TPA6141A2 - 25mW G 类 DirectPath? 立体声耳机放大器 (TPA6141)

TPA6141A2是TI德州仪器公司的一款耳机放大器产品，TPA6141A2是25mW G 类 DirectPath? 立体声耳机放大器 (TPA6141)，本站介绍了TPA6141A2的封装应用图解、特点和优点、功能等，并给出了与TPA6141A2相关的TI元器件型号供参考。

TPA6141A2 - 25mW G 类 DirectPath? 立体声耳机放大器 (TPA6141) - 耳机放大器 - 低功耗放大器 - 德州仪器

产品描述

The TPA6141A2 (also known as TPA6141) is a Class-G DirectPath stereo headphone amplifier with selectable gain. Class-G technology maximizes battery life by adjusting the voltage supplies of the headphone amplifier based on the audio signal level. At low level audio signals, the internal supply voltage is reduced to minimize power dissipation. DirectPathTM technology eliminates external DC-blocking capacitors.

The device features fully differential inputs with an integrated low pass filter to reduce system noise pickup between the audio source and the headphone amplifier and to reduce DAC out-of-band noise. The high power supply noise rejection performance and differential architecture provides increased RF noise immunity. For single-ended input signals, connect INL+ and INR+ to ground.

The device operates from a 2.5V to 5.5V supply voltage. Class-G operation keeps total supply current below 5.0mA while delivering 500µW per channel into 32. Shutdown mode reduces the supply current to less than 3µA and is activated through the EN pin.

The device has built-in pop suppression circuitry to completely eliminate disturbing pop noise during turn-on and turn-off. The amplifier outputs have short-circuit and thermal-overload protection along with ±8kV HBM ESD protection, simplifying end equipment compliance to the IEC 61000-4-2 ESD standard.

产品特性

TI Class-G Technology Significantly Prolongs Battery Life and Music Playback Time
- 0.6mA / Ch Quiescent Current
- 50% to 80% Lower Quiescent Current Than Ground-Referenced Class-AB Headphone Amplifiers
DirectPathTM Technology Eliminates Large Output DC-Blocking Capacitors
- Outputs Biased at 0V
- Improves Low Frequency Audio Fidelity
Active Click and Pop Suppression
Fully Differential Inputs Reduce System Noise
- Also Configurable as Single-Ended Inputs
SGND Pin Eliminates Ground Loop Noise
Wide Power Supply Range: 2.5 V to 5.5 V
100 dB Power Supply Noise Rejection
Built-in Input Low Pass Filter
Gain Settings: 0 dB and 6dB
Short-Circuit Current Limiter
Thermal-Overload Protection
±8 kV HBM ESD Protected Outputs
0,4 mm Pitch, 1,6 mm × 1,6 mm 16-Bump WCSP (YFF) Package
APPLICATIONS
- Cellular Phones / Music Phones
- Smart Phones
- Portable Media / MP3 Players
- Portable CD / DVD Players

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