Multi-Channel 12-Bit Inductance to Digital Converter
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LDC1312, LDC1314
SNOSCZ0A – DECEM...
Description
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LDC1312, LDC1314
SNOSCZ0A – DECEMBER 2014 – REVISED MARCH 2018
LDC1312, LDC1314 Multi-Channel 12-Bit Inductance to Digital Converter (LDC) for Inductive Sensing
1 Features
1 Easy-to-Use – Minimal Configuration Required Up to 4 Channels With Matched Sensor Drive Multiple Channels Support Environmental and
Aging Compensation Remote Sensor Position of >20 cm Supports
Operation In Harsh Environments Pin-Compatible Medium and High-Resolution
Options: – LDC1312/4: 2/4-ch 12-Bit LDC – LDC1612/4: 2/4-ch 28-Bit LDC Supports Wide Sensor Frequency Range of 1 kHz to 10 MHz Power Consumption: – 35 µA Low Power Sleep Mode – 200 nA Shutdown Mode 2.7 V to 3.6 V Operation Multiple Reference Clocking Options: – Included Internal Clock For Lower System
Cost – Support for 40 MHz External Clock For Higher
System performance Immunity to DC Magnetic Fields and Magnets
2 Applications
Knobs in Consumer, Appliances, and Automotive Linear and Rotational Encoders Buttons in Home Electronics, Wearables,
Manufacturing, and Automotive Keypads in Manufacturing and Appliances Slider Buttons in Consumer Products Metal Detection in Industrial and Automotive POS and EPOS Flow Meters in Consumer and Appliances
Simplified Schematic
40 MHz
CLKIN
Target
Sensor 0
IN0A IN0B
Target
Sensor 1
IN1A IN1B
GND
LDC1312
3.3 V
VDD SD
INTB
3.3 V
GPIO GPIO
MCU
VDD
Core
SDA I2C SCL
ADDR
3.3...
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