5秒后页面跳转
捷配首页

Datasheet > 消费电路 > 其他商用集成电路> LM4549MDC
LM4549MDC PDF预览

LM4549MDC

更新时间： 2024-02-22 00:03:52
品牌 Logo 应用领域
美国国家半导体 - NSC 解码器编解码器
页数 文件大小 规格书
18页 327K
描述
IC,SOUNDCARD CIRCUITS,DIE

阅读下载

中文翻译

获取价格

LM4549MDC 技术参数

是否Rohs认证：不符合生命周期：Obsolete
包装说明：LFQFP, QFP48,.35SQ,20Reach Compliance Code：unknown
HTS代码：8542.39.00.01风险等级：5.57
Is Samacsys：N其他特性：IT ALSO REQUIRES 3V TO 5.5V DIGITAL 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
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）：NOT SPECIFIED
电源：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技术：CMOS
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：NOT SPECIFIED
宽度：7 mmBase Number Matches：1

LM4549MDC 数据手册

 浏览型号LM4549MDC的Datasheet PDF文件第2页浏览型号LM4549MDC的Datasheet PDF文件第3页浏览型号LM4549MDC的Datasheet PDF文件第4页浏览型号LM4549MDC的Datasheet PDF文件第5页浏览型号LM4549MDC的Datasheet PDF文件第6页浏览型号LM4549MDC的Datasheet PDF文件第7页 
February 1999  
LM4549  
AC ’97 Rev 2.1 Codec with Sample Rate Conversion and  
National 3D Sound  
General Description  
Key Specifications  
The LM4549 is an audio codec for PC systems which is fully  
PC98 compliant and performs the analog intensive functions  
of the AC97 Rev2.1 architecture. Using 18-bit Sigma-Delta  
A/D’s and D/A’s, the LM4549 provides 90dB of Dynamic  
Range.  
n Analog Mixer Dynamic Range  
n D/A Dynamic Range  
97dB (typ)  
89dB (typ)  
90dB (typ)  
n A/D Dynamic Range  
The LM4549 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 A/D’s and D/A’s  
and an analog mixer with 4 stereo and 3 mono inputs, each  
of which has separate gain, attenuation and mute control.  
The codec features a second Line Output known as True  
Line Level Out that is identical to Line Out but with indepen-  
dent volume control. The LM4549 also features National’s  
3D Sound stereo enhancement and variable sample rate  
conversion. The sample rate for the A/D and D/A can be pro-  
grammed separately with a resolution of 1Hz to convert any  
rate between 4kHz-48kHz.  
Features  
n AC’97 Rev 2.1 compliant  
n National’s 3D Sound circuitry  
n High quality Sample Rate Conversion (SRC) from 4kHz  
to 48kHz in 1Hz increments.  
n Multiple Codec Support  
n External Amplifier Power Down (EAPD) control from  
codec  
n PC-Beep passthrough to Line Out while reset is held  
active low  
The AC97 architecture separates the analog and digital func-  
tions of the PC audio system allowing both for system design  
flexibility and increased performance.  
n True Line Level Output with volume control independent  
of Line Out  
n Digital 3V and 5V compliant  
Applications  
n Desktop PC Audio Systems on PCI cards, AMR cards,  
or with motherboard chips sets featuring AC-Link  
n Portable PC Systems as on MDC cards, or with a  
chipset or accelerator featuring AC-Link  
Block Diagram  
DS101035-1  
FIGURE 1. LM4549 Block Diagram  
© 1999 National Semiconductor Corporation  
DS101035  
www.national.com  
1234567...18

中文翻译

下载PDF

与LM4549MDC相关器件

型号 品牌 获取价格 描述 数据表
LM4549MWC NSC

获取价格

 		IC,SOUNDCARD CIRCUITS,WAFER
LM4549VH NSC

获取价格

 		AC ’97 Rev 2.1 Codec with Sample Rate Convers
LM4550 NSC

获取价格

 		AC ’97 Rev 2.1 Multi-Channel Audio Codec with
LM4550B NSC

获取价格

 		AC 97 Rev 2.1 Multi-Channel Audio Codec with Stereo Headphone Amplifier, Sample Rate Conve
LM4550B TI

获取价格

 		LM4550B AC 97 Rev 2.1 Multi-Channel Audio Codec
LM4550BVH TI

获取价格

 		LM4550B AC 97 Rev 2.1 Multi-Channel Audio Codec
LM4550BVH NSC

获取价格

 		AC 97 Rev 2.1 Multi-Channel Audio Codec with Stereo Headphone Amplifier, Sample Rate Conve
LM4550BVH/NOPB NSC

获取价格

 		IC SPECIALTY CONSUMER CIRCUIT, PQFP48, 7 X 7 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, LQFP-48,
LM4550BVH/NOPB TI

获取价格

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

获取价格

 		LM4550B AC 97 Rev 2.1 Multi-Channel Audio Codec

与LM4549MDC相关文章

您还可以找


热门产品
PCB打样/小批量
铝基板
BOM智能配单
PCBA制造
钣金
精密CNC
模具注塑
薄膜开关
精选活动
PCBA打样特惠
四六层板品质升级
铝基板品质升级
一体化电子制造
DFM下载
服务支持
企业认证
产品展示
工厂展示
工艺能力
积分商城
关于捷配
捷配简介
企业文化
公司动态
人才招聘
联系我们
帮助中心
下单流程
付款流程
开票流程
常见问题
全球PCB制造服务专线 400-613-0088

工作时间：9:00-21:00

CEO邮箱：ceo@jiepei.com

投诉邮箱：tousu@jiepei.com

捷配网-微信公众号 微信公众号
捷配网-微信公众号 抖音公众号
资质认证：
合作快递：
支付方式：
Copyright © 2024 Jiepei.com Inc. All Rights Reserved. 版权所有:杭州捷配信息科技有限公司 浙公网安备 33010502006866号 浙ICP备10014259号-119 营业执照ICP证