Overview
The TPA6120A2 is a high-fidelity headphone amplifier produced by Texas Instruments. This device is designed to deliver exceptional audio quality, making it an ideal choice for applications requiring high-power output and low noise. The TPA6120A2 features a current-feedback architecture, which ensures extremely low total harmonic distortion (THD) and high signal-to-noise ratio (SNR), allowing the music to be heard clearly without the amplifier introducing significant distortion.
Key Specifications
| Parameter | Min | |||
|---|---|---|---|---|
| Supply Voltage (xVCC+ to xVCC-) | 9 | 33 | V | |
| Input Voltage (VI) | ± VCC | V | ||
| Differential Input Voltage (VID) | 6 | V | ||
| Minimum Load Impedance | 8 | Ω | ||
| Operating Free-Air Temperature Range | -40 | 85 | °C | |
| Operating Junction Temperature Range | -40 | 150 | °C | |
| Storage Temperature Range | -40 | 125 | °C | |
| Input Offset Voltage (VIO) | 2 | 5 | mV | |
| Power Supply Rejection Ratio (PSRR) | 75 | dB | ||
| Supply Current (ICC) per Channel | 15 | mA | ||
| Output Current (IO) per Channel | 700 | mA | ||
| Output Voltage Swing | 11.8 to -11.5 | 12.5 to -12.2 | V | |
| Signal-to-Noise Ratio (SNR) A-Weighted | 128 | dB | ||
| Total Harmonic Distortion + Noise (THD+N) | -112 | dB |
Key Features
- Current-Feedback Architecture: Delivers extremely low noise and high fidelity audio quality.
- High Signal-to-Noise Ratio (SNR): Up to 128 dB A-weighted, ensuring clear audio without significant background noise.
- Low Total Harmonic Distortion + Noise (THD+N): As low as -112 dB, providing high-quality audio output.
- High Output Voltage Noise: 0.9 µVrms at high bandwidth, contributing to the overall high fidelity of the amplifier.
- Wide Range of Gain Settings: The amplifier can be used over a wide range of gain settings, making it versatile for various applications.
- Dual Package Options: Available in 20-pin HSOP and 14-pin VQFN packages with thermal PAD for efficient heat dissipation.
Applications
The TPA6120A2 is suitable for a variety of high-fidelity audio applications, including:
- Professional Audio Equipment: Studio headphones, audio mixers, and other professional audio gear.
- High-End Consumer Audio: Premium headphones, home audio systems, and audiophile-grade equipment.
- Portable Audio Devices: High-quality portable audio players and headphones.
- Audio Interfaces and DACs: Used in conjunction with digital-to-analog converters (DACs) for high-quality audio output.
Q & A
- What is the TPA6120A2?
The TPA6120A2 is a high-fidelity headphone amplifier produced by Texas Instruments.
- What is the key architecture of the TPA6120A2?
The TPA6120A2 uses a current-feedback architecture.
- What are the typical SNR and THD+N values for the TPA6120A2?
The SNR is up to 128 dB A-weighted, and the THD+N is as low as -112 dB.
- What are the package options for the TPA6120A2?
The TPA6120A2 is available in 20-pin HSOP and 14-pin VQFN packages.
- What is the recommended operating temperature range for the TPA6120A2?
The operating free-air temperature range is -40°C to 85°C.
- What is the minimum load impedance for the TPA6120A2?
The minimum load impedance is 8 Ω.
- What is the maximum output current per channel for the TPA6120A2?
The maximum output current per channel is 700 mA.
- How does the TPA6120A2 handle power dissipation?
The device has an exposed PowerPAD on the underside that acts as a heatsink and must be connected to a thermally dissipating plane.
- What are some common applications for the TPA6120A2?
Common applications include professional audio equipment, high-end consumer audio, portable audio devices, and audio interfaces.
- What is the power supply rejection ratio (PSRR) of the TPA6120A2?
The PSRR is 75 dB.
