Sensor _ SSP: Sensor Signal Processor for Resistive Bridges

The Elmos SSPs are suitable for numerous automotive applications. Pressure, torque and related physical parameters can be measured with resistive MEMS, ceramic or metal film measuring bridges. The ICs feature a broad adjustment range, straightforward calibration via a serial input/output (SIO) for the entire system and extensive configuration options. They also have comprehensive, integrated self-test functions and are highly robust against overvoltage, especially for automotive applications.
Part-No./Function Interface FlexRayTM Standard Recommended IMAX Efficiency Output Range Transducer frequency Driver output Memory Detection Sensitivity Bandwidth VBAT VOUT VSUPPLY Protection ISUPPLY IPEAK IMAX DC P(Motor) peak P(Motor)max VDD VER Iq RDSON ESD (kV) Bitrate Cranking Support High-Side Driven Low-Side Driven Bi-Stabil Included µC Feed-Back Inputs Package Status Comment
E520.18
Advanced Versatile Sensor Signal Processor

Analog voltage, PWM, SPI, I²C

Sensor Sensitivity
1mV/V to 130mV/V

3.3V to 16V, up to 36V with external transistor

QFN32L5
Bare-Die

  • In-Circuit system calibration via OWI, SPI or I²C
  • Built-in self test capability and self diagnostics during operation
  • Direct supply from car battery
E520.33
Advanced Versatile Sensor Signal Processor

Digital: SENT data interface

Sensor Sensitivity
1mV/V to 130 mV/V

5V ±0.25V

TSSOP20
Bare-Die

  • Automotive protection (±18V)
  • Single wire interface for calibration
  • Extended self diagnostics
  • SENT interface acc. SAE J2716, Jan2010
E520.44
Sensor Signal Processor with Analog or Sent Output

Analog voltage
Digital: SENT interface

Sensor Sensitivity
1mV/V to 50mV/V

5 to ±0.5V

QFN20L4
Bare-Die

  • Automotive protection +40 / -28V
  • Very low noise front-end
  • Trimmable input low-pass filter
  • Comprehensive self diagnostics
  • SENT interface (SAE J2716, Jan 2010)