Automotive Sensor Signal Conditioner for Dual Voltage Source Sensor Inputs (e.g. Thermocouples) with SENT or I2C Output

The ZSSC4175 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 offers dual inputs for 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 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 overvoltage and reverse polarity protection circuitry, excellent electromagnetic compatibility, and multiple diagnostic features.


  • Dual 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 Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Range Carrier Type Buy Sample
ZSSC4175BE2R Active NLG24 VFQFPN 24 -40 to 150°C Reel Availability
ZSSC4175BE2W Active NLG24 VFQFPN 24 -40 to 150°C Reel Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
ZSSC416x-7x Family Short-form Datasheet Short Form Datasheet PDF 196 KB Apr 23, 2016
Application Notes & White Papers
ZSSC416x-7x Application Note - User Memory Application Note PDF 493 KB May 16, 2017
IDT Wafer Dicing Guidelines Application Note PDF 44 KB Apr 16, 2016
Tutorial on the Digital SENT Interface - ZSSC416x/ZSSC417x White Paper PDF 253 KB Apr 9, 2016
ZSSC41xx Technical Brief - Traceability Data Technical Brief PDF 178 KB Aug 27, 2018
IDT CAD Altium Libraries for AID Products Rev 20160819 PCB Design Files ZIP 1.20 MB Aug 18, 2016

Software & Tools

Title Other Languages Type Format File Size Date
ZSSC41xx Evaluation Software V3.1.1.0 Software ZIP 10.76 MB Aug 1, 2018

Evaluation Boards

Part Number Title Sort ascending
ZSSC417xKIT Evaluation Kit for ZSSC417x