參數(shù)資料
型號(hào): LM4540VH
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 消費(fèi)家電
英文描述: AC ’97 Codec with National 3D Sound
中文描述: SPECIALTY CONSUMER CIRCUIT, PQFP48
封裝: 7 X 7 MM, 1.40 MM HEIGHT, TQFP-48
文件頁(yè)數(shù): 7/16頁(yè)
文件大小: 298K
代理商: LM4540VH
Connection Diagram
Pin Description
Analog I/O
Name
Pin
I / O
Functional Description
This is a mono input which gets summed into the stereo line output after the National 3D
Sound block. The PC_BEEP level can be adjusted from 0dB to 45dB in 3dB steps, or
muted, via register 0Ah.
This is a mono input which gets summed into the stereo line output after the National 3D
Sound block. The PHONE level can be adjusted from +12dB to 34.5dB in 1.5dB steps as
well as muted via register 0Ch.
This line level input can be routed through the Input Mux and recorded by the left ADC. In
addition, this analog input gets summed into the left output stream. The amount of CD_L
signal mixed in the left output stream can be adjusted from +12dB to 34.5dB in 1.5dB steps
as well as muted via register 12h.
This input can be used to reject common mode signals on the CD_L or CD_R inputs.
CD_GND is an AC ground point not a DC ground point. This input must be AC-coupled to
the CD input signal’s ground.
PC_BEEP
12
I
PHONE
13
I
CD_L
18
I
CD_GND
19
I
DS100906-2
Top View
Order Number LM4540VH
See NS Package Number VBH48A
www.national.com
7
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LM4545VH 功能描述:IC AUDIO CODEC '97 18BIT 48LQFP RoHS:否 類別:集成電路 (IC) >> 接口 - 編解碼器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:立體聲音頻 數(shù)據(jù)接口:串行 分辨率(位):18 b ADC / DAC 數(shù)量:2 / 2 三角積分調(diào)變:是 S/N 比,標(biāo)準(zhǔn) ADC / DAC (db):81.5 / 88 動(dòng)態(tài)范圍,標(biāo)準(zhǔn) ADC / DAC (db):82 / 87.5 電壓 - 電源,模擬:2.6 V ~ 3.3 V 電壓 - 電源,數(shù)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(yīng)商設(shè)備封裝:48-TQFN-EP(7x7) 包裝:帶卷 (TR)