ZMD ZSSC3131, ZSSC3135, ZSSC3136 and ZSSC3138 Signal Conditioner ICs

ZMD announced the ZSSC3131, ZSSC3135, ZSSC3136 and ZSSC3138 smart sensor signal conditioner ICs. The devices are designed for the signal conditioning of resistive bridge sensing elements, like silicon or ceramic-based piezo-resistive transducers or thin-/thick-film or gauge-type sensor elements. The ZSSC3131 is priced at $4.28 (€ 2.95) in volumes of 1,000 devices. The ZSSC3135 is priced at $4.39 (€ 3.03), the ZSSC3136 is $ 4.62 (€ 3.19), and the ZSSC3138 is $4.71 (€ 3.25). The new ZMDI chips are ideal for automotive and industrial pressure sensing applications such as HVAC, cooling, pneumatic brakes and other hydraulic systems.

The smart sensor signal conditioner ICs are available in a SSOP-14 package, which enables system designers to develop several designs in parallel. An automatic end-of-line procedure, communicating via digital one-wire-interface (I2C / ZACwire), compensates sensor offset, sensitivity, temperature drift and non-linearity within a single calibration pass sequence.

All devices have an analog ratiometric voltage output and they operate with supply voltages between 4.5V to 5.5V. They are available for temperature ranges from -40°C to +125°C and -40°C to +150°C.

Input signal measurement accuracies are within +/- 0.25% full-scale operational range at -25 to +85°C and +/- 0.50% full-scale operational range at -40 to +125°C. All devices have integrated high-voltage protection up to 33V, robust ESD and EMI stability, reverse polarity and short circuit protection and meet automotive AEC-Q100 standard.

ZSSC3131 Features

  • Adjustable to nearly all resistive bridge sensor types, analog gain of 105, overall gain up to 420
  • Sample rate up to 200 Hz
  • ADC Resolution 13/14 Bit
  • Internal temperature compensation
  • Integrated adjustable digital filter
  • Digital compensation of sensor offset, sensitivity, temperature drift, and non-linearity
  • Output options: Ratiometric analog voltage output (5 – 95% in maximum, 12.4 bit resolution) or ZACwire (digital one-wire-interface)
  • Sensor biasing by voltage
  • High voltage protection up to 33 V
  • Supply current: Max. 5.5mA
  • Reverse polarity and short circuit protection
  • Wide operation temperature range up to -40 and +150°C
  • Traceability by user-defined EEPROM entries

ZSSC3135 Features

  • Adjustable to nearly all resistive bridge sensor types, analog gain of 105, overall gain up to 420
  • Sample rate up to 200 Hz
  • ADC Resolution 13/14 Bit
  • Safety functionality sensor connection
  • External temperature sensor
  • Digital compensation of sensor offset, sensitivity, temperature drift, and non-linearity
  • Output options: Ratiometric analog voltage output (5 – 95% in maximum, 12.4 bit resolution) or ZACwire (digital one-wire-interface)
  • Sensor biasing by voltage
  • High voltage protection up to 33 V
  • Supply current: Max. 5.5mA
  • Reverse polarity and short circuit protection
  • Wide operation temperature range between -40 and +150°C
  • Traceability by user-defined EEPROM entries

ZSSC3136 Features

  • Analog gain of 105, overall gain up to 420
  • Sample rate up to 200 Hz
  • ADC Resolution 13/14 Bit
  • External temperature sensor
  • Safety functionalities: Calibration microcontroller, sensor connection, analog frontend
  • Adjustable to nearly all resistive bridge sensor types
  • Digital compensation of sensor offset, sensitivity, temperature drift, and non-linearity
  • Output options: Ratiometric analog voltage output (5 – 95% in maximum, 12.4 bit resolution) or ZACwire (digital one-wire-interface)
  • Sensor biasing by voltage
  • High voltage protection up to 33 V
  • Supply current: max. 5.5mA
  • Reverse polarity and short circuit protection
  • Wide operation temperature up to -40 and +150°C
  • Traceability by user-defined EEPROM entries

ZSSC3138 Features

  • Adjustable to nearly all resistive bridge sensor types, analog gain of 420, overall gain up to 1680
  • Enhanced sample rate up to 7.8 kHz
  • High ADC resolution 15/16 Bit
  • Safety functionality sensor connection
  • Internal temperature compensation
  • Digital compensation of sensor offset, sensitivity, temperature drift, and non-linearity
  • Output options: Ratiometric analog voltage output (5 – 95% in maximum, 12.4 bit resolution) or ZACwire (digital one-wire-interface)
  • Sensor biasing by voltage
  • High voltage protection up to 33 V
  • Supply current: Max. 5.5mA
  • Reverse polarity and short circuit protection
  • Wide operation temperature range between -40 and +150°C
  • Traceability by user-defined EEPROM entries

More info: Zentrum Mikroelektronik Dresden AG (ZMDI)