CA3280, CA3280A
3
+15V
10kΩ
2kΩ
14
16
15
+
1/2
13
1800pF
CA3280
33pF
51Ω
-
2kΩ
-15V
2kΩ
6
1N914
14
4
6
7
10kΩ
9
OUTPUT
+
1/2
100kΩ
TO 10kΩ
12
CA3280
3
TO 10kΩ
6
3
1
2
33pF
51Ω
300pF
-
1/2 CD4013
10
4
10kΩ
5
8
1
100Ω
-15V
0.05µF
FIGURE 8. TWO CHANNEL LINEAR MULTIPLEXER
V+
14
3.6kΩ
V+ = +7.5V
100kΩ
V+
V-
0.1µF
16
V+
+
1/2
7
560kΩ
13
3
2
200Ω
2.7kΩ
CA3280
+
3.3kΩ
11
-
10
9
CA3160
15
910kΩ
6
6
8
-
15 - 115pF
200Ω
1/2
CA3280
3
-
12
4
+
V+
V+
V-
4
1
0.1µF
100kΩ
V-
V- = -7.5V
3.3kΩ
V-
5.6kΩ
500Ω
4 - 60pF
10kΩ
MAX FREQ.
SET
1kΩ
2kΩ
MIN FREQ. SET
1N914
1N914
FIGURE 9. CA3280 USED IN CONJUNCTION WITH A CA3160 TO PROVIDE A FUNCTION GENERATOR WITH A TUNABLE RANGE OF
2Hz TO 1MHz
+15V
P-P
2kΩ
170mV
30kΩ
14
3
16
15
+
1/2
CA3280
13
100kΩ
51Ω
-
2
+15V
1
6.8
+15V
0.1
µF
MΩ MΩ
11
200Ω
3.9
kΩ
6
-15V
9
7
+
100kΩ
1/2
+15V
12
CA3280
1MΩ
-
10
100kΩ
-15V
4
2kΩ
-15V
FIGURE 10. TRIANGLE WAVE-TO-SINE WAVE CONVERTER
7
INTERSIL [ Intersil ]
