TPA2051D3 具有 SmartGain™ 单声道 D 类放大器和 DirectPath™ 耳机放大器的 2.9W 3 输入音频子系统

The TPA2051D3 is an audio subsystem with a mono Class-D power amplifier, a stereo DirectPath headphone amplifier, and bypass switches. The DirectPath headphone amplifier eliminates the need for external dc-blocking output capacitors. The built-in charge pump creates a negative supply voltage for the headphone amplifier, allowing a 0 V dc bias at the output. The DirectPath headphone amplifier drives 25 mW into 16 speakers from a 4.2 V supply.

The subsystem includes three inputs: A differential mono input and two stereo single-ended (SE) inputs. The stereo inputs are also configurable as differential mono inputs. Each input channel has an independent volume control. Seven operating modes provide input-to-output combinations and shutdown control

	TPA2050D4	TPA2051D3	TPA2054D4A
Speaker Channels	Stereo	Mono	Stereo
Speaker Output Power/Ch (W)	1.4	2.9	2.4
Speaker Min Load (Ohms)	8	4	4
Speaker PSRR (dB)	77.7	75	77.7
Headphone Channels	Stereo	Stereo	Stereo
Ground Centered Headphone	Yes	Yes	Yes
Headphone Output Power/Ch (mW)	145	25	145
Headphone Min Load (Ohms)	16	16	16
Headphone PSRR (dB)	78.5	80	78.5
No. of Inputs	2 SE Stereo, 1 Diff Stereo	1 Diff Mono, 2 SE Stereo	2 SE Stereo, 1 Diff Mono
Audio Mode Control	I2C	I2C	I2C
Supply Voltage (Min) (V)	2.5	2.5	2.5
Supply Voltage (Max) (V)	5.5	5.5	5.5
Pin/Package	25DSBGA	25DSBGA	25DSBGA
Approx. Price (US$)	1.10 \| 1ku	0.75 \| 1ku	1.20 \| 1ku

TPA2051D3 特性

Mono Class-D Amp: 730 mW into 8 from 3.6 V Supply (1% THD)
Class-D Bypass Switches
DirectPath Stereo Headphone Amplifier
- No Output Capacitors Required
SpeakerGuard Automatic Gain Control (AGC)
One Differential Mono and Two Stereo Single-Ended Inputs
3:1 Input MUX with Mode Control
32-Step Volume Control for Both Input Channels
Independent Volume Controls for All Inputs
Independent Shutdown for Headphone and Class-D Amplifiers
I2C Interface
Short-Circuit and Thermal-Overload Protection
Operates from 2.5 V to 5.5 V
25-Ball 2,16 mm × 2,11 mm, 0,4 mm pitch WCSP
APPLICATIONS
- Smart Phones / Cellular Phones
- Portable Media Players
- Portable Gaming
- Multimedia Platforms

TPA2051D3 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
TPA2051D3YFFR	ACTIVE	-40 to 85	0.75 \| 1ku	DSBGA (YZK) \| 25	3000 \| LARGE T&R
TPA2051D3YFFT	ACTIVE	-40 to 85	0.90 \| 1ku	DSBGA (YZK) \| 25	250 \| SMALL T&R

TPA2051D3 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
TPA2051D3YFFR	Green (RoHS & no Sb/Br)	SNAGCU	Level-1-260C-UNLIM	TPA2051D3YFFR	TPA2051D3YFFR
TPA2051D3YFFT	Green (RoHS & no Sb/Br)	SNAGCU	Level-1-260C-UNLIM	TPA2051D3YFFT	TPA2051D3YFFT

TPA2051D3 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
TPA2051D3YFF 评估模块	TPA2051D3YFFEVM	开发电路板/EVM