CA3154E 查看數據表（PDF） - Harris Semiconductor
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CA3154E Datasheet PDF : 6 Pages
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CA3154
TO 6 TO 7
470Ω
2mH
Q ≈ 10
620pF
±2%
56pF
±2%
TO 8
1kΩ
330pF
±2%
1.8kΩ
NOTE: Oscillator loop to be used as indicated in the electrical characteristics chart, with coil adjusted for typical unit to 503.5kHz for f6FR.
FIGURE 2. ELECTRICAL CHARACTERISTICS TEST CIRCUIT
+12V
V15
V13 POT. DELAY
SETTING
V14
B V13
A
IF AGC
IF MAX GAIN AT IF GAIN RED.
LOW SIGNAL
RANGE
LEVEL
TUNER GAIN
REDUCTION RANGE
RF INPUT SIGNAL
V11(TUNER FWD AGC)
V12(TUNER REVERSE AGC)
V13(MIN) = V14 -2.1V
V14IF(MAX)GAIN BIAS
V15(MIN) = V14 -0.7V
VDELAY
VO
FIGURE 3. TYPICAL OPERATION OF AGC CIRCUITS USING THE CA3154
9 12V
VIDEO
INPUT
1
R4
R6
R38
9.5K 500
15K
7V
4V
Q4
Q6
Q3
Q33
R5
22K
R1
R.6K
Q2
Q1
R2
R3
390
390
R10
7.5K
4.5V
R9
580
R40
16.6K
Q37
R8
520
3.4V
R7
3.4K
Q35
Q36
R39
1K
R83
R46
500 4.24K
R44
2.5K
10.7V
Q38
R43
5K
R45
Q39
7.18K
Q40
Q41
R50
R51
7.9K
27K
Q45
Q44
R47
15K
Q42
R42
15K
Q46
Q43
R54
13.5K
R52
33
R41
15K
R48
1.7K
R49
200
R53
4.17K
SYNC
TO HOR
AFC
VIDEO
TO AGC
SYNC
SEP.
REF BIAS TO
AGC (4V)
2
SYNC
TO AGC
SYNC
OUTPUT
3
5
FIGURE 4. SCHEMATIC OF SYNC SEPARATOR SECTION OF THE CA3154
8-45
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