fdi-4423 Frequency Devices, Inc., fdi-4423 Datasheet - Page 4

• Manufacturer Part Number: fdi-4423
• Description: 14 Pin Dip Quadrature Oscillator
• Manufacturer: Frequency Devices, Inc.

0.02 Hz to 20 kHz
Resistor Programmable
External Connections
20 kHz Quadrature Oscillator
The FDI-4423 does not require and external
components to obtain a 20 kHz quadrature oscillation.
The connection diagram is shown in Figure 1.
Figure 1
Resistor Programmable Quadrature Oscillator
For resistor programmable frequencies in the 2 kHz to
20 kHz frequency range the connection diagram is
provided in Figure 2. Note that only two resisters of
equal value are required. Resistor values are found
using Equation 1.
Where R is in KΩ and f is in kHz.
Figure 2
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0.1
0.1
2
8
2
8
+15V
10
+15V
10
3
R
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4423
11
4423
11
12
-15V
9
-15V
R
9
13
1
7
0.1
13
1
7
0.1
SINE
COSINE
SINE
COSINE
(1)
4
Quadrature Oscillator Programmable to 0.02 Hz
For oscillation frequencies below 2 kHz the addition of
two resistors and two capacitors of equal value is
required. The connections of Figure 3 should be used.
The frequency of oscillation can be found using
Equation 2.
Where f is in Hz, C is in µFd, and R is in KΩ.
Alternately you can select a capacitance using Figure 4
and calculate the resistance required using Equation 3.
Where R is in KΩ, f is in Hz, and C is in µFd.
Figure 3
0.1
C
2
8
3
+15V
10
R
4423
11
12
Quadrature Oscillator
R
-15V
9
13
14
1
7
0.1
FDI-4423
14 Pin DIP
C
SINE
COSINE
(2)