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
• Sensing Range Beyond Two Coil Diameters
• 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
• 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

3 Description
The LDC1612 and LDC1614 are 2- and 4-channel,
28-bit inductance to digital converters (LDCs) for
inductive sensing solutions. With multiple channels
and support for remote sensing, the LDC1612 and
LDC1614 enable the performance and reliability
benefits of inductive sensing to be realized at minimal
cost and power. The products are easy to use, only
requiring that the sensor frequency be within 1 kHz
and 10 MHz to begin sensing. The wide 1 kHz to 10
MHz sensor frequency range also enables use of
very small PCB coils, further reducing sensing
solution cost and size.
The high resolution channels allow for a much larger
sensing range, maintaining good performance
beyond two coil diameters. Well-matched channels
allow for differential and ratiometric measurements,
which enable designers to use one channel to
compensate their sensing for environmental and
aging conditions such as temperature, humidity, and
mechanical drift.
Given their ease of use, low power, and low system
cost these products enable designers to greatly
improve performance, reliability, and flexibility over
existing sensing solutions and to introduce brand new
sensing capabilities to products in all markets,
especially consumer and industrial applications.
These devices are easily configured via an I2C
interface. The two-channel LDC1612 is available in a
WSON-12 package and the four-channel LDC1614 is
available in a WQFN-16 package.