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LM4550BVH/NOPB

更新时间： 2024-02-03 05:46:18
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
43页 1184K
描述
LM4550B AC 97 Rev 2.1 Multi-Channel Audio Codec With Stereo Headphone Amplifier, Sample Rate Conversion and TI 3D Sou

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中文翻译

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LM4550BVH/NOPB 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：QFP
包装说明：LFQFP, QFP48,.35SQ,20针数：48
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：0.59
其他特性：ALSO REQUIRES 3V TO 5.5V SUPPLY商用集成电路类型：CONSUMER CIRCUIT
JESD-30 代码：S-PQFP-G48JESD-609代码：e3
长度：7 mm湿度敏感等级：3
功能数量：1端子数量：48
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：LFQFP
封装等效代码：QFP48,.35SQ,20封装形状：SQUARE
封装形式：FLATPACK, LOW PROFILE, FINE PITCH峰值回流温度（摄氏度）：260
电源：3.3/5,5 V认证状态：Not Qualified
座面最大高度：1.6 mm子类别：Other Consumer ICs
最大供电电压 (Vsup)：5.5 V最小供电电压 (Vsup)：4.2 V
表面贴装：YES温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：0.5 mm端子位置：QUAD
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：7 mm
Base Number Matches：1

LM4550BVH/NOPB 数据手册

 浏览型号LM4550BVH/NOPB的Datasheet PDF文件第2页浏览型号LM4550BVH/NOPB的Datasheet PDF文件第3页浏览型号LM4550BVH/NOPB的Datasheet PDF文件第4页浏览型号LM4550BVH/NOPB的Datasheet PDF文件第5页浏览型号LM4550BVH/NOPB的Datasheet PDF文件第6页浏览型号LM4550BVH/NOPB的Datasheet PDF文件第7页 
LM4550B  
www.ti.com  
SNAS276F –MAY 2005–REVISED APRIL 2013  
LM4550B AC '97 Rev 2.1 Multi-Channel Audio Codec with Stereo Headphone Amplifier,  
Sample Rate Conversion and TI 3D Sound  
Check for Samples: LM4550B  
1
FEATURES  
DESCRIPTION  
The LM4550B is an audio codec for PC systems  
which is fully PC99 compliant and performs the  
analog intensive functions of the AC '97 Rev 2.1  
architecture. Using 18-bit Sigma-Delta ADCs and  
DACs, the LM4550B provides 90 dB of Dynamic  
Range.  
2
•
AC '97 Rev 2.1 Compliant  
•
High Quality Sample Rate Conversion from 4  
kHz to 48 kHz in 1 Hz Increments  
•
Supports up to 6 DAC Channel Systems with  
Multiple LM4550Bs or with Other TI LM45xx  
Codecs  
The LM4550B was designed specifically to provide a  
high quality audio path and provide all analog  
functionality in a PC audio system. It features full  
duplex stereo ADCs and DACs and analog mixers  
with access to 4 stereo and 4 mono inputs. Each  
mixer input has separate gain, attenuation and mute  
control and the mixers drive 1 mono and 2 stereo  
outputs, each with attenuation and mute control. The  
LM4550B provides a stereo headphone amplifier as  
one of its stereo outputs and also supports Texas  
Instruments' 3D Sound stereo enhancement and a  
comprehensive sample rate conversion capability.  
The sample rate for the ADCs and DACs can be  
programmed separately with a resolution of 1 Hz to  
convert any rate in the range 4 kHz – 48 kHz. Sample  
timing from the ADCs and sample request timing for  
the DACs are completely deterministic to ease task  
scheduling and application software development.  
These features together with an extended  
temperature range also make the LM4550B suitable  
for non-PC codec applications.  
•
Unique TI Chaining Function Shares a Single  
Controller SDATA_IN Pin Among Multiple  
Codecs  
•
•
Stereo Headphone Amp with Separate Gain  
Control  
Texas Instruments' 3D Sound Stereo  
Enhancement Circuitry  
•
•
Advanced Power Management Support  
External Amplifier Power Down (EAPD)  
Control  
•
PC Beep Passthrough to Line Out During  
Initialization or Cold Reset  
•
•
Digital 3.3V and 5V Supply Options  
Extended Temperature: −40°C ≤ TA ≤ 85°C  
APPLICATIONS  
•
•
•
•
Desktop PC Audio Systems on PCI Cards,  
AMR Cards, or with Motherboard Chips Sets  
Featuring AC Link  
The LM4550B features the ability to connect several  
codecs together in a system to provide up to 6  
simultaneous channels of streaming data on Output  
Frames (Controller to Codec) for surround sound  
applications. Such systems can also support up to 8  
simultaneous channels of streaming data on Input  
Frames (Codec to Controller). Multiple codec systems  
can be built either using the standard AC Link  
configuration (i.e. of one serial data signal to the  
Controller per codec) or using a unique Texas  
Instruments feature for chaining codecs together.  
This chain feature shares only a single data signal to  
the controller among multiple codecs.  
Portable PC Systems as on MDC Cards, or  
with a Chipset or Accelerator Featuring AC  
Link  
General Audio Frequency Systems Requiring  
2, 4 or 6 DAC Channels and/or up to 8 ADC  
Channels  
Automotive Telematics  
KEY SPECIFICATIONS  
•
•
•
•
Analog Mixer Dynamic Range, 97dB (Typ)  
DAC Dynamic Range, 89dB (Typ)  
ADC Dynamic Range, 90dB (Typ)  
The AC '97 architecture separates the analog and  
digital functions of the PC audio system allowing both  
for system design flexibility and increased  
performance.  
Headphone Amp THD+N at 50 mW,  
0.02% (typ) into 32Ω  
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 © 2005–2013, Texas Instruments Incorporated  
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中文翻译

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LM4550BVH/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM4550BVHX/NOPB TI

完全替代

 LM4550B AC 97 Rev 2.1 Multi-Channel Audio Codec With Stereo Headphone Amplifier, Sample Ra
LM4550BVHX TI

完全替代

 LM4550B AC 97 Rev 2.1 Multi-Channel Audio Codec

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