Datasheet IDT ZSSC4175

Automotive Sensor Signal
Conditioner for Thermocouples
with SENT Output
Description Features The ZSSC4175D-01 is a member of IDT’s family of CMOS
integrated circuits for highly accurate amplification and sensorspecific 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
ZSSC4175D-01 nonvolatile memory (NVM), which is reliable in
automotive applications. 
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 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 one output pin. End-of-line
calibration is also supported through this output pin via a One-Wire
Interface (OWI). The ZSSC4175D-01 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.  
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