參數(shù)資料
型號: LM4871N
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 音頻/視頻放大
英文描述: 1.1W Audio Power Amplifier with Shutdown Mode
中文描述: 1.5 W, 1 CHANNEL, AUDIO AMPLIFIER, PDIP8
封裝: DIP-8
文件頁數(shù): 3/8頁
文件大?。?/td> 243K
代理商: LM4871N
External Components Description
(Figure 1)
Components
1.
Functional Description
R
i
Inverting input resistance which sets the closed-loop gain in conjunction with R
f
. This resistor also forms a
high pass filter with C
i
at f
C
= 1/(2
π
R
i
C
i
).
Input coupling capacitor which blocks the DC voltage at the amplifiers input terminals. Also creates a
highpass filter with R
i
at f
c
= 1/(2
π
R
i
C
i
). Refer to the section,
Proper Selection of External Components
,
for an explanation of how to determine the value of C
i
.
Feedback resistance which sets the closed-loop gain in conjunction with R
i
.
Supply bypass capacitor which provides power supply filtering. Refer to the
Power Supply Bypassing
section for information concerning proper placement and selection of the supply bypass capacitor.
Bypass pin capacitor which 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
3.
4.
R
f
C
S
5.
C
B
Typical Performance Characteristics
THD+N vs Frequency
DS100008-3
THD+N vs Frequency
DS100008-4
THD+N vs Frequency
DS100008-5
THD+N vs Output Power
DS100008-6
THD+N vs Output Power
DS100008-7
THD+N vs Output Power
DS100008-8
Output Power vs
Supply Voltage
DS100008-9
Output Power vs
Supply Voltage
DS100008-10
Output Power vs
Supply Voltage
DS100008-11
L
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