FDC2214QRGHTQ1

Overview

The FDC2214QRGHTQ1 is a four-channel, 28-bit capacitance-to-digital converter designed for automotive capacitive sensing applications. It operates within a supply voltage range of 2.7 V to 3.6 V and supports an ambient operating temperature from -40°C to +125°C. The device achieves a maximum output rate of 4.08 ksps per active channel with a typical active current consumption of 2.1 mA. It features an I2C interface, EMI-resistant architecture, and AEC-Q100 qualification.

Feature Summary

• AEC-Q100 qualified for automotive environments with Grade 1 temperature rating
• Narrow-band architecture providing high rejection of noise and interferers
• Supports up to 28-bit resolution with low RMS noise performance
• Configurable shutdown mode for significant power reduction

Applications

• EMI-Resistant Proximity Sensor
• Automotive Door / Kick Sensors
• Foreign Object Detection

Procurement Notes

Verify the specific suffix 'RGHT' against the manufacturer's official orderable addendum to confirm package dimensions and tape-and-reel specifications. Ensure the Q1 designation aligns with your system's automotive reliability requirements. Cross-reference the datasheet revision history for any updates to electrical characteristics or pin configurations before finalizing procurement.

Selection Notes

Select this component when four independent capacitive channels are required for high-resolution measurement in noisy environments. The 28-bit resolution is suitable for detecting minute capacitance changes. Verify that the host processor supports the I2C protocol and can handle the specified clock frequencies. Consider the thermal resistance values if the device will operate at the upper limit of the temperature range.

Part Context

This part belongs to the FDC2x1x-Q1 family of multi-channel capacitance-to-digital converters. It shares architectural similarities with the FDC2114-Q1 but offers higher resolution (28-bit vs 12-bit) at the cost of lower maximum sample rates. The family is designed to replace traditional switched-capacitance solutions in demanding automotive and industrial sensing applications.

Replacement Considerations

FDC2214RGHR: Non-automotive grade commercial version with identical electrical specifications.

FAQ

What is the maximum sensor excitation frequency supported by the FDC2214QRGHTQ1?

The device supports a sensor excitation frequency range from 10 kHz to 10 MHz.

How does the device handle EMI in capacitive sensing applications?

It employs an innovative narrow-band based architecture that offers high rejection of noise and interferers, maintaining performance even in high-noise environments.

What is the power consumption in shutdown mode?

The supply current in shutdown mode is typically 200 nA.