ZHCSIA5A July 2018 – December 2018 INA253
PRODUCTION DATA.
- 1 特性
- 2 应用
- 3 说明
- 4 修订历史记录
- 5 Device Comparison Table
- 6 Pin Configuration and Functions
- 7 Specifications
-
8 Detailed Description
- 8.1 Overview
- 8.2 Functional Block Diagram
- 8.3 Feature Description
- 8.4
Device Functional Modes
- 8.4.1 Adjusting the Output Midpoint With the Reference Pins
- 8.4.2 Reference Pin Connections for Unidirectional Current Measurements
- 8.4.3 Ground Referenced Output
- 8.4.4 Reference Pin Connections for Bidirectional Current Measurements
- 8.4.5 Output Set to Mid-Supply Voltage
- 8.4.6 Output Set to Mid-External Reference
- 8.4.7 Output Set Using Resistor Divide
- 9 Application and Implementation
- 10Power Supply Recommendations
- 11Layout
- 12器件和文档支持
- 13机械、封装和可订购信息
9.2.2 Speaker Enhancements and Diagnostics Using Current Sense Amplifier
CLASS-D audio amplifiers in conjunction with the INA253 provide accurate speaker load current. Speaker load current is used to determine speaker diagnostics, and can further be expanded to measure key speaker parameters, such as speaker coil resistance and speaker real-time ambient temperature.
Figure 43. Current Sensing in a CLASS-D Subsystem