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LM49151TL/NOPB PDF预览

LM49151TL/NOPB

更新时间： 2024-01-03 11:11:06
品牌 Logo 应用领域
德州仪器 - TI 放大器商用集成电路音频放大器
页数 文件大小 规格书
35页 687K
描述
具有集成 125mW 耳机放大器和 42mW 耳机放大器的 1.25W 单声道 D 类音频放大器 | YZR | 20 | -40 to 85

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LM49151TL/NOPB 技术参数

是否无铅：不含铅是否Rohs认证：符合
生命周期：Active包装说明：VFBGA, BGA20,4X5,20
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.33.00.01Factory Lead Time：1 week
风险等级：1.02Is Samacsys：N
信道分离：78 dB商用集成电路类型：VOLUME CONTROL CIRCUIT
JESD-30 代码：R-XBGA-B20JESD-609代码：e1
长度：2.5 mm湿度敏感等级：1
信道数量：1功能数量：3
端子数量：20最高工作温度：85 °C
最低工作温度：-40 °C标称输出功率：1.25 W
封装主体材料：UNSPECIFIED封装代码：VFBGA
封装等效代码：BGA20,4X5,20封装形状：RECTANGULAR
封装形式：GRID ARRAY, VERY THIN PROFILE, FINE PITCH峰值回流温度（摄氏度）：260
电源：3.3/5 V认证状态：Not Qualified
座面最大高度：0.675 mm子类别：Audio/Video Amplifiers
最大压摆率：10.5 mA最大供电电压 (Vsup)：5.5 V
最小供电电压 (Vsup)：1.7 V表面贴装：YES
温度等级：INDUSTRIAL端子面层：Tin/Silver/Copper (Sn/Ag/Cu)
端子形式：BALL端子节距：0.5 mm
端子位置：BOTTOM处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：2.3 mmBase Number Matches：1

LM49151TL/NOPB 数据手册

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TI Confidential - NDA Restrictions  
LM49151  
www.ti.com  
SNAS482F –MARCH 2009–REVISED MARCH 2013  
LM49151 Boomer™ Audio Power Amplifier Series Mono Class D Audio Subsystem with  
Earpiece Driver, Ground Referenced Headphone Amplifiers, Speaker Protection and No  
Clip with Clip Control  
Check for Samples: LM49151  
1
FEATURES  
DESCRIPTION  
•
E2S Class D Amplifier  
The LM49151 is a fully integrated audio subsystem  
designed for portable handheld applications such as  
cellular phones. The LM49151 combines a 1.25W  
mono E2S class D amplifier, 125mW Class AB  
earpiece driver, 42mW/channel stereo ground  
referenced headphone drivers, volume control, input  
mixer/multiplexer, and speaker protection into a  
single device.  
23  
•
Ground Referenced Outputs — Eliminates  
Output Coupling Capacitors  
I2C Programmable No Clip Function with Clip  
Control  
•
•
•
•
•
•
•
•
Voltage Limiter Speaker Protection  
I2C Volume and Mode Control  
Ear Piece Amplifier  
The LM49151 class D speaker amplifier features  
Texas Instruments' unique Automatic Level Control  
(ALC) that provides both a I2C programmable no-clip  
feature with Clip Controls and speaker protection.  
The E2S (Enhanced Emission Suppression) class D  
amplifier features a patented, ultra low EMI PWM  
architecture that significantly reduces RF emissions  
while preserving audio quality and efficiency while  
delivering 1.25W into an 8Ω load with <1% THD+N  
with a 5V supply. The 42mW/channel headphone  
drivers feature Texas Instruments' ground referenced  
architecture that creates a ground-referenced output  
from a single supply, eliminating the need for bulky  
and expensive DC-blocking capacitors, saving space  
and minimizing system cost.  
Advanced Click-and-Pop Suppression  
Low Supply Current  
Micro-Power Shutdown  
20-bump DSBGA Package  
APPLICATIONS  
•
•
•
•
•
Mobile Phones  
PDAs  
Notebook PCs  
Portable Electronics Devices  
MP3 Players  
The LM49151 features separate volume controls for  
the loudspeaker and headphone inputs. Mode  
selection, shutdown control, and volume are  
controlled through an I2C compatible interface. The  
LM49151's superior click and pop suppression  
eliminates audible transients on power-up/down and  
during shutdown.  
KEY SPECIFICATIONS  
•
•
•
Output Power at VDD = 3.3V THD+N ≤ 1%  
–
–
LS Mode, RL = 8Ω 520mW (Typ)  
HP Mode, RL = 32Ω 40mW (Typ)  
Output Power at VDD = 5V THD+N ≤ 1%  
–
–
LS Mode, RL = 8Ω 1.25W (Typ)  
HP Mode, RL = 32Ω 42mW (Typ)  
Output Offset  
–
–
LS Mode 15 6mV (Typ)  
HP Mode 15 2mV (Typ)  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
3
Boomer is a trademark of Texas Instruments.  
All other trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2009–2013, Texas Instruments Incorporated  
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