
4
FIGURE 2. 1,000,000/1 SINGLE-CONTROL FUNCTION GENERATOR - 1MHz TO 1Hz
NOTE: A Square-Wave Signal Modulates The External Sweeping
Input to Produce 1Hz and 1MHz, showing the 1,000,000/1 frequency
range of the function generator.
NOTE: The bottom trace is the sweeping signal and the top trace is
the actual generator output. The center trace displays the 1MHz signal
via delayed oscilloscope triggering of the upper swept output signal.
FIGURE 3A. TWO-TONE OUTPUT SIGNAL FROM THE
FUNCTION GENERATOR
FIGURE 3B. TRIPLE-TRACE OF THE FUNCTION GENERATOR
SWEEPING TO 1MHz
FIGURE 3. FUNCTION GENERATOR DYNAMIC CHARACTERISTICS WAVEFORMS
Typical Applications (Continued)
7
4
7
5
4
7
6
CA3160
3
2
6
8.2k
2
3
2
3
6
5
20pF
VOLTAGE-CONTROLLED
CURRENT SOURCE
+7.5V
CA3080A
1k
1k
2M
100k
7.5V
+7.5V
SYMMETRY
MAX FREQ. SET
EXTERNAL
SWEEPING INPUT
+7.5V
10k
6.2k
500
-7.5V
MIN FREQ. SET
4.7k
-7.5V
0.9 - 7pF
C1
6.2k
10 - 80pF
C2
4 - 60pF
C3
+
-
BUFFER VOLTAGE
FOLLOWER
0.1
F
0.1
F
-7.5V
+7.5V
2k
10k
CENTERING
100k
+7.5V
-7.5V
+7.5V
430pF
6.8M
CA3080
+
-
30k
-7.5V
10k
50k
C5
15 - 115
C4
4 - 60
HIGH-FREQ.
LEVEL
ADJUST
2-1N914
HIGH-
FREQ.
SHAPE
THRESHOLD
DETECTOR
+
-
FREQ.
ADJUST
500
CA3080, CA3080A