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LDC2114 LDC2114

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描述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 smalldeflections of conductive targets. The sensor for an inductive touch system is a coil that can beimplemented on a small PCB located behind the panel and protected from the environment. Inductivesensing solution is insensitive to humidity or non-conductive contaminants such as oil and dirt. Itis able to automatically correct for any deformation in the conductive targets.The LDC2112/LDC2114 is a multi-channel low-noise inductance to digital converter withintegrated algorithms to implement inductive touch applications. The device employs an innovativeLC resonator that offers high rejection of noise and interference. The LDC2112/LDC2114 can reliablydetect material deflections of less than 200 nm.The LDC2112/LDC2114 includes an ultra-low power mode intended for power on/off buttons inbattery powered applications. The LDC2112/LDC2114 is available in a 16-pin DSBGA or TSSOP package. The 0.4 mm pitchDSBGA package has a very small 1.6 × 1.6 mm nominal body size with a maximum height of 0.4 mm. The0.65 mm pitch TSSOP package has a 5.0 × 4.4 mm nominal body size with a maximum height of 1.2 mm.特性 Low Power Consumption: One Button: 6 μA at 0.625 SPS Two Buttons: 72 μA at 20SPS Configurable Button Scan Rates: 0.625 SPS to 80 SPS Force LevelMeasurement of Touch ButtonsIndependent Channel Operation: Two Channels for LDC2112Four Channels forLDC2114Integrated Algorithms toEnable: Adjustable Force Threshold per Button Environmental ShiftCompensation Simultaneous Button PressDetection Supports Independent Operation withoutMCU Robust EMI Performance:Allows for CISPR 22 and CISPR 24Compliance Operating Voltage Range: 1.8 V ±5% Temperature Range: –40 °C to +85 °C Interface:I2C Dedicated Logic Output perChannelAll trademarks are the property of their respective owners.

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