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TPA4861 1W 单声道音频功率放大器

The TPA4861 is a bridge-tied load (BTL) audio power amplifier capable of delivering 1 W of continuous average power into an 8- load at 0.2% THD+N from a 5-V power supply in voiceband frequencies (f < 5 kHz). A BTL configuration eliminates the need for external coupling capacitors on the output in most applications. Gain is externally configured by means of two resistors and does not require compensation for settings of 2 to 20. Features of the amplifier are a shutdown function for power-sensitive applications as well as internal thermal and short-circuit protection. The TPA4861 works seamlessly with TI’s TPA4860 in stereo applications. The amplifier is available in an 8-pin SOIC surface-mount package that reduces board space and facilitates automated assembly.

	TPA4860	TPA4861
Speaker Channels	Mono	Mono
Speaker Amp Type	Class-AB	Class-AB
Output Power (W)	1	1
PSRR (dB)	75	75
Supply Min (Min) (Volt)	2.7	2.7
Supply Max (Max) (Volt)	5.5	5.5

TPA4861 特性

• 1-W BTL Output (5 V, 0.11 % THD+N)
• 3.3-V and 5-V Operation
• No Output Coupling Capacitors Required
• Shutdown Control (IDD = 0.6 µA)
• Uncompensated Gains of 2 to 20 (BTL Mode)
• Surface-Mount Packaging
• Thermal and Short-Circuit Protection
• High Supply Ripple Rejection Ratio (56 dB at 1 kHz)
• LM4861 Drop-In Compatible

TPA4861 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
TPA4861D	ACTIVE		0.80 | 1ku	SOIC (D) | 16	40 | TUBE
TPA4861DG4	ACTIVE		0.80 | 1ku	SOIC (D) | 16	40 | TUBE
TPA4861DR	ACTIVE		0.65 | 1ku	SOIC (D) | 16	2500 | LARGE T&R
TPA4861DRG4	ACTIVE		0.65 | 1ku	SOIC (D) | 16	2500 | LARGE T&R

TPA4861 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
TPA4861D	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPA4861D	TPA4861D
TPA4861DG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPA4861DG4	TPA4861DG4
TPA4861DR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPA4861DR	TPA4861DR
TPA4861DRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPA4861DRG4	TPA4861DRG4

TPA4861 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
TPA4861 评估模块 (EVM)	TPA4861EVM	开发电路板/EVM

TPA4861 应用技术支持与电子电路设计开发资源下载

1. TPA4861 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