FDC2112DNTR

Overview

The FDC2112DNTRQ1 is a two-channel capacitance-to-digital converter designed for automotive applications, certified to AEC-Q100 standards. It features a 12-bit resolution and supports an I2C interface with a maximum clock frequency of 400 kHz. The device operates within a supply voltage range of 2.7 V to 3.6 V and functions across an extended temperature range from -40°C to +125°C. Packaged in a DSBGA-16 format, it integrates high-resolution sensing capabilities suitable for proximity detection and touch interfaces in demanding environments.

Feature Summary

• Automotive-grade certification ensures reliability in vehicle electronics
• High-resolution 12-bit capacitance measurement capability
• Robust anti-EMI architecture for stable operation in noisy conditions
• Standard I2C communication interface for system integration

Applications

• Capacitive touch buttons and sliders in automotive HMI systems
• Proximity sensing for door handle and trunk release mechanisms
• Liquid level detection in automotive fluid reservoirs
• Gesture recognition interfaces for infotainment controls

Procurement Notes

Verify the complete part number including the Q1 suffix for automotive qualification status. Confirm the package type matches the design requirements. Check the datasheet for specific ordering information regarding tape and reel quantities. Ensure compatibility with the target I2C bus voltage levels. Validate the operating temperature range against the final application environment specifications.

Selection Notes

Select this component when automotive certification is mandatory for the project. Choose this model over non-automotive variants if long-term availability and reliability are critical. Consider the 12-bit resolution limit compared to higher-resolution counterparts if sub-picofarad precision is required. Evaluate the DSBGA-16 footprint constraints during PCB layout planning. Verify that the I2C address configuration meets the system addressing scheme.

Part Context

This device belongs to the FDC2x1x family of capacitance-to-digital converters from Texas Instruments. The family includes variants like the FDC2114 and FDC2212, which offer different channel counts or resolution options. The FDC2112 specifically targets cost-sensitive automotive applications requiring two channels. It shares architectural similarities with industrial grade parts but undergoes stricter qualification processes.

Replacement Considerations

The FDC2112QDNTTQ1 is a verified alternative variant within the same series. Both devices share identical functional specifications and automotive qualifications. Verify pinout compatibility before substitution. Confirm that the specific package marking and traceability requirements match the assembly process.