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参数资料
| 型号： | LM4546MWC |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, UUC |
| 封装： | WAFER |
| 文件页数： | 11/20页 |
| 文件大小： | 356K |
| 代理商： | LM4546MWC |
National P/N LM4546 - AC '97 Rev 2 Codec with Sample Rate Conversion and National 3D Sound
LM4546VHX
N/A
1K+
$2.8400
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LM4546VH
LM4546 MDC
Full production
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LM4546 MWC
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General Description
The LM4546 is an audio codec for PC systems which is fully PC98 compliant and performs the analog
intensive functions of the AC97 Rev 2 architecture. Using 18-bit Sigma-Delta A/D's and D/A's, the LM4546
provides 90dB of Dynamic Range.
The LM4546 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 2
stereo and 3 mono inputs, each of which has separate gain, attenuation and mute control. The LM4546 also
provides National's 3D Sound stereo enhancement.
The LM4546 supports variable sample rate conversion as defined in the AC97 Rev2 specification. The sample
rate for the A/D and D/A can be programmed separately to convert any rate between 4kHz - 48kHz with a
resolution of 1Hz. The AC97 architecture separates the analog and digital functions of the PC audio system
allowing both for system design flexibility and increased performance.
Features
q
AC'97 Rev 2 compliant
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National's 3D Sound circuitry
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High quality Sample Rate Conversion (SRC) from 4kHz to 48kHz in 1Hz increments
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Multiple Codec support
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Advanced power management support
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Digital 3V and 5V compliant
Key Specification
Analog Mixer Dynamic Range 97dB (typ)
D/A Dynamic Range
89dB (typ)
A/D Dynamic Range
90dB (typ)
Applications
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Desktop PC Audio Systems
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Portable PC Systems
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Mobile PC Systems
[Information as of 5-Aug-2002]
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| LM4547VH | SPECIALTY CONSUMER CIRCUIT, PQFP48 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4546VH | 制造商:Texas Instruments 功能描述:SPECIALTY CONSUMER CIRCUIT, PQFP48 |
| LM4547VH | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Soundcard Circuits |
| LM4548 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:AC ’97 Rev 2 Codec with Sample Rate Conversion and National 3D Sound |
| LM4548A | 制造商:NSC 制造商全称:National Semiconductor 功能描述:AC ’97 Rev 2 Multi-Channel Audio Codec with Sample Rate Conversion and National 3D Sound |
| LM4548AVH | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
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