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onsemi NCV7192 Bridge Signal Conditioning Interface

onsemi NCV7192 Bridge Signal Conditioning Interface is designed for automotive safety applications, offering both analog and SENT (Single Edge Nibble Transmission) output options. The onsemi NCV7192 conditions differential signals from external sensing elements (such as piezo‑resistive or strain‑gauge bridge sensors) by applying configurable gain and offset adjustment through a low‑noise amplification stage. The device incorporates an integrated DSP to compensate for sensor nonlinearity and temperature effects, ensuring accurate and stable output across a wide range of operating conditions.

NCV7192 also features a dedicated measurement channel for linearizing and monitoring an external NTC thermistor, enabling medium‑temperature reporting via the SENT interface. With an integrated, output‑pin‑programmable EEPROM, the NCV7192 allows storage of calibration data, compensation coefficients, and user‑defined payload information. Built‑in diagnostic mechanisms (including connectivity checks, BIST [Built‑In Self‑Test] routines for sensor, temperature, DSP, and output paths, as well as protections against shorts, overvoltage, and reverse voltage) enhance reliability in safety‑critical environments. Typical applications include pressure sensing and force/torque measurement in systems requiring precise, robust signal conditioning.

Features

  • 1kΩ to 25kΩ resistive bridge impedance range
  • 2mVpk/Vbdr to 125mVpk/Vbdr differential input range (SIN_FSS + SIN_PO)
  • Integrated DSP to compensate bridge and temperature non-linearity using polynomials
  • 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 SAE J2716 (April 2016) Standard
  • Analog output buffer driven by a 14-bit DAC with programmable clip levels
  • Safety mechanisms
    • Sensor connectivity error detection
    • Bridge signal measurement BIST
    • Temperature measurement BIST
    • DSP BIST
    • Analog output connectivity error detection
    • SENT connectivity error detection
  • SOIC-8 package
  • NCV prefix for automotive and other applications requiring unique site and control change requirements, AEC-Q100 qualified and PPAP capable

Applications

  • Pressure sensors with piezo-resistive bridges
  • Force/torque sensors with resistive strain-gauges

Specifications

  • 4.5V to 5.5V operating VCC range
  • 1kΩ to 25kΩ bridge impedance range
  • ±2 ratio of zero signal offset (SIN_PO) and sensor full scale span (SIN_FSS)
  • ±125mV/Vbdr maximum differential input range
  • NTC impedance ranges
    • 57Ω to 20,900Ω for pull-up resistor 1
    • 570Ω to 209,000Ω for pull-up resistor 2
  • 7mA maximum VCC current consumption
  • Supply voltage monitor
    • 4.4V maximum VCC reset release threshold, supply rising
    • 3.6V maximum VCC reset enable threshold, supply falling
    • 5V to 6V VCC overvoltage programmable threshold range
    • 4V to 5V VCC undervoltage programmable threshold range
  • Bridge signal
    • 3V typical bridge drive voltage V(SN) - V(SS) for a typical 3kΩ bridge
    • ±200mV bridge signal differential input voltage range corresponding to the maximum ADC input with analog signal gain 1
    • 1/2V/V to 30V/V programmable range of typical analog signal gain
    • Maximum programmable full signal path gain
      • 600V/V typical towards the analog output channel, digital coefficient gain 1
      • 613kLSB/V typical towards the SENT bridge signal channel, digital coefficient gain 1
  • Temperature measurement
    • Junction temperature measurement (tint) residual error
      • ±3.5K from -40°C to +135°C
      • ±5K from -40°C to +150°C
    • ±3K bridge temperature measurement residual error after trim and calibration
    • 1.2kΩ to 9.5kΩ allowed bridge resistance range for temperature measurement
  • SENT output driver
    • 0.5V maximum low state voltage
    • 4.1V minimum high state voltage
    • 6.5µs maximum fall time
    • 18µs maximum rise time
    • 0.1µs typical edge-to-edge jitter
    • 1.1ms maximum first falling edge of the first SENT frame after power-up
    • ±20% clock variation versus nominal tick time
  • Analog output driver
    • 0.2V to 4.8V range
    • 0.15V maximum failure band low
    • 4.85V minimum failure band high
    • ±0.5% output ratio-metricity error
    • ±0.5µA OUTX leakage in high-impedance state at +125°C
    • 1.2ms maximum time from power-up till start of the analog output driver
    • 0.5ms maximum analog output step response time (digital filter disabled, input step to 90% of output)
  • 4.85V to 5.15V operating VCC range for SENT parameter performance
  • -40°C to +165°C junction temperature range under bias

Resources

Application Circuit Diagrams

Application Circuit Diagram - onsemi NCV7192 Bridge Signal Conditioning Interface
Publicado: 2026-02-26 | Actualizado: 2026-03-02