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TPA721DG4
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TPA721DG4

Product Overview

Category

The TPA721DG4 belongs to the category of audio amplifiers.

Use

It is primarily used for amplifying audio signals in various electronic devices.

Characteristics

  • Compact size
  • High efficiency
  • Low power consumption
  • Wide input voltage range
  • Excellent audio quality

Package

The TPA721DG4 comes in a small outline package (SOP) with a specified pin configuration.

Essence

The essence of TPA721DG4 lies in its ability to amplify audio signals accurately and efficiently.

Packaging/Quantity

The TPA721DG4 is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

  • Supply Voltage: 2.5V to 5.5V
  • Output Power: 1.2W (typical)
  • Total Harmonic Distortion + Noise (THD+N): 0.1% (typical)
  • Signal-to-Noise Ratio (SNR): 90dB (typical)
  • Shutdown Current: 0.01μA (typical)

Detailed Pin Configuration

The TPA721DG4 has the following pin configuration:

  1. VDD - Power supply voltage
  2. GND - Ground reference
  3. SD - Shutdown control input
  4. IN+ - Positive audio input
  5. IN- - Negative audio input
  6. OUT - Amplified audio output

Functional Features

  • Low quiescent current
  • Thermal shutdown protection
  • Short-circuit and over-temperature protection
  • Pop and click suppression during power-up and shutdown

Advantages and Disadvantages

Advantages

  • Small form factor allows for easy integration into compact designs
  • High efficiency results in minimal power consumption
  • Wide input voltage range provides flexibility in various applications
  • Excellent audio quality enhances the overall listening experience

Disadvantages

  • Limited output power compared to higher wattage amplifiers
  • May require additional circuitry for certain applications with specific requirements

Working Principles

The TPA721DG4 operates as a class D amplifier, utilizing pulse-width modulation (PWM) techniques to amplify audio signals. It converts the input audio signal into a high-frequency square wave, which is then filtered and amplified to produce the desired output.

Detailed Application Field Plans

The TPA721DG4 finds applications in various electronic devices, including but not limited to: - Portable speakers - Headphones - Audio systems in automobiles - Home theater systems - Gaming consoles

Detailed and Complete Alternative Models

  1. TPA201DG4 - Similar audio amplifier with lower output power.
  2. TPA3116D2 - Higher wattage audio amplifier suitable for larger audio systems.
  3. LM386 - Basic audio amplifier with lower power requirements.

These alternative models offer different features and specifications, allowing users to choose the most suitable option based on their specific requirements.

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Liste 10 almindelige spørgsmål og svar relateret til anvendelsen af TPA721DG4 i tekniske løsninger

Sure! Here are 10 common questions and answers related to the application of TPA721DG4 in technical solutions:

  1. Q: What is TPA721DG4? A: TPA721DG4 is a mono audio amplifier integrated circuit (IC) designed for small form factor applications.

  2. Q: What is the maximum output power of TPA721DG4? A: The maximum output power of TPA721DG4 is typically 3 watts into a 4-ohm load.

  3. Q: Can TPA721DG4 operate on a single power supply? A: Yes, TPA721DG4 can operate on a single power supply ranging from 2.5V to 5.5V.

  4. Q: Is TPA721DG4 suitable for battery-powered devices? A: Yes, TPA721DG4 is well-suited for battery-powered devices due to its low quiescent current and wide operating voltage range.

  5. Q: Does TPA721DG4 have built-in thermal protection? A: Yes, TPA721DG4 has built-in thermal protection that prevents the IC from overheating during operation.

  6. Q: Can TPA721DG4 be used in stereo applications? A: No, TPA721DG4 is a mono audio amplifier and cannot be directly used in stereo applications. However, multiple ICs can be used to achieve stereo sound.

  7. Q: What is the input impedance of TPA721DG4? A: The input impedance of TPA721DG4 is typically 32 kilohms.

  8. Q: Does TPA721DG4 require external components for operation? A: Yes, TPA721DG4 requires external components such as capacitors, resistors, and a speaker for proper operation.

  9. Q: Can TPA721DG4 drive low-impedance speakers? A: Yes, TPA721DG4 can drive speakers with impedance as low as 4 ohms.

  10. Q: Is TPA721DG4 suitable for audio amplification in portable devices? A: Yes, TPA721DG4 is commonly used for audio amplification in portable devices such as smartphones, tablets, and portable speakers.

Please note that the answers provided here are general and may vary depending on specific application requirements and circuit design considerations.