FDC2212DNTR

Overview

The FDC2212DNTR is a Texas Instruments capacitance-to-digital converter designed for proximity and level sensing applications. It features two independent channels capable of converting capacitance changes into digital data with selectable resolutions of 12-bit or 28-bit. The device operates within a supply voltage range of 2.7 V to 3.6 V and supports an I2C interface with a maximum clock frequency of 400 kHz. It is housed in a WSON-12 package, suitable for surface-mount installation, and functions reliably across an operating temperature range from -40°C to +85°C.

Feature Summary

• EMI-resistant architecture ensures stable performance in electrically noisy environments
• Dual-channel design allows simultaneous measurement of multiple capacitive sensors
• Configurable resolution balances precision requirements with conversion speed

Applications

• Proximity detection systems
• Liquid level sensing
• Capacitive touch interfaces

Procurement Notes

Verify the specific suffix DNTR confirms the WSON-12 package and reel tape configuration. Confirm AEC-Q100 qualification status if automotive compliance is required, as standard versions may differ. Ensure the I2C address settings align with system bus constraints before finalizing procurement.

Selection Notes

Select this component when high-resolution capacitance monitoring is needed for two distinct sensors. Compare against the FDC2112 series if lower channel counts suffice. Verify that the 28-bit resolution meets the sensitivity requirements for the target application without excessive processing overhead.

Part Context

This part belongs to the FDC family of capacitance-to-digital converters from Texas Instruments. It shares architectural similarities with the FDC2212Q1 but differs in packaging and specific qualification standards. It serves as a specialized interface between analog capacitive elements and digital processing units.

Replacement Considerations

The FDC2212DNTT is a pin-compatible alternative using a tape-and-reel format instead of cut tape. The FDC2212Q1 offers automotive qualification but requires verification of package compatibility.