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Details for LDC2114YFDR by Texas Instruments
Semiconductors - ICs > Data & Signal Conversion > Inductance to Digital Converters
4-CHANNEL HMI INDUCTIVE TOUCH BUTTONS
LDC2114YFDR image

LDC2114YFDR by Texas Instruments

4-CHANNEL HMI INDUCTIVE TOUCH BUTTONS
Features
Configurable Button Scan Rates: u2013 0.625 SPS to 80 SPS
Force Level Measurement of Touch Buttons
Independent Channel Operation: u2013 Two Channels for LDC2112 u2013 Four Channels for LDC2114
Integrated Algorithms to Enable: u2013 Adjustable Force Threshold per Button u2013 Environmental Shift Compensation u2013 Simultaneous Button Press Detection
Interface:
Low Power Consumption: u2013 One Button: 6 u00b5A at 0.625 SPS u2013 Two Buttons: 72 u00b5A at 20 SPS
Operating Voltage Range: 1.8 V u00b1 5%
Robust EMI Performance: u2013 Allows for CISPR 22 and CISPR 24 Compliance
Supports Independent Operation without MCU
Temperature Range: u201340 u00b0C to +85 u00b0C
Part Information
LDC2114YFDR image
RoHS Compliant
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 nm. The LDC2112/LDC2114 includes an ultra-low power mode intended for power on/off buttons in battery powered applications. The LDC2112/LDC2114 is available in a 16-pin DSBGA or TSSOP package. The 0.4 mm pitch DSBGA package has a very small 1.6 × 1.6 mm nominal body size with a maximum height of 0.4 mm. The 0.65 mm pitch TSSOP package has a 5.0 × 4.4 mm nominal body size with a maximum height of 1.2 mm.
Specifications
Product Range:
-
RoHS Phthalates Compliant:
Yes
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (27-Jun-2018)
Analogue Supply Voltage Max:
1.89V
Analogue Supply Voltage Min:
1.71V
Inductance (L) Resolution:
12bit
LDC Case Style:
DSBGA
LDC Interface Type:
I2C
No. of Pins:
16Pins
Alternate Descriptions
HMI Inductive Touch Button for Consumer and Low-Power Applications 4 Channel 1.8V 16-Pin DSBGA T/R Avnet America