TPA6045A4C 具有 DirectPath (TM) 立体声耳机驱动和稳压器的 2W 立体声音频功率放大器

The TPA6045A4C is a stereo audio power amplifier and DirectPath headphone amplifier in a thermally enhanced, space-saving, 32-pin QFN package. The speaker amplifier is capable of driving 2.1 W per channel continuously into 4-Ω; loads at 5 V. The headphone amplifier achieves a minimum of 85 mW at 1% THD+N from a 5-V supply. A built-in internal 4-step gain control for the speaker amplifier and a fixed - 1.5 V/V gain for the headphone amplifier minimizes external components needed.

Independent shutdown control and dedicated inputs for the speaker and headphone allow the TPA6045A4C to simultaneously drive both headphones and internal speakers. Differential inputs to the speaker amplifiers offer superior power-supply and common-mode noise rejection

	TPA6040A4	TPA6041A4	TPA6043A4	TPA6045A4C	TPA6047A4
Speaker Channels	Stereo	Stereo	Stereo	Stereo	Stereo
Speaker Output Power/Ch (W)	2.3	2.6	2.3	2.6	2.6
Speaker Min Load (Ohms)	4	4	4	4	4
Headphone Channels	Stereo	Stereo	Stereo	Stereo	Stereo
Ground Centered Headphone	Yes	Yes	Yes	Yes	Yes
Supply Voltage (Min) (V)	4.5	4.5	4.5	4.5	4.5
Supply Voltage (Max) (V)	5.5	5.5	5.5	5.5	5.5
Pin/Package	32QFN	32QFN	32QFN	32QFN	32QFN
Approx. Price (US$)	0.99 \| 1ku	0.99 \| 1ku	0.99 \| 1ku	0.99 \| 1ku	0.99 \| 1ku

TPA6045A4C 特性

MicrosoftWindows Vista Compliant
Fully Differential Architecture and High PSRR Provide Excellent RF Rectification Immunity
2.1-W, 1% THD+N Into 4-Ω Speakers and 85-mW, 1% THD+N Into 16-Ω Headphones From 5-V Supply
DirectPath Headphone Amplifier Eliminates Output Capacitors(1)
Internal 4-Step Speaker Gain Control: 10, 12, 15.6, 21.6 dB and Fixed -1.5-V/V Headphone
3.3-V Low Dropout Regulator for CODEC
Independent Shutdown Controls for Speaker, Headphone Amplifier, and Low Dropout Regulator (LDO)
Output Short-Circuit and Thermal Protection
APPLICATIONS
- Notebook Computers
- Portable DVD

TPA6045A4C 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
TPA6045A4CRHBR	ACTIVE	-40 to 85	0.99 \| 1ku	QFN (RHB) \| 32	3000 \| LARGE T&R
TPA6045A4CRHBRG4	ACTIVE	-40 to 85	0.99 \| 1ku	QFN (RHB) \| 32	3000 \| LARGE T&R

TPA6045A4C 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
TPA6045A4CRHBR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	TPA6045A4CRHBR	TPA6045A4CRHBR
TPA6045A4CRHBRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	TPA6045A4CRHBRG4	TPA6045A4CRHBRG4

TPA6045A4C 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
TPA6045A4C 评估模块 (EVM)	TPA6045A4CEVM	开发电路板/EVM