ZSSC4169D-14 Automotive Resistive Sensor Signal Conditioner with SENT Output

2021-04-20
The ZSSC4169D-14 is member of Renesas’family of CMOS integrated circuits for highly accurate amplification and sensor-specific correction of differential bridge sensor element signals. Featuring a maximum analog pre-amplification in the range of up to 200, the ZSSC4169D-14 is adjustable to nearly all resistive bridges.
Digital compensation of offset, gain, sensitivity, temperature drift, and nonlinearity is accomplished via a 16-bit RISC microcontroller. Calibration coefficients and configuration data are stored in the ZSSC4169D-14 nonvolatile memory (NVM), which is reliable in automotive applications.
The ZSSC4169D-14 supports using the internal PTAT or external diodes as temperature references.
Measured values are provided via a digital SENT interface. The SENT interface enables transmission of sensor 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 ZSSC4169D-14 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 ZSSC4169D-14 is optimized for automotive environments by overvoltage and reverse polarity protection circuitry, excellent electromagnetic compatibility, and multiple diagnostic features.
●Features:
■Differential bridge sensor input and on-chip or external temperature sensors, selectable for conditioning of the sensor input signal and/or temperature output
■Digital compensation for offset, gain, and higher order nonlinearity as well as temperature coefficients of measured bridge sensor input signal
■Operating temperature range: -40°C to 150°C
■Accuracy: ±0.5% FS at -40°C to 150°C
■NVM memory for configuration, calibration data, and configurable measurement and conditioning functionality
■SENT output based on SAE J2716 Revision 3.0 standard using Fast and Serial Data Message Channels
■Supports output of one or more sensor signals and product identification via a single SENT interface connection
■Configurable for nearly all resistive bridge sensors
■One-pass, end-of-line calibration algorithm minimizes production costs
■No external trimming or components required
■Qualified according to AEC-Q100 Grade 0
■Support for the user’s ASIL C safety applications

Renesas

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Automotive Resistive Sensor Signal Conditioner

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24-QFN;16-TSSOP

English Chinese Chinese and English Japanese

Jul.21.20

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