|---|
| Function | Resistive SSC |
| Automotive Qual. | No |
| Supply Voltage (V) | 2.7 - 5.5 |
| Input Type | Single-bridge |
| Interface | I2C, SPI, Alarm, Ratiometric Voltage, Absolute Voltage, Current Loop, OWI |
| Adj. Analog Gain | 1.32 - 540 |
| Resolution (bits) | 24 |
| Sample Rate Max (KHz) | 2.91 |
| Temp. Range (°C) | -40 to +85°C, -40 to +125°C, -40 to 85°C, -40 to 125°C |
Application Block Diagrams
 | Smart All-in-One Pressure Cooking Pot Smart pressure cooker offers step-by-step guidance, Wi-Fi updates, precise cooking, and energy efficiency. |
 | Wireless Bathroom Weighing Scale Wireless bathroom scale offers precise tracking, Bluetooth connectivity, compact design, and energy efficiency. |
 | IO-Link Sensors This system enables smart sensor control via IO-Link communication. |
 | Resistive Sensor Platform with IO‑Link Low‑power, high‑performance sensing with IO‑Link connectivity and SSC pre‑processing for easy integration. |
 | LoRaWAN Gas Meter LoRaWAN network enables automatic, efficient gas meter shutdown with low power and long-range benefits. |
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Renesas Boards & Kits
Sensor Signal Conditioner IC Evaluation Kit
The ZSSC3240KIT Evaluation Kit provides the hardware needed for the configuration, calibration, and evaluation of the ZSSC3240 Sensor Signal Conditioner (SSC) IC. The user's PC can communicate with the ZSSC3240 IC socketed on the ZSSC3240 SSC Evaluation Board via the SSC Communication Board... Read More
RA2E1 IO-Link Pressure Sensor Solution Demonstration Kit
This solution is a combination of the ultra-small and low-power consumption 32-bit RA2E1 MCU and the ZSSC3240 sensor signal conditioner (SCC) kit. It realizes pressure measurement and signal processing through IO-Link communication.
One-Wire Current Loop Add-on Board for ZSSC32xx
The ZSSC32XX-CLOWI-PCB is an extension for products of ZSSC32xx series featuring 4–20 mA current loop output. The board is and add-on PCB to the product related Evaluation Kit. It provides the hardware needed for current loop operation in combination with one wire communication via a 2-wire... Read More
Interposer Board for Calibrating a ZSSC Pmod Resistive Type Sensor
The US082-SSCALINTRPEVZ interposer board provides flexibility in connecting the resistance type ZSSC Pmod™ sensor to the SSC communication board for performing calibration. The use of an interposer board minimizes the risk of accidental wire disconnection and wiring errors. Additionally, using... Read More
