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參數(shù)資料
| 型號(hào)： | KA2220 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | Equalizer AMP with ALC(帶ALC電路的均衡放大器) |
| 中文描述： | 均衡器，放大器和ALC的（帶ALC的電路的均衡放大器） |
| 文件頁(yè)數(shù)： | 4/6頁(yè) |
| 文件大小： | 111K |
| 代理商： | KA2220 |
KA2220 EQUALIZER AMP WITH ALC
APPLICATION
ALC Grade Binning Table
INFORMATION
A
V
(dB)
ALC Grade (dB)
Min
Max
Min
- 16.0
- 25.0
Max
- 27.0
- 34.0
KA2220 J
KA2220 M
34
36
External Components (Refer to test circuits)
C
1
: Input coupling capacitor
The recommended value is 10
￥ì
F. If made too small the low frequency characteristics will change for the worse, and
too large a capacitance value will increase the rising time when power is applied.
C
2
: Bypass capacitor
Short emitter resistor on the AC and prevents an AC signal from feedback to input.
C
3
: R
1
, R
2
: Equalizer network
The closed loop voltage gain is determined by these components in relation to the internal resistance at Pin 3.
C
4
:
C
2
is determined as follows:
1
2
π
f
R
Output coupling capacitor
C
4
=
f
L
: low cut-off frequency
R
L
: load resistance
C
5
: Phase compensation capacitor.
Prevents high frequency oscillation by phase error when feedback is heavy.
C
6
: Ripple filter for power supply
A large value is required to get an excellent ripple characteristic under the line operation, but must be made smaller
to shorten the starting time.
R
3
: Filter resistance.
R
: Collector resistor of first stage transistor of the IC
Low voltage characteristic can be improved by adjusting this resistance.
Symbol
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| KA22211 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:DUAL LOW NOISE EQ AMP |
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