The ZSSC4175 is a member of IDT’s family of CMOS integrated circuits for highly accurate amplification and sensor-specific correction of two signals from thermocouple elements. Digital compensation of offset, sensitivity, temperature drift, and nonlinearity is accomplished via a 16-bit RISC microcontroller. Calibration coefficients and configuration data are stored in the ZSSC4175 non-volatile memory (NVM), which is reliable in automotive applications.

Measured values are provided via a digital SENT interface. The SENT interface enables transmission of conditioned thermocouple data via its Fast Channel as well as transmission of supplementary data via its Serial Data Message (SDM) Channel (also referred to as the “slow” channel) using only oneoutput pin. End-of-line calibration is also supported through this output pin via a One-Wire Interface (OWI). The ZSSC4175 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 ZSSC4175 is optimized for automotive environments by over-voltage and reverse-polarity protection circuitry, excellent electromagnetic compatibility, and multiple diagnostic features.


  • Two differential thermocouple element inputs and an on-chip temperature sensor, available for cold-junction compensation and temperature output
  • Operating temperature range: -40°C to 150°C
  • Accuracy: up to 5K at 1000°C hot junction
  • Supports N-type thermocouples
  • NVM memory for configuration, calibration data, and configurable measurement and conditioning functionality
  • SENT output compliant to SAE J2716 JAN2010 (SENT Rev.3) and APR2016 (SENT Rev.4) standard
  • Supports output of one or more thermocouple signals and product identification via a single SENT interface connection
  • End-of-line calibration process minimizes production costs
  • No external trimming or components required
  • Qualified according to AEC-Q100 Grade 0
  • Enhanced diagnostic features for sensor module

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Range Carrier Type Buy Sample
ZSSC4175DE4R Active NLG24 VFQFPN 24 -40 to 150°C Reel
ZSSC4175DE4W Active NLG24 VFQFPN 24 -40 to 150°C Reel

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
ZSSC4175D-01 Datasheet Datasheet PDF 622 KB
User Guides & Manuals
ZSSC4175D Configuration Report Guide HTML 2.82 MB
ZSSC41xx Technical Brief - Traceability Data Guide PDF 178 KB
IDT CAD Altium Libraries for AID Products Rev 20160819 Guide ZIP 1.20 MB
Application Notes & White Papers
ZSSC4175D Application Note - Calibration Application Note PDF 798 KB
ZSSC416x-7x Application Note - User Memory Application Note PDF 493 KB
Tutorial on the Digital SENT Interface - ZSSC416x/ZSSC417x White Paper PDF 253 KB

Software & Tools

Title Other Languages Type Format File Size Date
ZSSC416x-7x Software User Guide Manual - Software PDF 2.39 MB
ZSSC41xx Evaluation Software V3.2.2.2 Software ZIP 10.92 MB

Evaluation Boards

Part Number Title Sort ascending
ZSSC4175EVK Evaluation Kit for ZSSC4175