TPA751 - 单声道差动输入、AB 类音频放大器，具有低电平有效关断

TPA751是TI德州仪器公司的一款扬声器放大器（AB类/D类）产品，TPA751是单声道差动输入、AB 类音频放大器，具有低电平有效关断，本站介绍了TPA751的封装应用图解、特点和优点、功能等，并给出了与TPA751相关的TI元器件型号供参考。

TPA751 - 单声道差动输入、AB 类音频放大器，具有低电平有效关断 - 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 TPA751 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 TPA751 can deliver 250-mW of continuous power into a BTL 8- load at less than 0.6% THD+N throughout voice band frequencies. Although this device is characterized out to 20 kHz, its operation is optimized for narrower band applications such as wireless 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 supply current of 1.5 nA during shutdown. The TPA751 is available in a 3.0 × 3.0 mm MicroStar Junior™ (BGA), 8-pin SOIC surface-mount package and a surface-mount PowerPAD™ MSOP.

产品特性

Fully Specified for 3.3-V and 5-V Operation
Wide Power Supply Compatibility 2.5 V – 5.5 V
Power Supply Rejection at 217 Hz
- 84 dB at VDD = 5 V
- 81 dB at VDD = 3.3 V
Output Power for RL = 8
- 700 mW at VDD = 5 V
- 250 mW at VDD = 3.3 V
Ultralow Supply Current in Shutdown Mode . . . 1.5 nA
Thermal and Short-Circuit Protection
Surface-Mount Packaging
- SOIC
- PowerPAD™ MSOP
- MicroStar Junior™ (BGA)

PowerPAD and MicroStar Junior are trademarks of Texas Instruments.

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