Texas Instruments
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TPA6138A2PWR
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TPA6138A2PWR

Overview

Category: Audio Amplifier
Use: Headphone amplifier
Characteristics: High-performance, low-power, stereo headphone amplifier
Package: TSSOP-16
Essence: Amplifies audio signals for headphones
Packaging/Quantity: Tape and Reel (2500 units per reel)

Specifications

  • Supply Voltage: 2.5V to 5.5V
  • Output Power: Up to 138mW per channel into 16Ω load
  • Total Harmonic Distortion + Noise (THD+N): 0.006% at 1kHz, 100mW into 16Ω load
  • Signal-to-Noise Ratio (SNR): 98dB at 1kHz, 100mW into 16Ω load
  • Shutdown Current: 0.01μA (typical)
  • Gain Settings: 0dB, 3dB, 6dB, 9dB, 12dB, 15dB, 18dB, 21dB
  • Thermal Shutdown Protection

Pin Configuration

The TPA6138A2PWR has a total of 16 pins arranged as follows:

Pin 1: VDD Pin 2: SD Pin 3: GND Pin 4: INL- Pin 5: INL+ Pin 6: SHUTDOWN Pin 7: OUTL Pin 8: VDD Pin 9: OUTR Pin 10: INR+ Pin 11: INR- Pin 12: GND Pin 13: AGND Pin 14: BPVDD Pin 15: BIAS Pin 16: VDD

Functional Features

  • High-quality audio reproduction
  • Low power consumption
  • Wide supply voltage range
  • Adjustable gain settings
  • Thermal shutdown protection
  • Single-ended or differential input mode
  • Short-circuit and thermal protection

Advantages

  • Provides high-performance audio amplification for headphones
  • Low distortion and noise levels ensure clear sound reproduction
  • Flexible gain settings allow customization for different headphone types
  • Compact package size enables space-saving designs
  • Wide supply voltage range enhances compatibility with various systems

Disadvantages

  • Limited output power compared to some other headphone amplifiers
  • Requires external components for proper operation
  • Sensitive to improper grounding or layout design, which may introduce noise

Working Principles

The TPA6138A2PWR is a stereo headphone amplifier designed to amplify audio signals for headphone applications. It operates by receiving an audio input signal and amplifying it to drive the connected headphones. The amplifier provides adjustable gain settings to accommodate different headphone sensitivities and impedance levels.

The device features low-power consumption, making it suitable for portable devices where battery life is crucial. It also incorporates thermal shutdown protection to prevent damage from excessive heat. The TPA6138A2PWR can operate in single-ended or differential input mode, providing flexibility in system design.

Detailed Application Field Plans

The TPA6138A2PWR is commonly used in various audio applications, including:

  1. Portable media players
  2. Smartphones and tablets
  3. Personal computers and laptops
  4. Gaming consoles
  5. Audio interfaces
  6. Home theater systems
  7. Automotive infotainment systems

Its compact package size and low power consumption make it ideal for portable and battery-powered devices. The high-quality audio amplification provided by the TPA6138A2PWR enhances the listening experience for users of headphones across different application fields.

Detailed and Complete Alternative Models

  1. TPA6130A2PWR
  2. TPA6132A2PWR
  3. TPA6136A2PWR
  4. TPA6137A2PWR
  5. TPA6139A2PWR

These alternative models offer similar functionality and characteristics to the TPA6138A2PWR, providing options for designers based on specific requirements and preferences.

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Перелічіть 10 типових запитань і відповідей, пов’язаних із застосуванням TPA6138A2PWR у технічних рішеннях

Sure! Here are 10 common questions and answers related to the application of TPA6138A2PWR in technical solutions:

  1. Q: What is TPA6138A2PWR? A: TPA6138A2PWR is a stereo headphone amplifier integrated circuit (IC) that provides high-quality audio amplification for headphones or earphones.

  2. Q: What is the power supply voltage range for TPA6138A2PWR? A: The power supply voltage range for TPA6138A2PWR is typically between 2.5V and 5.5V.

  3. Q: Can TPA6138A2PWR drive low-impedance headphones? A: Yes, TPA6138A2PWR can drive low-impedance headphones as it is designed to handle loads as low as 8 ohms.

  4. Q: Does TPA6138A2PWR support differential inputs? A: Yes, TPA6138A2PWR supports differential inputs, which allows for better noise rejection and improved audio performance.

  5. Q: What is the maximum output power of TPA6138A2PWR? A: The maximum output power of TPA6138A2PWR is typically around 138mW per channel into a 16-ohm load.

  6. Q: Can TPA6138A2PWR be used in portable devices? A: Yes, TPA6138A2PWR is suitable for portable devices as it has low power consumption and small package size.

  7. Q: Does TPA6138A2PWR have built-in thermal protection? A: Yes, TPA6138A2PWR includes built-in thermal protection to prevent overheating and ensure safe operation.

  8. Q: Can TPA6138A2PWR be used in automotive applications? A: Yes, TPA6138A2PWR is suitable for automotive applications as it can operate over a wide temperature range (-40°C to 85°C).

  9. Q: Does TPA6138A2PWR have any built-in audio processing features? A: No, TPA6138A2PWR is a basic headphone amplifier IC without any built-in audio processing features.

  10. Q: What are the recommended external components for TPA6138A2PWR? A: The recommended external components for TPA6138A2PWR include input coupling capacitors, output coupling capacitors, and resistors for gain setting.

Please note that these answers are general and may vary depending on specific design considerations and requirements.