ZSSC3135BA1D

Overview

The ZSSC3135BA1D is a sensor signal conditioner IC 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 offers a sample rate up to 200Hz and ADC resolution of 13/14 bits. Output options include ratiometric analog voltage (12.4-bit resolution) or ZACwire digital interface. Supply current is max 5.5mA, with operation temperature range -40°C to +150°C and high voltage protection up to 33V.

Feature Summary

• Internal 16-bit RISC microcontroller performs real-time correction of sensor offset, sensitivity, temperature drift, and nonlinearity.
• Supports external temperature sensor biasing for enhanced piezoresistive sensor accuracy.
• Provides flexible output via ratiometric analog voltage or ZACwire digital one-wire interface.
• Includes reverse polarity and short circuit protection with high voltage tolerance.

Applications

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

Procurement Notes

Verify package type and suffix details against official Renesas documentation before ordering. Confirm availability status as distribution channels may vary. Ensure compatibility with system voltage requirements and interface protocols. Check for moisture sensitivity level constraints during storage and handling. Validate that the specific variant meets all automotive or industrial qualification standards required for the target application.

Selection Notes

Select this component when precise amplification and digital correction of piezoresistive bridge signals are required. The integrated MCU simplifies calibration by storing coefficients in EEPROM. Consider the ZACwire interface if digital communication is preferred over analog outputs. Ensure the 5.5mA supply current fits the power budget. Verify that the -40°C to +150°C operating range suits the environmental conditions.

Part Context

The ZSSC3135BA1D belongs to the ZSSC313x series of CMOS integrated circuits. This family targets automotive and industrial sensor applications, offering highly accurate amplification and sensor-specific correction. Other members like ZSSC3131 focus on cost-optimized switches, while ZSSC3135 is tailored for piezoresistive elements with higher analog gain capabilities.

Replacement Considerations

Check for direct pin-compatible substitutes within the ZSSC313x family. Verify if alternative sensor signal conditioners offer similar gain and interface options. Ensure any replacement maintains the required temperature range and protection features.