Datasheet

12
FN957.10
July 11, 2005
FIGURE 11. METER DRIVER AND BUFFER AMPLIFIER FIGURE 12. SINE WAVE SHAPER
FIGURE 13. SWEEPING GENERATOR
FREQUENCY
CALIBRATION
MINIMUM
200µA
METER
FREQUENCY
CALIBRATION
MAXIMUM
METER
SENSITIVITY
ADJUSTMENT
METER
POSITION
ADJUSTMENT
CA3080A
6
3
2
4
7
+
CA3140
-
FREQUENCY
ADJUSTMENT
10kΩ
620Ω
4.7kΩ
0.1µF
12kΩ
2kΩ
500kΩ
620kΩ
51kΩ
3MΩ
510Ω
510Ω
2kΩ
3.6kΩ
-15V
M
11
14
13
3
/
5
OF CA3086
5
4
TO CA3080A
OF FUNCTION
GENERATOR
(FIGURE 10)
7
8
6
9
1kΩ
2.4kΩ
2.5
kΩ
+15V
SWEEP IN
10
12
6
3
2
4
7
+
CA3140
-
7
2856
1
43
9
5.1kΩ
0.1µF
-15V
D
1
D
4
D
2
D
3
D
6
D
5
CA3019
DIODE ARRAY
EXTERNAL
OUTPUT
+15V
+15V
-15V
100
kΩ
SUBSTRATE
OF CA3019
TO
WIDEBAN
D
OUTPUT
AMPLIFIER
7.5kΩ
5.6kΩ
-15V
R3 10kΩ
10kΩ
0.1µF
1MΩ
9.1kΩ
R
1
10kΩ
R
2
1kΩ
430Ω
4
7
+
CA3140
-
0.1
+15V
-15V
2
3
6
µF
0.1
µF
COARSE
RATE
SAWTOOTH
SYMMETRY
0.47µF
0.047µF
4700pF
470pF
7
3
2
6
4
+
CA3140
-
5
1
3
24
15
51kΩ 6.8kΩ 91kΩ
10kΩ
100Ω
390Ω
3.9Ω
25kΩ
+15V
-15V
10kΩ
10kΩ
100kΩ
30kΩ
43kΩ
LOG
VIO
50kΩ
LOG
RATE
10kΩ GATE
PULSE
OUTPUT
-15V
EXTERNAL OUTPUT
TO FUNCTION GENERATOR “SWEEP IN”
SWEEP WIDTH
TO OUTPUT
AMPLIFIER
36kΩ
51kΩ
75kΩ
50kΩ
SAWTOOTH
“LOG”
TRIANGLE
+15V
+15V
4
7
+
CA3140
-
3
2
6
+15V
TRANSISTORS
FROM CA3086
ARRAY
ADJUST
TRIANGLE
SAWTOOTH
“LOG”
8.2kΩ
100kΩ
100kΩ
FINE
RATE
SAWTOOTH
22MΩ
1MΩ
18MΩ
750kΩ
“LOG”
1N914
1N914
SAWTOOTH AND
RAMP LOW LEVEL
SET (-14.5V)
-15V
CA3140, CA3140A