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1 / 24 page ![]() Sensor Signal Conditioner for Safety Switch Applications ZSSC3136 Datasheet © 2016 Integrated Device Technology, Inc. 1 January 22, 2016 GND OUT VCC Sensor Module ZSSC3136 Brief Description The ZSSC3136 is a member of the ZSSC313x family of CMOS integrated circuits for automotive/ industrial sensor applications. All family members are well suited for highly accurate amplification and sensor-specific correction of resistive bridge sensor signals. An internal 16-bit RISC microcontroller running a correction algorithm compensates sensor offset, sensitivity, temperature drift, and non-linearity of the connected sensor element. The required calibration coefficients are stored by the one-pass calibration procedure in an on-chip EEPROM. The ZSSC3136 is optimized for SIL (Safety Integrity Level) rated switch applications. The integrated adjustable digital filter offers the possibility of setting up fast switching real-time applications as well as stabilized switching applications in the case of disturbed or unstable input signals. In addition to the general features for switch appli- cations, the ZSSC3136 offers the capability to set up safety-relevant SIL2 rated switches due to its extended safety functionalities. Features • Analog gain of 105, maximum overall gain of 420 • Sample rate: 200 Hz maximum • ADC resolution: 13/14 bit • External temperature sensor • Safety functionalities: Calibration microcontroller, sensor connection, analog front-end • 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 TM (digital One-Wire Interface (OWI)) • 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: -40 to +150°C • Traceability by user-defined EEPROM entries * Note: I 2C™ is a trademark of NXP. ** FSO = Full Scale Output. Benefits • Capability for setting up SIL level 2 applications • Application-focused feature set • No external trimming components required • Only a few external protection devices needed • PC-controlled configuration and one-pass/ end-of-line calibration via I²C™* or ZACwire TM interface: simple, cost-efficient, quick, and pre- cise • High accuracy (0.25% FSO** @ -25 to +85°C; 0.5% FSO @ -40 to +125°C) • Optimized for automotive/ industrial environment due to robust protection circuitries, excellent electromagnetic compatibility and AEC-Q100 qualification Available Support • Evaluation Kits • Application Notes • Mass Calibration System Physical Characteristics • Supply voltage 4.5 to 5.5 V • Operation temperature: -40°C to +125°C (-40°C to +150°C extended temperature range depending on product version) • Available in RoHS-compliant JEDEC-SSOP14 package or delivery as die ZSSC3136 Minimum Application Requirements |
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