Analog Devices Inc. ADA4558 Bridge Sensor Signal Conditioner IC

Analog Devices ADA4558 Bridge Sensor Signal Conditioner IC provides digital nonlinearity correction and temperature compensation via internal or external sensed temperatures. This is done using on-chip correction and calibration hardware that can be optimized for a specific bridge sensor. The ADA4558 utilizes a fourth-order digital correction algorithm and delivers a system accuracy of 0.1% full scale range (FSR) for bridge sensors with second-order nonlinearity sensitivity. The ADA4558 includes a local interconnect network (LIN) physical interface for single-wire, high-voltage communications in automotive environments. LIN 2.1 and earlier versions are supported. The LIN interface allows access to measurements, end of line (EOL) calibration, and a wide range of diagnostic functions.

The analog subsystem consists of an analog-to-digital converter (ADC) and a programmable gain amplifier (PGA) with a wide gain range from 2.94V/V to 971.10V/V. To minimize power supply noise, the bridge sensor is biased with an internal 4V voltage regulator. The ADA4558 is fully specified from −40°C to +150°C. The device operates from battery supply voltages of 6V to 18V. The ADA4558 is available in a 4mm×4mm, 20-lead lead frame chip scale package (LFCSP).


  • LIN 2.1 compliant interface (bridge sensor signal, temperature)
  • Digitally programmable gain and offset voltage adjustment
  • Gain range from 2.94V/V to 971.10V/V
  • Sensor temperature compensation (first- or second-order)
  • Sensor nonlinearity correction (first- or second-order)
  • Internal or external temperature sensor compensation
  • EEPROM nonvolatile memory for calibration data
  • High system accuracy: 0.1% FSR over temperature
  • EMC and EMI protection
  • Fault protection for open circuits and short circuits
  • 4mm×4mm, 20-lead LFCSP
  • 6V to 18V supply operation
  • −40°C to +150°C operating temperature range
  • AEC-Q100 qualified for automotive applications


  • Strain gage
    • Pressure signal conditioner for automotive vehicles

Functional Block Diagram

Block Diagram - Analog Devices Inc. ADA4558 Bridge Sensor Signal Conditioner IC
Published: 2019-07-30 | Updated: 2022-03-10