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參數(shù)資料
| 型號： | KA2224B |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | Dual EQ AMP with ALC(帶ALC電路的雙均衡放大器) |
| 中文描述： | 雙放大器和ALC的均衡器（帶ALC的電路的雙均衡放大器） |
| 文件頁數(shù)： | 4/5頁 |
| 文件大小： | 74K |
| 代理商： | KA2224B |
KA2224B
DUAL EQ AMP WITH ALC
APPLICATION INFORMATION
1. Closed Loop Voltage Gain
Fig. 3.
SW on: play
off
:
record
A. Playback amplifier
Gv = 20 log R
V
= 42dB (Typ) Z = R
1
//(R
2
+ 2
F
B. Recording ampilfier
Gv =20 log R
V
= 58dB (Typ)
F
2.
ALC Circuit
Fig. 4
The ALC circuit consists
of TR
, TR
and some external component. The output level of the amplifier is recti-
fied by external circuits. Since this DC level is applied to the ALC input terminal (Pin 7), the impedance between
the collector and emitter of TR
1
can change its value, therefore the pre-amplifier input level can be controlled.
2
4
Z
R
1
51K
R
2
4.7K
C
2
0.033u
C
3
10u
R
L
R
F
56
C1
22u
5
7
6
2
INPUT
R
1
C
1
C
4
R
L
R
2
C
2
D
1
D
2
C
3
R
3
R
4
TR
2
TR
1
AMP
Z
R1
1
￥e
f
C
2
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相關代理商/技術參數(shù) |
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| KA2225 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:DUAL PREAMPLIFIER FOR 3V USING |
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| KA2225-2 | 制造商:ABB Low Voltage Products and Systems 功能描述:KIT FC CUAL A2 225A 2PCS |
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