LDC3114-Q1中文资料用于低功耗接近和触控按钮感应的汽车类 4 通道电感数字转换器数据手册TI规格书

描述 Description

The LDC3114-Q1 is an inductive sensing device that enables touch button design for human machine interface (HMI) on a wide variety of materials by measuring small deflections of conductive targets using a coil that can be implemented on a small printed circuit board (PCB) located behind the panel. This technology can be used for precise linear position sensing of metal targets for automotive, consumer and industrial applications by allowing access to the raw data representing the inductance value. Inductive sensing solution is insensitive to humidity or non-conductive contaminants such as oil and dirt.

The button mode of LDC3114-Q1 is able to automatically correct for any deformation in the conductive targets. The LDC3114-Q1 offers well-matched channels, which allow for differential and ratiometric measurements which enable compensation of environmental and aging conditions such as temperature and mechanical drift. The LDC3114-Q1 includes an ultra-low power mode intended for power on/off buttons or position sensors in battery powered applications.

The LDC3114-Q1 is easily configured through an I2C interface. The LDC3114-Q1 is available in a 16-pin TSSOP package.

特性 Features

• AEC-Q100 qualified with the following results:
• Device HBM ESD classification level 2
• Functional Safety-Capable
• Multiple modes of operation:
• Button mode: button press detection with baseline tracking and advanced on-chip post processing
• Pin and register compatible to LDC2114
• Four independent channel operation
• 0.625 SPS to 160 SPS
• Advanced button press detection algorithms:
• Environmental shift compensation
• Low current consumption:
• Two buttons: 72 µA at 20 SPS
• Interface:
• 1.8-V logic output per channel for buttons