TPA731 具有工作态高电平关断状态的单声道、差动输入、AB 类音频放大器

The TPA731 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 TPA731 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.

	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

TPA731 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
- 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

TPA731 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
TPA731D	ACTIVE	-40 to 85	0.42 \| 1ku	SOIC (D) \| 8	75 \| TUBE
TPA731DG4	ACTIVE	-40 to 85	0.42 \| 1ku	SOIC (D) \| 8	75 \| TUBE
TPA731DGN	ACTIVE	-40 to 85	0.55 \| 1ku	MSOP-PowerPAD (DGN) \| 8	80 \| TUBE
TPA731DGNG4	ACTIVE	-40 to 85	0.55 \| 1ku	MSOP-PowerPAD (DGN) \| 8	80 \| TUBE
TPA731DGNR	ACTIVE	-40 to 85	0.45 \| 1ku	MSOP-PowerPAD (DGN) \| 8	2500 \| LARGE T&R
TPA731DGNRG4	ACTIVE	-40 to 85	0.45 \| 1ku	MSOP-PowerPAD (DGN) \| 8	2500 \| LARGE T&R
TPA731DR	ACTIVE	-40 to 85	0.35 \| 1ku	SOIC (D) \| 8	2500 \| LARGE T&R
TPA731DRG4	ACTIVE	-40 to 85	0.35 \| 1ku	SOIC (D) \| 8	2500 \| LARGE T&R

TPA731 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
TPA731D	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPA731D	TPA731D
TPA731DG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPA731DG4	TPA731DG4
TPA731DGN	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPA731DGN	TPA731DGN
TPA731DGNG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPA731DGNG4	TPA731DGNG4
TPA731DGNR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPA731DGNR	TPA731DGNR
TPA731DGNRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPA731DGNRG4	TPA731DGNRG4
TPA731DR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPA731DR	TPA731DR
TPA731DRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPA731DRG4	TPA731DRG4

TPA731 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
TPA731 评估模块 (EVM)	TPA731EVM	开发电路板/EVM