參數(shù)資料
型號(hào): LA4708
元件分類(lèi): 音頻/視頻放大
英文描述: 30 W, 2 CHANNEL, AUDIO AMPLIFIER, SFM18
封裝: SIP-18
文件頁(yè)數(shù): 4/9頁(yè)
文件大小: 144K
代理商: LA4708
LA4708
No. 5245-4/9
Sample Print Pattern
+
C5
C6
C7
C8
C9
R2
R3
R4
R5
VCC
OUT1
OUT2
GND
C4
C3
C2
C1
R1
IN2
IN1
STB
+
1
D
N
G
E
R
P
Copper foil area 90
× 105mm2
Description of External Components
C1, C4
Input capacitors
2.2
μF is recommended. fL can be varied by C1, C4 capacitances to adjust the bass range.
C2
Decoupling capacitor
(ripple filter)
C3
Amplifier on time setting
capacitor
Approximately 0.8 second for 33
μF. Since the on time is proportional to this capacitance, it can
be set as desired by varying this capacitance. (Refer to the characteristics curve.)
C5
Power supply capacitor
C6, C7, C8, C9
Oscillation blocking capacitors
Use polyester film capacitors (Mylar capacitors) with good temperature characteristics. (R2, R3,
R4, and R5 used jointly.) Since stability may be affected slightly by the pattern layout, etc.,
0.1
μF or more is recommended.
R1
Standby switch current
limiting resistor
10k
Ω is recommended (when the applied voltage for the standby switch is 2.5V to 13.2V). This
resistor cannot be removed.
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