TPA122DR

Product Overview

Category: Integrated Circuits (ICs)

Use: Audio Amplifier

Characteristics: - Mono Class D Amplifier - 2.5V to 5.5V Supply Voltage Range - Low Quiescent Current - Small Package Size

Package: SOIC-8

Essence: TPA122DR is an integrated circuit that functions as a mono audio amplifier. It is designed to operate within a supply voltage range of 2.5V to 5.5V, making it suitable for portable devices and low-power applications. The small package size of the SOIC-8 package allows for space-efficient designs.

Packaging/Quantity: TPA122DR is typically sold in reels or tubes containing multiple units. The exact quantity may vary depending on the supplier.

Specifications

• Power Supply Voltage Range: 2.5V to 5.5V
• Output Power: Up to 1.2W
• Efficiency: >90%
• Total Harmonic Distortion + Noise (THD+N): <0.1%
• Shutdown Current: <1µA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The TPA122DR IC has a total of 8 pins arranged as follows:

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Pin Configuration: 1. VDD - Power Supply Voltage 2. IN+ - Positive Input Terminal 3. IN- - Negative Input Terminal 4. GND - Ground 5. SHDN - Shutdown Control Input 6. OUT - Amplified Audio Output 7. NC - No Connection 8. VSS - Ground ```

Functional Features

• Mono audio amplification with high efficiency
• Low quiescent current for power-saving operation
• Shutdown control input for power management
• Small package size for space-constrained designs

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows for versatile applications - High efficiency results in minimal power consumption - Compact package size enables compact device designs - Shutdown control input enhances power management capabilities

Disadvantages: - Limited output power compared to larger amplifiers - May require additional components for certain applications

Working Principles

The TPA122DR is a Class D audio amplifier that utilizes pulse-width modulation (PWM) techniques to amplify the audio signal. It operates by rapidly switching the output stage between two states, effectively reproducing the input signal with high fidelity. The high efficiency of Class D amplifiers makes them suitable for battery-powered devices and low-power applications.

Detailed Application Field Plans

The TPA122DR can be used in various audio amplification applications, including but not limited to: - Portable audio devices - Headphone amplifiers - Bluetooth speakers - Home audio systems - Automotive audio systems

Detailed and Complete Alternative Models

1. TPA3116D2 - Stereo Class D Audio Amplifier
2. LM386 - Mono Audio Amplifier
3. MAX9744 - 20W Stereo Class D Audio Amplifier
4. TDA7297 - Dual Bridge Audio Amplifier

These alternative models offer different features and specifications, providing options for various application requirements.

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