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參數(shù)資料
| 型號(hào)： | STK4024V |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | AF Power Amplifier (Split Power Supply) (20 W min, THD = 0.08%) |
| 中文描述： | 自動(dòng)對(duì)焦功率放大器（斯普利特電源）（20瓦分鐘，總諧波失真\u003d 0.08％） |
| 文件頁(yè)數(shù)： | 4/5頁(yè) |
| 文件大小： | 328K |
| 代理商： | STK4024V |
STK4024V
No. 4388-4/5
Description of External Parts
R
1
, C
1
: Input filter circuit
Reduces high-frequency noise.
C
2
: Input coupling capacitor
DC current suppression. A reduction in reactance is effective because of increases in capacitor
reactance at low frequencies and 1/f noise dependence on signal source resistance which result in
output noise worsening.
R
2
: Input bias resistor
Biases the input pin to zero.
Effects V
N
stability (refer to NF circuit).
Due to differential input, input resistance is more or less determined by this resistance value.
R
4
, R
5
: NFB circuit (AC NF circuit). Use of resistor with 1% error is suggested.
C
3
(R
2
)
VG settings are obtained using R
4
and R
5
according to the following equation:
log20·R
5
40 dB is recommended.
4
Low-frequency cutoff frequency settings are obtained using R
4
and C
3
according to the following
equation:
1
[Hz]
2
π
·R
4
·C
3
When changing the VG setting, you should change R
4
which requires a recheck of the low cutoff
frequency setting. When the VG setting is changed using R
5
, the setting should ensure R
2
equals R
5
so
that V
N
balance stability is maintained. If the resistor value is increased more than the existing value,
V
N
balance may be disturbed and result in deterioration of V
N
temperature characteristics.
: Differential constant-current bias resistor
: For oscillation suppression and phase compensation applications
(For use with differential stage applications)
: For oscillation suppression and phase compensation applications
(A Mylar capacitor is recommended for C
4
for use with output stage applications)
: For oscillation suppression and phase compensation applications
Power stage (Must be connected near the pin)
: For oscillation suppression and phase compensation applications
(Oscillation suppression before power step clip)
: For oscillation suppression and distortion improvement applications
: Ripple filter circuit on positive (+) side.
: Ripple filter circuit on negative (–) side.
C
11
, C
12
: For oscillation suppression applications
Used for reducing power supply impedance to stable IC operation and should be connected near the IC
pin. We recommend that you use an electrolytic capacitor.
f
L
=
R
3
R
6
, R
7
R
7
, C
4
C
6
, C
9
C
6
: Positive (+) power
C
9
: Negative (–) power
C
8
C
5
R
8
, C
10
R
9
, C
13
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