LDC2114 Datasheet | Texas Instruments

Features - 1 Low Power Consumption: - One Button: 6 µA at 0.625 SPS - Two Buttons: 72 µA at 20 SPS - Configurable Button Scan Rates: - 0.625 SPS to 80 SPS - Force Level Measurement of Touch Buttons - Independent Channel Operation: - Two Channels for LDC2112 - Four Channels for LDC2114 - Integrated Algorithms to Enable: - Adjustable Force Threshold per Button - Environmental Shift pensation - Simultaneous Button Press Detection - Supports Independent Operation without MCU - Robust EMI Performance: - Allows for CISPR 22 and CISPR 24 pliance - Operating Voltage Range: 1.8 V ± 5% - Temperature Range: - 40 °C to +85 °C - Interface: - I2C - Dedicated Logic Output per Channel 2 Applications Touch Buttons and Force Level Measurements on Different Materials, Including Metal, Plastic, and Glass for: - Consumer Electronics: - Smartphones - Smart Watches and Other Wearable Devices - Smart Speakers - Tablets/PCs - Virtual Reality Headsets - Sound Bars - Industrial Applications: - Televisions - Handheld Devices - Home Appliances - HMI Panels and Keypads 3 Description Inductive sensing technology enables touch button design for human machine interface (HMI) on a wide variety of materials such as metal, glass, plastic, and wood, by measuring small deflections of conductive targets. The sensor for an inductive touch system is a coil that can be implemented on a small PCB located behind the panel and protected from the environment. Inductive sensing solution is insensitive to humidity or non-conductive contaminants such as oil and dirt. It is able to automatically correct for any deformation in the conductive targets. The LDC2112/LDC2114 is a multi-channel low-noise inductance to digital converter with integrated algorithms to implement inductive touch applications. The device employs an innovative LC resonator that offers high rejection of noise and interference. The LDC2112/LDC2114 can reliably detect material deflections of less than 200...