參數(shù)資料
型號: LM4915LQ/NOPB
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 音頻/視頻放大
英文描述: 0.4 W, 1 CHANNEL, AUDIO AMPLIFIER, QCC8
封裝: LLP-8
文件頁數(shù): 6/11頁
文件大?。?/td> 516K
代理商: LM4915LQ/NOPB
Electrical Characteristics V
DD = 3.0V (Notes 1, 2, 8) (Continued)
Note 9: See ISD distribution values shown in the ISD Distribution curve, VDD =5VandV=3V, shown in the Typical Performance Characteristics section.
External Components Description (Figure 1)
Components
Functional Description
1.
C
B
Bypass pin capacitor that provides half-supply filtering. Refer to the section Proper Selection of External
Components for information concerning proper placement and selection of C
B.
2.
C
i
Input coupling capacitor which blocks the DC voltage at the amplifier’s input terminals. Also creates a
high-pass filter with the internal input resistance R
i. For the LM4915, Ri = 20k
, thus creating a high-pass
filter f
c = 1/(2
πR
iCi). Refer to the section Proper Selection of External Components for an explanantion of
how to determine the value of C
i.
Typical Performance Characteristics
THD+N vs Frequency
V
DD = 5V, RL =16
THD+N vs Frequency
V
DD = 5V, RL =32
200482C6
200482C7
THD+N vs Frequency
V
DD = 3V, RL =16
,P
O = 100mW
THD+N vs Frequency
V
DD = 3V, RL =32
,P
O = 80mW
200482C4
200482C5
LM4915
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