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LM4549BVH

更新时间： 2024-01-02 12:59:51
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
39页 1253K
描述
SPECIALTY CONSUMER CIRCUIT, PQFP48, 7 X 7 MM, 1.40 MM HEIGHT, LQFP-48

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LM4549BVH 技术参数

是否Rohs认证： 不符合生命周期：Transferred
包装说明：7 X 7 MM, 1.40 MM HEIGHT, LQFP-48Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.01其他特性：IT ALSO REQUIRES 3V TO 5.5V SUPPLY
商用集成电路类型：CONSUMER CIRCUITJESD-30 代码：S-PQFP-G48
JESD-609代码：e0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 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：Tin/Lead (Sn/Pb)
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：40
宽度：7 mmBase Number Matches：1

LM4549BVH 数据手册

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LM4549B  
www.ti.com  
SNAS598A –JULY 2012–REVISED MAY 2013  
LM4549B AC '97 Rev 2.1 Multi-Channel Audio Codec with Sample Rate Conversion and TI  
3D Sound  
Check for Samples: LM4549B  
1
FEATURES  
DESCRIPTION  
The LM4549B 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 LM4549B 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  
•
•
Multiple Codec Support  
True Line Level Output with Separate Gain  
Control  
The LM4549B 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  
LM4549B supports Texas Instrument's 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  
LM4549B suitable for non-PC codec applications.  
•
Texas Instrument's 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  
•
Portable PC Systems as on MDC Cards, or  
with a Chipset or Accelerator Featuring AC  
Link  
The LM4549B features the ability to connect several  
codecs together using the Extended AC Link  
configuration of one dedicated serial data signal to  
the Controller per codec. LM4549B systems support  
up to 8 simultaneous channels of streaming data on  
Input Frames (Codec to Controller) while Output  
Frames (Controller to Codec) carry 2 streams to  
multiple codecs. The LM4549B may also be used in  
systems with the Texas Instruments LM4550B to  
support up to 6 simultaneous channels of streaming  
data on Output Frames.  
•
•
General and Multi-Channel Audio Frequency  
Systems  
Automotive Telematics  
KEY SPECIFICATIONS  
•
•
•
Analog Mixer Dynamic Range: 97 dB (typ)  
DAC Dynamic Range: 89 dB (typ)  
ADC Dynamic Range: 90 dB (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.  
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 © 2012–2013, Texas Instruments Incorporated  
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LM4549BVH 替代型号

型号 品牌 替代类型 描述 数据表
LM4549BVHX/NOPB TI

完全替代

 AC '97 编解码器（2.1 版），具有采样率转换和 National 3D Sound
LM4549BVH/NOPB TI

完全替代

 AC '97 编解码器（2.1 版），具有采样率转换和 National 3D Sound
LM4549BVHX TI

完全替代

 SPECIALTY CONSUMER CIRCUIT, PQFP48, 7 X 7 MM, 1.40 MM HEIGHT, LQFP-48

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