SL5067
Q=2
85
80
75
70
65
OUTPUT
LEVEL
(dB V)
UNTERMI-
NATED
Q=8
PICTURE
CARRIER
Q=16
480
440
400
SOUND
SUBCARRIER
380
320
280
240
200
160
DEVIATION
120
80
40
0
FM
DEVIATION
(kHz/V)
m
60
55
50
45
40
35
30
25
20
20
40
60
80
100 120 140 160 180 200 220 240 260 280
SOUND TANK CAPACITANCE
3rd HARMONIC
Fig. 13 Sound oscillator harmonics v. tank capacitance (f
SOUND
=6.0MHz)
V
CC
2
75
75
V
CC
75
100nF
10nF
1nF
330n
470nF
75
1
2
3
4
20
19
18
17
MODULATED
OUTPUT
10n
VIDEO INPUT
V
CC
W
1nF
RV2
220p
470n
AUDIO
INPUT
220K
RV1
1
2
18
17
16
SL5067
4MHZ
SP5510
18p
SDA
SCL
NC
NC
NC
NC
3
4
5
6
7
8
9
W
1n
1n
1.2p
5
6
7
8
9
10
16
15
14
13
12
11
5.6
m
120p
L
AUDIO
C
AUDIO
1.2p
1.5p
V
CC
100nF
15
14
13
12
11
10
10n
NC
NC
NC
NC
100n
+30V
1.5p
22K
2 turns 6mm
∅
1
turn 6mm
∅
22K
180n
39n
2N3904
10K
BB405
100p
100pF
5p6
22K
10n
22K
NOTES:– RV1 adjusts the modulation index
RV2 adjusts the picture carrier to sound carrier ratio
In applications the potentiometers should be replaced by 1% fixed resistors connected between V
CC
and G
ND
The values chosen must reproduce the correct bias voltages on the relevant input pins
Fig.14 typical application showing video modulator with synthesised oscillator
GEC [ GENERAL ELECTRIC COMPANY ]
