LDC3114QPWTQ1

ADCs/DACs - Special Purpose Overview

The LDC3114-Q1 is a four-channel inductance-to-digital converter designed for automotive inductive touch and position sensing. It operates on a 1.8 V supply within a –40°C to +125°C range. The device supports raw data access for linear positioning and button algorithm modes with baseline tracking. Normal mode current reaches 2 mA at 40 SPS, while low power mode draws 35 µA at 1.25 SPS. It features a 400 kHz I2C interface (address 0x2A) and configurable push-pull outputs. Packaged in a 16-pin TSSOP, it provides robust EMI performance and AEC-Q100 qualification.

ADCs/DACs - Special Purpose Feature Summary

• Four independent channels with configurable scan rates from 0.625 SPS to 160 SPS
• Integrated button algorithms including baseline tracking and environmental shift compensation
• Raw data mode allows direct MCU access to inductance measurements for custom processing
• Robust EMI performance supporting CISPR 22 and CISPR 24 compliance

ADCs/DACs - Special Purpose Applications

• Steering wheel control touch buttons
• Automotive display module interfaces
• Door handle modules
• Powertrain position sensors
• Automatic transmission controls

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'QWTQ1' against the manufacturer's official orderable addendum to confirm package type and tape-and-reel specifications. Confirm that the component meets the required functional safety documentation standards if utilized in safety-critical systems. Ensure the design accounts for the specified humidity sensitivity class during storage and assembly.

ADCs/DACs - Special Purpose Selection Notes

Select this device when multi-channel inductive sensing with integrated post-processing is required. It is suitable for applications needing force-level detection or raw data access for linear position sensing. Verify that the sensor resonant frequency falls between 5 MHz and 30 MHz and that the parallel resonant impedance remains within the 350 Ω to 10 kΩ range for optimal operation.

ADCs/DACs - Special Purpose Part Context

This component belongs to the LDC3114 family of hybrid inductive touch converters. It shares pin and register compatibility with the LDC2114, facilitating potential migration paths. The Q1 suffix indicates automotive qualification under AEC-Q100 standards, ensuring reliability across the extended temperature range required for vehicle environments.

ADCs/DACs - Special Purpose Replacement Considerations

The LDC2114 is pin and register compatible with the LDC3114-Q1. Substitution requires verification of specific electrical characteristics and feature sets, such as scan rate limits and power consumption profiles, to ensure they meet the application requirements.