ha17741ps ETC-unknow, ha17741ps Datasheet - Page 7

• Manufacturer Part Number: ha17741ps
• Description: General-purpose Operational Amplifier Frequency Compensated
• Manufacturer: ETC-unknow

Quadrature Oscillator
Figure 10 shows the circuit diagram for a quadrature sine wave oscillator. This circuit consists of two
integrators and a limiter circuit, and provides not only a sine wave output, but also a cosine output, that is,
it also supplies the waveform delayed by 90°. The output amplitude is essentially determined by the limiter
circuit.
Figure 9 HA17741 Wien Bridge Sine Wave Oscillator Operating Waveform
R
Figure 10 Quadrature Sine Wave Oscillator
T1
C
1
+
C
T1
A1
Sin out
R
T2
R
1
Vertical:
Horizontal:
Test circuit condition
Test results
+
C
T2
A2
V
R
C
f = 929.7 Hz, T.H.P = 0.06%
CC
1
1
Cos out
= 110 k , R
= 0.0015 F, C
= 15 V, V
5 V/div
0.5 ms/div
D
D
1
2
EE
V
V
2
4
8
= 15 V
= 11 k
R
R
R
R
2
11
22
44
33
= 0.015 F
HA17741/PS
7