ZHCSH28C September 2017 – May 2025 TPA3221
PRODUCTION DATA
- 1
- 1 特性
- 2 應用
- 3 說明
- 4 Device Comparison Table
- 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 Audio Characteristics (BTL)
- 6.7 Audio Characteristics (PBTL)
- Typical Characteristics, BTL Configuration, AD-mode
- Typical Characteristics, PBTL Configuration, AD-mode
- 7 Parameter Measurement Information
-
8 Detailed Description
- 8.1 Overview
- 8.2 Functional Block Diagrams
- 8.3 Feature Description
- 8.4
Device Functional Modes
- 8.4.1 Powering Up
- 8.4.2 Powering Down
- 8.4.3 Device Reset
- 8.4.4 Device Soft Mute
- 8.4.5
Device Protection System
- 8.4.5.1 Overload and Short Circuit Current Protection
- 8.4.5.2 Signal Clipping and Pulse Injector
- 8.4.5.3 DC Speaker Protection
- 8.4.5.4 Pin-to-Pin Short Circuit Protection (PPSC)
- 8.4.5.5 Overtemperature Protection OTW and OTE
- 8.4.5.6 Undervoltage Protection (UVP) and Power-on Reset (POR)
- 8.4.5.7 Fault Handling
-
9 Application and Implementation
- 9.1 Application Information
- 9.2 Typical Applications
- 9.3 Power Supply Recommendations
- 9.4 Layout
- 10Device and Documentation Support
- 11Revision History
- 12Mechanical, Packaging, and Orderable Information
8.3.1.1 Input Configuration, Gain Setting And Controller/Peripheral Operation
TPA3221 is designed to accept either a differential or a single-ended audio input signal. To accept a wide range of system front ends TPA3221 has selectable input gain that allows full scale output with a wide range of input signal levels.
Best system noise performance is obtained with balanced audio interface. However, to be used in systems with only a single ended audio input signal available, one input terminal can be connected to AC ground, to accept single ended audio input signals.
Figure 8-4 Balanced Audio Input ConfigurationIn systems with single ended audio inputs the device gain typically needs to be set higher than for systems with balanced audio input signals.
Figure 8-5 Single Ended Audio Input Configuration