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

7

4

7

5

4

4

7

6

CA3160

3

2

6

8.2k

Ω

2

3

2

3

6

5

20pF

VOLTAGE-CONTROLLED

CURRENT SOURCE

+7.5V

CA3080A

1k

Ω

1k

Ω

2M

Ω

100k

Ω

7.5V

+7.5V

SYMMETRY

MAX FREQ. SET

EXTERNAL

SWEEPING INPUT

+7.5V

10k

Ω

6.2k

Ω

500

Ω

-7.5V

MIN FREQ. SET

4.7k

Ω

-7.5V

0.9 - 7pF

6.2k

Ω

10 - 80pF

4 - 60pF

+

-

BUFFER VOLTAGE

FOLLOWER

0.1

µF

0.1

µF

-7.5V

+7.5V

2k

Ω

10k

Ω

CENTERING

100k

Ω

+7.5V

-7.5V

+7.5V

430pF

6.8M

Ω

CA3080

+

-

30k

Ω

-7.5V

10k

Ω

50k

Ω

15 - 115

4 - 60

HIGH-FREQ.

LEVEL

ADJUST

2-1N914

HIGH-

FREQ.

SHAPE

THRESHOLD

DETECTOR

+

-

FREQ.

ADJUST

500

Ω

CA3080, CA3080A