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  3. onsemi — NCV7192 Signal Conditioning Interface with Analog or SENT Output

onsemi — NCV7192 Signal Conditioning Interface with Analog or SENT Output

 

onsemi

 

onsemi NCV7192 Signal Conditioning Interface with Analog or SENT Output

High-performance signal conditioning interface delivering precise, reliable outputs for industrial and automotive safety applications

The onsemi NCV7192 is a versatile Signal Conditioning Interface designed for industrial and automotive safety systems, offering either Analog or SENT output. It processes differential signals from an external sensing element, adjusting gain and offset through a configurable amplification stage while compensating for both nonlinearity and temperature effects. The conditioned output is then provided as either a ratio-metric analog signal or a digital SENT output.

A dedicated measurement channel linearizes and monitors the resistance of an external NTC to determine medium temperature, which can be transmitted through the SENT interface. The device also features an integrated EEPROM, programmable through the output pin, allowing storage of configuration data, compensation parameters, and customizable user payload information. Built-in diagnostics and internal protection features such as short-circuit, overvoltage, and reverse-voltage safeguards enhance reliability and make the NCV7192 well suited for industrial and safety-critical automotive applications.

Features

  • Resistive Bridge Impedance: from 1kΩ to 25 kΩ
  • Integrated DSP to Compensate Bridge and Temperature Non-Linearity Using Polynomes
  • Differential Input Range from 2 mVpk/Vbdr to 125 mVpk/Vbdr
  • Calibration Interface over OUTX Pin
  • Low-noise Amplification Stage with Programmable Gain/Offset
  • Temperature Measurement with Bridge Impedance or Internal Junction Diode
  • Medium Temperature Measurement with External NTC
  • SENT Output According to the Standard SAE J2716 (April 2016)
  • Analog Output Buffer Driven by a 14-bit DAC with Programmable Clip Levels
  • AEC-Q100 Qualified and PPAP Capable

Applications

  • Pressure Sensors with Piezo-resistive Bridge
  • Force/Torque Sensor
  • Industrial Pressure Metering
  • Overload detection for Robots/Cobots
  • Weight Metering

End Products

  • Pressure Sensors

onsemi — NCV7192 Signal Conditioning Interface

Application Diagram

onsemi — NCV7192 Application Diagram for SENT Application
onsemi — NCV7192 Application Diagram for Analog Output Application

Evaluation Kit

NCV7192EVK

The Evaluation Kit can be used for an initial evaluation to get familiar with the NCV7192 Bridge Signal Conditioning Interface. It is operated through a Windows-based GUI (Graphical User Interface) and is connected via a USB cable to the microcontroller on the evaluation kit. The microcontroller handles the translation from USB to the NCV7192 device.

In Operating mode, it is possible to set the chip to ANALOG or SENT output. If the output is set to ANALOG, the output voltage of the chip is measured by an on-board ADC and sent to the GUI. If the output is set to SENT, it is possible to read the signals from the output pin through this protocol.

Part of the evaluation kit is a Wheatstone bridge emulator. It is a resistive bridge used for emulating a range of transducers.


NCV7192 Application Notes