SNOA954D November   2019  – June 2021 LDC0851 , LDC1001 , LDC1001-Q1 , LDC1041 , LDC1051 , LDC1101 , LDC1312 , LDC1312-Q1 , LDC1314 , LDC1314-Q1 , LDC1612 , LDC1612-Q1 , LDC1614 , LDC1614-Q1 , LDC2112 , LDC2114 , LDC3114 , LDC3114-Q1

 

  1.   Trademarks
  2. 1LDC Applications
    1. 1.1 Axial Sensing
      1. 1.1.1 Buttons and Keypads
    2. 1.2 Event Counting
    3. 1.3 Other Types of Sensing
  3. 2Inductive Sensing Theory of Operation
  4. 3LDC Device Feature Overview
    1. 3.1 Sample Rate
    2. 3.2 Sensor L Measurement and Reference Frequency
    3. 3.3 Sensor RP Measurement
    4. 3.4 Sensor RP (Current) Drive Capability
    5. 3.5 Switch Output Functionality
    6. 3.6 Sensor Frequency Range
    7. 3.7 Multi-Channel Sensing
    8. 3.8 Power Management
    9. 3.9 Internal Algorithms
  5. 4Device Families
    1. 4.1 Inductive Touch Devices
      1. 4.1.1 Inductive Touch LDC Recommended Applications
    2. 4.2 Multichannel LDC Devices
      1. 4.2.1 Multi-Channel LDC Recommended Applications
      2. 4.2.2 LDC1101
        1. 4.2.2.1 LDC1101 Recommended Applications
      3. 4.2.3 LDC0851
        1. 4.2.3.1 Recommended Applications
  6. 5Summary
  7. 6Revision History

4.2.2 LDC1101

The LDC1101 has the highest RP measurement resolution of any LDC and significantly better device-to-device matching. It includes the same measurement core (the High Res L Measurement block) as the LDC1612, however with 24-bits of measurement resolution.

GUID-0E26C605-E6CF-4DB1-AD81-CE8BE29CD089-low.gif Figure 4-3 LDC1101 Block Diagram

The main features of this device include:

  1. Highest RP measurement resolution of 16 bits
  2. Supply voltage range of 1.71 V to 3.46 V
  3. Highest LDC sample rates of up to 180 kSPS
  4. Sensor frequency range of 500 kHz to 10 MHz
  5. Maximum reference frequency of 16 MHz
  6. Switch output functionality on SDO pin
  7. Small 10-pin DFN footprint with reduced external passive component count
  8. Two low power inactive modes – Sleep (<135 μA) and Shutdown (<1.4 μA)