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參數(shù)資料
| 型號： | LM4548AVH/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP48 |
| 封裝： | 7 X 7 MM, 1.40 MM HEIGHT, LQFP-48 |
| 文件頁數(shù)： | 26/28頁 |
| 文件大小： | 538K |
| 代理商： | LM4548AVH/NOPB |
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Typical Application
APPLICATION HINTS
The LM4548A must be initialized by using RESET# to perform a Power On Reset as shown in the Power On Reset Timing
Diagram
V
REF must be pulled high to AVDD witha10k
resistor to ensure correct operation
Don’t leave unused inputs floating. Tie all unused inputs together and connect to Analog Ground through a capacitor (e.g. 0.1
F)
Do not leave CD_GND floating when using the CD stereo input. CD_GND is the AC signal reference for the CD channels and
should be connected to the CD source ground (Analog Ground may also be acceptable) througha1F capacitor
If using a non-standard AC Link controller take care to keep the SYNC and SDATA_IN signals low during Cold Reset to avoid
entering the ATE or Vendor test modes by mistake
The PC_Beep input should be explicitly muted if not used since it defaults to 0 dB gain on reset, unlike the mute default of the
other analog inputs.
20030003
FIGURE 1. LM4548A Typical Application Circuit, Single Codec, 1 Vrms inputs
LM4548A
www.national.com
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LM4548AVHX | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| LM4548VH | 制造商:Texas Instruments 功能描述: |
| LM4549 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:AC ’97 Rev 2.1 Codec with Sample Rate Conversion and National 3D Sound |
| LM4549A | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:AC ’97 Rev 2.1 Codec with Sample Rate Conversion and National 3D Sound |
| LM4549AVH | 制造商:Rochester Electronics LLC 功能描述:AC97 REV2.1 CODEC - Bulk 制造商:OC White Company 功能描述:Audio Codec 2ADC / 2DAC 18-Bit 48-Pin LQFP Tray |
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