SNOSCY5C
August 2014 – October 2024
FDC1004
PRODUCTION DATA
1
1
Features
2
Applications
3
Description
4
Pin Configuration and Functions
5
Specifications
5.1
Absolute Maximum Ratings
5.2
ESD Ratings
5.3
Recommended Operating Conditions
5.4
Thermal Information
5.5
Electrical Characteristics
5.6
I2C Interface Voltage Level
5.7
I2C Interface Timing
5.8
Typical Characteristics
6
Detailed Description
6.1
Overview
6.2
Functional Block Diagram
6.3
Feature Description
6.3.1
The Shield
6.3.2
The CAPDAC
6.3.3
Capacitive System Offset Calibration
6.3.4
Capacitive Gain Calibration
6.4
Device Functional Modes
6.4.1
Single Ended Measurement
6.4.2
Differential Measurement
6.5
Programming
6.5.1
Serial Bus Address
6.5.2
Read/Write Operations
6.5.3
Device Usage
6.5.3.1
Measurement Configuration
6.5.3.2
Triggering Measurements
6.5.3.3
Wait for Measurement Completion
6.5.3.4
Read of Measurement Result
6.6
Register Maps
6.6.1
Registers
6.6.1.1
Capacitive Measurement Registers
6.6.1.2
Measurement Configuration Registers
6.6.1.3
FDC Configuration Register
6.6.1.4
Offset Calibration Registers
6.6.1.5
Gain Calibration Registers
6.6.1.6
Manufacturer ID Register
6.6.1.7
Device ID Register
7
Applications and Implementation
7.1
Application Information
7.1.1
Liquid Level Sensor
7.1.2
46
7.2
Typical Application
7.2.1
Design Requirements
7.2.2
Detailed Design Procedure
7.2.3
Application Curve
7.3
Best Design Practices
7.4
Initialization Set Up
7.5
Power Supply Recommendations
7.6
Layout
7.6.1
Layout Guidelines
7.6.2
Layout Example
8
Device and Documentation Support
8.1
Documentation Support
8.1.1
Related Documentation
8.2
Receiving Notification of Documentation Updates
8.3
Support Resources
8.4
Trademarks
8.5
Electrostatic Discharge Caution
8.6
Glossary
9
Revision History
10
Mechanical, Packaging, and Orderable Information
Data Sheet
FDC1004 4-Channel Capacitance-to-Digital Converter for Capacitive Sensing Applications