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ZSSC4171 - Application Circuit
ZSSC4171 - Block Diagram

ZSSC4171

Automotive Sensor Signal Conditioner for a Voltage Source Sensor (e.g. Thermocouple) with SENT or I2C Output

The ZSSC4171 is a member of IDT's ZSSC417x family of CMOS integrated circuits for highly accurate amplification and sensor-specific correction of voltage source sensor signals; e.g., thermocouple signals. The ZSSC4171 is designed for single thermocouple signals. Digital compensation of offset, sensitivity, temperature drift, and nonlinearity is accomplished with a 16-bit RISC microcontroller. Calibration coefficients and configuration data are stored in an integrated non-volatile memory (NVM), which is reliable in automotive applications. Measured values can be read via a digital SENT or I2C interface. The SENT interface enables transmission of sensor data via its fast channel as well as supplementary data via its Serial Data Message ("slow") channel using only one output pin. End-of-line calibration is supported via an I2C interface or via a One-Wire Interface (OWI) through the data output pin (DOUT). The ZSSC4171 and the calibration equipment communicate digitally, so the noise sensitivity is greatly reduced. Digital calibration helps keep assembly cost low as no trimming by external devices or lasers is needed. The ZSSC4171 is optimized for automotive environments by overvoltage and reverse polarity protection circuitry, excellent electromagnetic compatibility, and multiple diagnostic features.

Features

  • Single thermocouple interface
  • Supports N-type thermocouples; additional thermocouple types on request
  • Diagnostics for thermocouples
  • Internal temperature sensor for cold-junction temperature compensation
  • Digital compensation of offset, gain, and higher order nonlinearity as well as temperature coefficients of measured sensor input signals
  • Operating temperature range: -40°C to 150°C
  • Accuracy: ±0.25% FSO @ -40°C to 125°C
  • NVM memory for configuration data, user-configurable measurement and conditioning function, and user-selected data

Product Specification

FunctionTemp. RangeSupply Voltage (V)Input TypeInterfaceResolution (bits)
Resistive SSCT04.75 - 5.25Dual-thermocouple, Dual-bridgeI2C, SENT 3.018

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. RangeCarrier TypeSample & Buy
ZSSC4171BE2RActiveNLG24VFQFPN24T0ReelCheck Availability
ZSSC4171BE2WPreviewNLG24VFQFPN24T0ReelCheck Availability

Documents

Technical Documentation

Title Other Languages Type Format File Size Datesort icon
Datasheets & Errata
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ZSSC416x-7x Family Short-form Datasheet Short Form Datasheet PDF 196 KB Apr 24, 2016
Apps Notes & White Papers
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IDT Wafer Dicing Guidelines Application Note PDF 44 KB Apr 17, 2016
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Tutorial on the Digital SENT Interface - ZSSC416x/ZSSC417x White Paper PDF 253 KB Apr 10, 2016
Other
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IDT CAD Altium Libraries for AID Products Rev 20160819 PCB Design Files ZIP 1.20 MB Aug 19, 2016
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Automotive Solutions Overview 简体中文 Overview PDF 2.79 MB Mar 9, 2016

Related Videos

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Evaluation Boards