ZSSC3135BA2R

Overview

The ZSSC3135BA2R is a sensor signal conditioner from the ZSSC313x family, designed for automotive and industrial piezoresistive bridge sensors. It features an analog gain of 105 and overall digital gain up to 420. The device includes a 16-bit RISC microcontroller for offset, sensitivity, temperature drift, and nonlinearity compensation, with coefficients stored in on-chip EEPROM. It supports sample rates up to 200Hz and offers 13/14-bit ADC resolution. Output options include ratiometric analog voltage (12.4-bit resolution) or ZACwire™ digital interface. Operating voltage ranges from 4.5V to 5.5V, with supply current max 5.5mA and operation temperature from -40°C to +150°C.

Feature Summary

• Internal 16-bit RISC microcontroller performs real-time digital compensation for sensor offset, sensitivity, temperature drift, and nonlinearity.
• High analog gain stage of 105 combined with optional external temperature sensor biasing suits piezoresistive applications.
• Single-pass calibration procedure stores correction coefficients in on-chip EEPROM for traceability.
• Provides high voltage protection up to 33V, reverse polarity protection, and short circuit protection.

Applications

• Automotive pressure and force sensing systems
• Industrial piezoresistive bridge sensor interfaces
• Cost-optimized switch applications requiring high accuracy

Procurement Notes

Verify the specific suffix 'BA2R' against official Renesas documentation to confirm package type and reel quantity. Datasheets may list variants like BA1B or BE1D; ensure the ordering code matches the required physical form factor and moisture sensitivity level. Confirm availability status as product lines may transition between active and obsolete statuses.

Selection Notes

Select this component when interfacing with piezoresistive bridge sensors requiring high analog gain and precise digital linearization. The integrated temperature compensation and EEPROM storage simplify calibration processes. Ensure the application requires the specified 4.5V to 5.5V supply range and operates within the -40°C to +150°C temperature envelope.

Part Context

The ZSSC3135BA2R belongs to the ZSSC313x series of CMOS integrated circuits. This family targets automotive and industrial environments, offering signal conditioning for resistive bridge sensors. The ZSSC3135 variant is specifically optimized for piezoresistive elements, distinguishing it from other family members like the ZSSC3131 which focuses on cost-sensitive switch applications.

Replacement Considerations

Check for direct pin-compatible substitutes within the ZSSC313x family, such as ZSSC3135BA1B or ZSSC3135BE1D, verifying that package dimensions and electrical parameters match exactly. No alternative part numbers are confirmed in the provided data.