參數(shù)資料
型號(hào)： LDC08A
廠商： National Semiconductor Corporation
英文描述： 3W Audio Power Amplifier with Shutdown Mode
中文描述： 3W音頻功率放大器關(guān)斷模式
文件頁(yè)數(shù)： 5/15頁(yè)
文件大?。?/td> 543K
代理商： LDC08A
External Components Description
(
Figure 1
)
Components
1.
Functional Description
R
i
Inverting input resistance that 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 that 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 that sets the closed-loop gain in conjunction with R
i
.
Supply bypass capacitor that 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 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
3.
4.
R
f
C
S
5.
C
B
Typical Performance Characteristics
LD and MH Specific Characteristics
THD+N vs Frequency
V
DD
= 5V, R
L
= 4
, and P
O
= 1W
THD+N vs Output Power
V
DD
= 5V, R
L
= 4
, and f = 1 kHz
20074041
20074042
Typical Performance Characteristics
THD+N vs Frequency
V
DD
= 5V, R
L
= 8
, and P
O
= 500mW
THD+N vs Frequency
V
DD
= 3V, R
L
= 4
, and P
O
= 500mW
20074043
20074044
L
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