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參數資料
| 型號： | LM4550VH |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 消費家電 |
| 英文描述： | AC ’97 Rev 2.1 Multi-Channel Audio Codec with Stereo Headphone Amplifier, Sample Rate Conversion and National 3D Sound |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP48 |
| 封裝： | 7 X 7 X 1.40 MM, LQFP-48 |
| 文件頁數： | 12/25頁 |
| 文件大小： | 507K |
| 代理商： | LM4550VH |
Pin Descriptions
(Continued)
POWER SUPPLIES AND REFERENCES
(Continued)
Name
Pin
I / O
Functional Description
AFILT2
30
O
This pin is not used and should be left open (NC). However, a capacitor to ground on this pin
is permitted - it will not affect performance.
These pins are used to complete the National 3D Sound circuit. Connect a 0.022μF capacitor
between pins 3DP and 3DN. The National 3D Sound can be turned on and off via bit D13 in
control register 20h. This is a fixed-depth type stereo enhance circuit, thus writing to register
22h has no effect. If National 3D Sound is not needed, then these pins should be left as no
connect (NC).
3DP, 3DN
33,34
O
Typical Performance Characteristics
ADC Noise Floor
DAC Noise Floor
10097215
10097216
Analog Loopthru
Noise Floor
ADC Frequency
Response
10097218
10097219
L
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相關PDF資料 |
PDF描述 |
|---|---|
| LM4550 | AC ’97 Rev 2.1 Multi-Channel Audio Codec with Stereo Headphone Amplifier, Sample Rate Conversion and National 3D Sound |
| LM4809LD | Dual 105mW Headphone Amplifier with Active-Low Shutdown Mode |
| LM4809 | Dual 105mW Headphone Amplifier with Active-Low Shutdown Mode |
| LM4809MA | Dual 105mW Headphone Amplifier with Active-Low Shutdown Mode |
| LM4809MM | Dual 105mW Headphone Amplifier with Active-Low Shutdown Mode |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LM4550VH WAF | 制造商:Texas Instruments 功能描述: |
| LM4550VH/NOPB | 功能描述:IC AC '97 CODEC 48-LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編解碼器 系列:- 標準包裝:2,500 系列:- 類型:立體聲音頻 數據接口:串行 分辨率（位）:18 b ADC / DAC 數量:2 / 2 三角積分調變:是 S/N 比，標準 ADC / DAC (db):81.5 / 88 動態(tài)范圍，標準 ADC / DAC (db):82 / 87.5 電壓 - 電源，模擬:2.6 V ~ 3.3 V 電壓 - 電源，數字:1.7 V ~ 3.3 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-WFQFN 裸露焊盤 供應商設備封裝:48-TQFN-EP（7x7） 包裝:帶卷 (TR) |
| LM4550VHX | 制造商:Rochester Electronics LLC 功能描述:AC '97 REV 2.1 CODEC - Bulk |
| LM4550VHX/NOPB | 制造商:Texas Instruments 功能描述:Audio Codec 2ADC / 2DAC 18-Bit 48-Pin LQFP T/R |
| LM4558 | 制造商:HTC 制造商全稱:HTC Korea TAEJIN Technology Co. 功能描述:DUAL OPERATIONAL AMPLIFIERS |
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