Overview

Description

The ZSSC3230  is a CMOS integrated circuit for accurate capacitance-to-digital conversion and sensor-specific correction of capacitive sensor signals. Digital compensation of sensor offset, sensitivity, and temperature drift is accomplished via an internal digital signal processor running a correction algorithm with calibration coefficients stored in a non-volatile, multiple-time programmable (MTP) memory. Programming the ZSSC3230 is simple via the serial interface. The interface is used for the PC-controlled calibration procedure, which programs the set of calibration coefficients in memory. The ZSSC3230 is configurable for capacitive sensors with capacitances up to 30pF and will provide a scalable up to 18 bit output resolution. It is compatible with single ended capacitive sensors. Measured and corrected sensor values can be output as I2C™ (≤ 3.4MHz).

The ZSSC3230 provides accelerated signal processing, increased resolution, and improved noise immunity in order to support high-speed control, safety, and real-time sensing applications with highest requirements for energy efficiency.

Features

  • Supply Voltage 1.68–3.6V 
  • Low current consumption with 1.3µA at 1 sample per second
  • Maximum target input capacitance: 30pF
  • Programmable capacitance span and offset
  • High sampling rate with 430Hz at 14-bit resolution
  • ADC resolution: adjustable in speed and resolution, 18-bit in maximum
  • Internal auto-compensated temperature sensor, not stress sensitive
  • Programmable measurement sequence, single shot and automatic cycling of measurements with end-of-sequence interrupt output
  • Oversampling modes by internal averaging
  • Interrupt features
  • Build in NVM for configuration and free space for arbitrary user data
  • Small die size
  • External reset pin (low active)
  • No external trimming components required
  • Highly integrated CMOS design
  • Package: Die and 24-VFQFPN

Applications

Documentation

Title Type Date
PDF1.34 MB
Datasheet
7Z1.21 MB
Guide
PDF1.02 MB
Guide
PDF3.83 MB
Manual - Hardware
PDF2.94 MB
Overview
PDF647 KB
Technical Brief

Design & Development

Software & Tools

Software Downloads

Title Type Date
ZIP3.82 MB
Software & Tools - Evaluation Software

Boards & Kits

Boards & Kits

Models

Support

Videos & Training

ZSSC3230 Sensor Signal Conditioners for Capacitive Sensing Applications

This video introduces the ZSSC3230, the newest energy efficient and highly precise 18-bit sensor signal conditioners (SSCs) from Renesas. Its combination of best-in-class signal conditioning, low power consumption and small size makes it ideal for use with humidity, pressure, level and other smart capacitive sensor modules that are included in a variety of consumer, medical and industrial applications, such as HVAC systems, weather stations, smart meters and automated smart building systems.