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TPA311 0.35W 单声道音频功率放大器

The TPA311 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 TPA311 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. A unique feature of the TPA311 is that it allows the amplifier to switch from BTL to SE on the fly when an earphone drive is required.

	TPA301	TPA311	TPA321
Speaker Channels	Mono	Mono	Mono
Speaker Amp Type	Class-AB	Class-AB	Class-AB
Output Power (W)	0.35	0.35	0.35
PSRR (dB)	85	85	85
Supply Min (Min) (Volt)	2.5	2.5	2.5
Supply Max (Max) (Volt)	5	5.5	5.5

TPA311 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, BTL
  • 250 mW at VDD = 3.3 V, BTL
• Ultra-Low Quiescent Current in Shutdown Mode...0.15 µA
• Thermal and Short-Circuit Protection
• Surface-Mount Packaging
  • SOIC
  • PowerPAD™ MSOP

TPA311 芯片订购指南

器件	状态	温度	价格（美元）	封装 | 引脚	封装数量 | 封装载体	丝印标记
TPA311D	ACTIVE		0.36 | 1ku	SOIC (D) | 8	75 | TUBE
TPA311DG4	ACTIVE		0.36 | 1ku	SOIC (D) | 8	75 | TUBE
TPA311DGN	ACTIVE		0.46 | 1ku	MSOP-PowerPAD (DGN) | 8	80 | TUBE
TPA311DGNG4	ACTIVE		0.46 | 1ku	MSOP-PowerPAD (DGN) | 8	80 | TUBE
TPA311DGNR	ACTIVE		0.40 | 1ku	MSOP-PowerPAD (DGN) | 8	2500 | LARGE T&R
TPA311DGNRG4	ACTIVE		0.40 | 1ku	MSOP-PowerPAD (DGN) | 8	2500 | LARGE T&R
TPA311DR	ACTIVE		0.30 | 1ku	SOIC (D) | 8	2500 | LARGE T&R
TPA311DRG4	ACTIVE		0.30 | 1ku	SOIC (D) | 8	2500 | LARGE T&R

TPA311 质量与无铅数据

器件	环保计划*	铅/焊球涂层	MSL 等级/回流焊峰	环保信息与无铅 (Pb-free)	DPPM / MTBF / FIT 率
TPA311D	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPA311D	TPA311D
TPA311DG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPA311DG4	TPA311DG4
TPA311DGN	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPA311DGN	TPA311DGN
TPA311DGNG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPA311DGNG4	TPA311DGNG4
TPA311DGNR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPA311DGNR	TPA311DGNR
TPA311DGNRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPA311DGNRG4	TPA311DGNRG4
TPA311DR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPA311DR	TPA311DR
TPA311DRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPA311DRG4	TPA311DRG4

TPA311 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
TPA311 评估模块 (EVM)	TPA311EVM	开发电路板/EVM

TPA311 应用技术支持与电子电路设计开发资源下载

1. TPA311 数据资料 dataSheet 下载.PDF
2. TI 德州仪器扬声器放大器和调制器产品选型与价格 . xls