TPA321 - 具有差动输入的 350mW 低压音频功率放大器

TPA321是TI德州仪器公司的一款扬声器放大器（AB类/D类）产品，TPA321是具有差动输入的 350mW 低压音频功率放大器，本站介绍了TPA321的封装应用图解、特点和优点、功能等，并给出了与TPA321相关的TI元器件型号供参考。

TPA321 - 具有差动输入的 350mW 低压音频功率放大器 - 扬声器放大器（AB类/D类） - 低功耗放大器 - 德州仪器

产品描述

The TPA321 is a bridge-tied load (BTL) audio power amplifier developed especially for low-voltage applications where internal speakers are required. Operating with a 3.3-V supply, the TPA321 can deliver 250-mW of continuous power into a BTL 8- load at less than 1% THD+N throughout voice band frequencies. Although this device is characterized out to 20 kHz, its operation was optimized for narrower band applications such as cellular communications. The BTL configuration eliminates the need for external coupling capacitors on the output in most applications, which is particularly important for small battery-powered equipment. This device features a shutdown mode for power-sensitive applications with a quiescent current of 0.15 µA during shutdown. The TPA321 is available in an 8-pin SOIC surface-mount package and the surface-mount PowerPAD™ MSOP, which reduces board space by 50% and height by 40%.

产品特性

Fully Specified for 3.3-V and 5-V Operation
Wide Power Supply Compatibility 2.5 V - 5.5 V
Output Power for RL = 8
- 350 mW at VDD = 5 V
- 250 mW at VDD = 3.3 V
Ultralow Supply Current in Shutdown Mode...0.15 µA
Thermal and Short-Circuit Protection
Surface-Mount Packaging
- SOIC
- PowerPAD™ MSOP

PowerPAD is a trademark of Texas Instruments.

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