LMV321 데이터 시트보기 (PDF) - ON Semiconductor
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LMV321 Datasheet PDF : 20 Pages
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LMV321, LMV358, LMV324
APPLICATIONS
VCC
MC1403
R1
VCC
R2
−
LMV321
VO
+
2.5 V
VO
+
2.5
V(1
)
R1)
R2
Figure 28. Voltage Reference
50 k
Vref
Vref
+
1
2
VCC
5.0 k
10 k
−
VCC
LMV321
+
R
RC
C
VO
fO
+
1
2pRC
For: fo = 1.0 kHz
R = 16 kW
C = 0.01 mF
Figure 29. Wien Bridge Oscillator
R1
Vref
Vin
R2
Hysteresis
VOH
+
VO
LMV321
−
VO
VOL
VinL VinH
VinL
+
R1
R1 ) R2
VinH
+
R1
R1
)
R2
H + R1
R1 ) R2
Vref
(VOL * Vref) ) Vref
(VOH * Vref) ) Vref
(VOH * VOL)
Figure 30. Comparator with Hysteresis
VCC
R1
Vin
C
C
R3
−
LMV321
+
R2
Vref
CO
VO
CO = 10 C
Given: fo = center frequency
A(fo) = gain at center frequency
Choose
value
fo,
C
Q
Then : R3 +
pfO C
R1 + R3
2 A(fO)
R1 R3
R2 +
4Q2 R1 * R3
For less than 10% error from operational amplifier,
((QO fO)/BW) < 0.1 where fo and BW are expressed in Hz.
If source impedance varies, filter may be preceded with
voltage follower buffer to stabilize filter parameters.
Figure 31. Multiple Feedback Bandpass Filter
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