TPA721 具有工作态高电平关断状态的单声道 AB 类音频放大器

The TPA721 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 TPA721 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 7 µA during shutdown.

	TPA710	TPA711	TPA721	TPA731	TPA741	TPA751
Speaker Channels	Mono	Mono	Mono	Mono	Mono	Mono
Headphone Channels		Mono
Speaker Amp Type	Class-AB	Class-AB	Class-AB	Class-AB	Class-AB	Class-AB
Output Power (W)	0.7	0.7	0.7	0.7	0.7	0.7
PSRR (dB)	85	85	85	85	85	85
Supply Min (Min) (Volt)	2.5	2.5	2.5	2.5	2.5	2.5
Supply Max (Max) (Volt)	5.5	5.5	5.5	5.5	5.5	5.5

TPA721 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
- 700 mW at VDD = 5 V, BTL
- 250 mW at VDD = 3.3 V, BTL
Integrated Depop Circuitry
Thermal and Short-Circuit Protection
Surface-Mount Packaging
- SOIC
- PowerPAD™ MSOP

TPA721 工具与软件

培训内容	型号	软件/工具类型
音频的快速搜索选择工具	AUDIO_SELECTION_TOOL	免费评估工具
TPA721 评估模块 (EVM)	TPA721EVM	开发电路板/EVM