參數(shù)資料
型號(hào)： LM4546AVH/NOPB
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類(lèi)： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP48
封裝： 7 X 7 MM, 1.40 MM HEIGHT, LQFP-48
文件頁(yè)數(shù)： 1/27頁(yè)
文件大?。?/td> 897K
代理商： LM4546AVH/NOPB
LM4546A
AC ’97 Rev 2 Multi-Channel Audio Codec with Sample
Rate Conversion and National 3D Sound
General Description
The LM4546A is an audio codec for PC systems which is
fully PC98 compliant and performs the analog intensive
functions of the AC ’97 Rev 2 architecture. Using 18-bit
Sigma-Delta ADCs and DACs, the LM4546A provides 90 dB
of Dynamic Range.
The LM4546A 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 2 stereo and 2 mono
inputs. Each mixer input has separate gain, attenuation and
mute control and the mixers drive 1 mono and 1 stereo
output, each with attenuation and mute control. The
LM4546A supports National’s 3D Sound stereo enhance-
ment and a comprehensive sample rate conversion capabil-
ity. The sample rate for the ADCs and DACs can be pro-
grammed 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 com-
pletely deterministic to ease task scheduling and application
software development. These features together with an ex-
tended temperature range also make the LM4546A suitable
for non-PC codec applications.
The LM4546A 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.
LM4546A 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 LM4546A may also be used in systems
with the National LM4550 to support up to 6 simultaneous
channels of streaming data on Output Frames.
The AC ’97 architecture separates the analog and digital
functions of the PC audio system allowing both for system
design flexibility and increased performance.
Key Specifications
n
Analog Mixer Dynamic Range
97 dB (typ)
n
DAC Dynamic Range
89 dB (typ)
n
ADC Dynamic Range
90 dB (typ)
Features
n
AC ’97 Rev 2 compliant
n
High quality Sample Rate Conversion from 4 kHz to 48
kHz in 1 Hz increments
n
Multiple codec support
n
National’s 3D Sound stereo enhancement circuitry
n
Advanced power management support
n
Digital 3.3V and 5V supply options
n
Extended Temperature: 40C
≤ T
A
≤ 85C
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
n
General and Multi-channel audio frequency systems
March 2005
LM4546A
AC
’97
Rev
2
Multi-Channel
Audio
Codec
with
Sample
Rate
Conversion
and
National
3D
Sound
2005 National Semiconductor Corporation
DS200308
www.national.com
相關(guān)PDF資料
PDF描述
LM4546VHX SPECIALTY CONSUMER CIRCUIT, PQFP48
LM4546MDC SPECIALTY CONSUMER CIRCUIT, UUC
LM4546MWC SPECIALTY CONSUMER CIRCUIT, UUC
LM4546AVHX/NOPB SPECIALTY CONSUMER CIRCUIT, PQFP48
LM4546VH/NOPB SPECIALTY CONSUMER CIRCUIT, PQFP48
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM4546AVHX 制造商:Rochester Electronics LLC 功能描述:AC97 REV2 CODEC 3D STEREO - Bulk
LM4546B 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:AC ’97 Rev 2 Multi-Channel Audio Codec with Sample Rate Conversion and National 3D Sound
LM4546BVH 功能描述:接口—CODEC RoHS:否 制造商:Texas Instruments 類(lèi)型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類(lèi)型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
LM4546BVH /NOPB 制造商:Texas Instruments 功能描述:Audio Codec 2ADC / 2DAC 18-Bit 48-Pin LQFP Tray
LM4546BVH/NOPB 功能描述:接口—CODEC RoHS:否 制造商:Texas Instruments 類(lèi)型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類(lèi)型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*