ZSSC3123AI2R

Overview

The ZSSC3123AI2R is a cLite capacitive sensor signal conditioner manufactured by Renesas Electronics. It operates on a single supply voltage ranging from 2.3 V to 5.5 V with a typical operating current of 100 uA. The device features a differential input and provides digital output via I2C, Serial, or SPI interfaces. It supports both internal and external reference types and delivers an output current of 20 mA through open drain or push-pull configurations. Designed for surface mount installation, it functions within a temperature range of -40°C to +125°C and is housed in a TSSOP-14 package.

Feature Summary

• CMOS integrated circuit architecture designed for capacitive sensing applications
• Supports multiple digital communication protocols including I2C, Serial, and SPI
• Configurable reference selection allowing use of either internal or external references

Applications

• Capacitive touch interface systems
• Proximity detection circuits
• Level sensing applications

Procurement Notes

Verify the specific suffix 'AI2R' against official Renesas documentation to confirm the tape and reel packaging configuration and temperature grade. Ensure compatibility with the intended PCB footprint for the TSSOP-14 package. Cross-reference the datasheet revision date to validate electrical characteristics before finalizing procurement specifications.

Selection Notes

Select this component when a low-power, single-channel capacitive signal conditioner with flexible digital interface options is required. Consider the TSSOP-14 package constraints and the 2.3 V to 5.5 V supply range. Evaluate the need for differential inputs and the availability of internal versus external reference capabilities for the specific sensor design.

Part Context

The ZSSC3123AI2R belongs to the Renesas cLite family of capacitive sensor signal conditioners. This series integrates signal conditioning and digital conversion for capacitive sensors. The AI2R variant specifically denotes the industrial temperature grade and TSSOP-14 tape and reel packaging format within the broader product line.

Replacement Considerations

Consult the Renesas official lifecycle status page for confirmed obsolescence notices. Verify if alternative suffixes such as AA2R or AI7R offer identical electrical performance with different packaging formats. No direct cross-manufacturer substitutes are documented in the provided source material.