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LM4947TLX/NOPB PDF预览

LM4947TLX/NOPB

更新时间： 2024-11-25 14:52:31
品牌 Logo 应用领域
德州仪器 - TI 商用集成电路
页数 文件大小 规格书
36页 1407K
描述
VOLUME CONTROL CIRCUIT

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中文翻译

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LM4947TLX/NOPB 技术参数

是否无铅：不含铅是否Rohs认证：符合
生命周期：ObsoleteReach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.33.00.01
Factory Lead Time：1 week风险等级：5.44
Is Samacsys：N商用集成电路类型：VOLUME CONTROL CIRCUIT
JESD-30 代码：S-PBGA-B25JESD-609代码：e1
湿度敏感等级：1功能数量：2
端子数量：25最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：FBGA封装等效代码：BGA25,5X5,20
封装形状：SQUARE封装形式：GRID ARRAY, FINE PITCH
峰值回流温度（摄氏度）：260电源：3.3/5 V
认证状态：Not Qualified子类别：Audio/Video Amplifiers
最大压摆率：8 mA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
Base Number Matches：1

LM4947TLX/NOPB 数据手册

 浏览型号LM4947TLX/NOPB的Datasheet PDF文件第2页浏览型号LM4947TLX/NOPB的Datasheet PDF文件第3页浏览型号LM4947TLX/NOPB的Datasheet PDF文件第4页浏览型号LM4947TLX/NOPB的Datasheet PDF文件第5页浏览型号LM4947TLX/NOPB的Datasheet PDF文件第6页浏览型号LM4947TLX/NOPB的Datasheet PDF文件第7页 
LM4947, LM4947TLEVAL  
www.ti.com  
SNAS349D –JUNE 2006–REVISED MAY 2013  
LM4947  
Mono Class D and Stereo Audio Sub-System  
with OCL Headphone Amplifier and TI 3D  
Check for Samples: LM4947, LM4947TLEVAL  
1
FEATURES  
DESCRIPTION  
The LM4947 is an audio subsystem capable of  
•
I2C Control Interface  
2
efficiently delivering 500mW (Class D operation) of  
continuous average power into a mono 8Ω bridged-  
tied load (BTL) with 1% THD+N, 37mW (Class AB  
operation) power channel of continuous average  
power into stereo 32Ω single-ended (SE) loads with  
1% THD+N, or an output capacitor-less (OCL)  
configuration with identical specification as the SE  
configuration, from a 3.3V power supply.  
•
I2C Programmable Texas Instruments 3D  
Audio  
I2C Controlled 32 Step Digital Volume Control  
(-59.5dB to +18dB)  
•
•
Three Independent Volume Channels (Left,  
Right, Mono)  
•
•
•
•
•
•
•
•
Eight Distinct Output Modes  
Small, 25–Bump DSBGA Packaging  
“Click and Pop” Suppression Circuitry  
Thermal Shutdown Protection  
Low Shutdown Current (0.1μA, typ)  
RF Suppression  
The LM4947 has six input channels: one pair for a  
two-channel stereo signal, the second pair for a  
secondary two-channel stereo input, and the third pair  
for  
Additionally, the two sets of stereo inputs may be  
configured as single stereo differential input  
a
differential single-channel mono input.  
a
(differential left and differential right). The LM4947  
features a 32-step digital volume control and eight  
distinct output modes. The digital volume control, 3D  
enhancement, and output modes are programmed  
through a two-wire I2C compatible interface that  
allows flexibility in routing and mixing audio channels.  
Differential Mono and Stereo Inputs  
Stereo Input Mux  
KEY SPECIFICATIONS  
•
THD+N at 1kHz, 500mW into 8Ω BTL (3.3V):  
1.0% (typ)  
The RF suppression circuitry in the LM4947 makes it  
well-suited for GSM mobile phones and other  
portable applications in which strong RF signals  
generated by an antenna (and long output traces)  
may couple audibly into the amplifier.  
•
THD+N at 1kHz, 37mW into 32Ω SE (3.3V):  
1.0% (typ)  
•
•
Single Supply Operation (VDD): 2.7 to 5.5 V  
I2C Single Supply Operation: 2.2 to 5.5 V  
The LM4947 is designed for cellular phones, PDAs,  
and other portable handheld applications. It delivers  
high quality output power from a surface-mount  
package and requires only eight external components  
in the OCL mode (two additional components in SE  
mode).  
APPLICATIONS  
•
•
Mobile Phones  
PDAs  
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
All 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 © 2006–2013, Texas Instruments Incorporated  
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LM4947TLX/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
MAX9877AERP+ MAXIM

类似代替

 Volume Control Circuit,
LM4947TL/NOPB TI

功能相似

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功能相似

 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

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