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LDC3114-Q1 4 通道混合电感式触控和电感数字转换器
ZHCSLR1B
December 2021 – December 2021
LDC3114-Q1
PRODUCTION DATA
CONTENTS
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LDC3114-Q1 4 通道混合电感式触控和电感数字转换器
1
特性
2
应用
3
说明
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Digital Interface
6.7
I2C Interface
6.8
Timing Diagram
6.9
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Multimode Operation
7.3.2
Multichannel and Single-Channel Operation
7.3.3
Raw Data Output
7.3.4
Button Output Interfaces
7.3.5
Programmable Button Sensitivity
7.3.6
Baseline Tracking
7.3.7
Integrated Button Algorithms
7.3.8
I2C Interface
7.3.8.1
I2C Interface Specifications
7.3.8.2
I2C Bus Control
7.4
Device Functional Modes
7.4.1
Normal Power Mode
7.4.2
Low Power Mode
7.4.3
Configuration Mode
7.5
Register Maps
7.5.1
LDC3114 Registers
7.5.2
Gain Table for Registers GAIN0, GAIN1, GAIN2, and GAIN3
8
Application and Implementation
8.1
Application Information
8.1.1
Theory of Operation
8.1.2
Designing Sensor Parameters
8.1.3
Setting COM Pin Capacitor
8.1.4
Defining Power-On Timing
8.1.5
Configuring Button or Raw Data Scan Rate
8.1.6
Programming Button or Raw Data Sampling Window
8.1.7
Scaling Frequency Counter Output
8.1.8
Setting Button Triggering Threshold
8.1.9
Tracking Baseline
8.1.10
Mitigating False Button Detections
8.1.10.1
Eliminating Common-Mode Change (Anti-Common)
8.1.10.2
Resolving Simultaneous Button Presses (Max-Win)
8.1.10.3
Overcoming Case Twisting (Anti-Twist)
8.1.10.4
Mitigating Metal Deformation (Anti-Deform)
8.1.11
Reporting Interrupts for Button Presses, Raw Data Ready and Error Conditions
8.1.12
Estimating Supply Current
8.2
Typical Application
8.2.1
Touch Button Design
8.2.1.1
Design Requirements
8.2.1.2
Detailed Design Procedure
8.2.1.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Documentation Support
11.1.1
Related Documentation
11.2
接收文档更新通知
11.3
支持资源
11.4
Trademarks
11.5
Electrostatic Discharge Caution
11.6
术语表
12
Mechanical, Packaging, and Orderable Information
12.1
Tape and Reel Information
重要声明
封装选项
机械数据 (封装 | 引脚)
PW|16
MPDS361A
散热焊盘机械数据 (封装 | 引脚)
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