HA17741 데이터 시트보기 (PDF) - Hitachi -> Renesas Electronics
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HA17741 Datasheet PDF : 18 Pages
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HA17741/PS
30
CT1 = 102 pF
CT2 = 99 pF
10
C1 = 106 pF
3
1.0
0.3
0.1
VCC = −VEE = 15 V
RT1 = 150 kΩ, RT2 = 150 kΩ
R1 = 151.2 kΩ
R11 = 15 kΩ, R22 = 10 kΩ
R33 = 15 kΩ, R44 = 10 kΩ
CT1, CT2, C1 → 1,000 pF
Use a Mylar capacitor.
With VOP-P = 21 VP-P and
R22 = R44 = 10 kΩ
the frequency of the sine
wave will be under 10 kHz.
Sin out
Cos out
0.03
0.01
100 p
1,000 p
0.01 µ
0.1 µ
CT1, CT2, C1 (F)
Figure 11 HA17741 Quadrature Sine Wave Oscillator
f−CT1, CT2, C1 Characteristics
← Sin out
0
← Cos out
Vertical: 5 V/div
Horizontal: 0.2 ms/div
Circuit constants
CT1 = 1000 pF (990), CT2 = 1000 pF (990)
RT1 = 150 kΩ, RT2 = 150 kΩ
C1 = 1000 pF (990), R1 = 160 kΩ
R11 = 15 kΩ, R22 = 10 kΩ
R33 = 16 V, R44 = 10 kΩ
VCC = 15 V, VEE = −15 V
Figure 12 Sine and Cosine Output Waveforms
Triangular Wave Generator
Integrator
D1 R3
D2 R4
C
−
A1
+
Vout1
Vout2
Hysteresis comparator
R1
R2
VA
+
A2
−
R1/R2
Figure 13 Triangular Wave Generator Operating Circuit
8
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