LDC2112YFDR

ADCs/DACs - Special Purpose Overview

The LDC2112YFDR is a two-channel inductance-to-digital converter from Texas Instruments, designed for low-power human-machine interface applications. It operates on a single supply voltage ranging from 1.71 V to 1.89 V and features a 12-bit resolution. The device utilizes an I2C interface with a maximum clock frequency of 400 kHz. It functions within a temperature range of -40°C to +85°C and is housed in a 16-pin DSGBA-16 surface-mount package.

ADCs/DACs - Special Purpose Feature Summary

• Two-channel inductance-to-digital conversion with 12-bit resolution
• Integrated algorithms for touch sensing, including drift compensation and simultaneous press detection
• Ultra-low power consumption suitable for battery-operated devices
• I2C digital interface with dedicated logic outputs per channel

ADCs/DACs - Special Purpose Applications

• Touch buttons on metal, glass, plastic, or wood surfaces
• Force measurement applications
• Smartphones and wearable devices
• Consumer electronics such as smart speakers and tablets

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix YFDR against the manufacturer's datasheet to confirm the reel packaging configuration. Ensure compatibility with the required I2C bus speed and voltage levels before integration. Confirm that the DSGBA-16 footprint matches the design layout constraints.

ADCs/DACs - Special Purpose Selection Notes

Select this component when a two-channel solution is required for inductive touch sensing. Compare against the LDC2114 if four channels are needed. Verify that the 1.8 V nominal supply voltage aligns with the system power architecture. Consider the 16-pin package size relative to available PCB space.

ADCs/DACs - Special Purpose Part Context

This part belongs to the LDC2112/LDC2114 family of inductive touch solutions. These devices replace traditional capacitive touch sensors by measuring changes in inductance caused by conductive object proximity. The family offers high noise immunity and reliability in harsh environments compared to capacitive alternatives.

ADCs/DACs - Special Purpose Replacement Considerations

The LDC2114YFDR serves as a direct substitute for designs requiring four channels instead of two. Both parts share identical electrical characteristics, pinouts, and software compatibility, differing only in channel count.