CA3080A Intersil, CA3080A Datasheet - Page 4

• Manufacturer Part Number: CA3080A
• Description: 2MHz / Operational Transconductance Amplifier
• Manufacturer: Intersil

Typical Applications
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.
FIGURE 3A. TWO-TONE OUTPUT SIGNAL FROM THE
+7.5V
7.5V
1kΩ
VOLTAGE-CONTROLLED
CURRENT SOURCE
1kΩ
10kΩ
MAX FREQ. SET
100kΩ
FUNCTION GENERATOR
8.2kΩ
20pF
SYMMETRY
2MΩ
6.2kΩ
3
2
+7.5V
CA3080A
+
-
ADJUST
FREQ.
FIGURE 2. 1,000,000/1 SINGLE-CONTROL FUNCTION GENERATOR - 1MHz TO 1Hz
500Ω
FIGURE 3. FUNCTION GENERATOR DYNAMIC CHARACTERISTICS WAVEFORMS
+7.5V
5
7
4.7kΩ
4
(Continued)
4
MIN FREQ. SET
500Ω
-7.5V
6
EXTERNAL
SWEEPING INPUT
-7.5V
10 - 80pF
C
0.9 - 7pF
C
6.2kΩ
2
1
BUFFER VOLTAGE
CA3080, CA3080A
4 - 60pF
C
HIGH-
FREQ.
SHAPE
FOLLOWER
3
3
2
CA3160
+
-
+7.5V
-7.5V
7
4
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 3B. TRIPLE-TRACE OF THE FUNCTION GENERATOR
6
0.1
µF
0.1µF
2kΩ
-7.5V
10kΩ
HIGH-FREQ.
430pF
SWEEPING TO 1MHz
ADJUST
LEVEL
4 - 60
CENTERING
C
100kΩ
4
6.8MΩ
2
3
+7.5V
5
CA3080
+
-
30kΩ
50kΩ
C
15 - 115
THRESHOLD
DETECTOR
5
10kΩ
7
4
+7.5V
-7.5V
6
2-1N914