TPA711 具有单声道耳机驱动的单声道 AB 类音频放大器

The TPA711 is a bridge-tied load (BTL) or single-ended (SE) audio power amplifier developed especially for low-voltage applications where internal speakers and external earphone operation are required. Operating with a 3.3-V supply, the TPA711 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. A unique feature of the TPA711 is that it allows the amplifier to switch from BTL to SE on the fly when an earphone drive is required.

	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

TPA711 特性

Fully Specified for 3.3-V and 5-V Operation
Wide Power Supply Compatibility 2.5 V – 5.5 V
Output Power
- 700 mW at VDD = 5 V, BTL, RL = 8
- 85 mW at VDD = 5 V, SE, RL = 32
- 250 mW at VDD = 3.3 V, BTL, RL = 8
- 37 mW at VDD = 3.3 V, SE, RL = 32

Shutdown Control
- IDD = 7 uA at 3.3 V
- IDD = 50 uA at 5 V
BTL to SE Mode Control
Integrated Depop Circuitry
Thermal and Short-Circuit Protection
Surface-Mount Packaging
- SOIC
- PowerPAD™ MSOP

TPA711 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
TPA711MSOP 评估模块 (EVM)	TPA711MSOPEVM	开发电路板/EVM