LM2904D Просмотр технического описания (PDF) - ON Semiconductor
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LM2904D Datasheet PDF : 14 Pages
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LM358, LM258, LM2904, LM2904A, LM2904V, NCV2904
VCC
MC1403
R1
VCC
R2
−
1/2
LM358
VO
+
2.5 V
VO
=
2.5 V (1 +
R1
R2
)
50 k
Vref
Vref
=
1
2
VCC
5.0 k
10 k
− VCC
1/2
LM358
+
R
RC
C
VO
fo =
1
2 p RC
For: fo = 1.0 kHz
R = 16 kW
C = 0.01 mF
Figure 10. Voltage Reference
Figure 11. Wien Bridge Oscillator
e1
+
1/2
1
C
R
R
LM358
−
R1 a R1
−
1/2
LM358
eo
+
b R1
−
1/2
1
C
R
LM358
e2
+
R
eo = C (1 + a + b) (e2 − e1)
Figure 12. High Impedance Differential Amplifier
R1
Vref
Vin
R2
+
1/2
LM358
−
VOH
VO
VO VOL
VinL =
R1
R1 + R2
(VOL − Vref)+ Vref
VinH =
R1
R1 + R2
(VOH −
Vref) +
Vref
H=
R1
R1 + R2
(VOH − VOL)
Hysteresis
VinL VinH
Vref
Figure 13. Comparator with Hysteresis
Vin C1
R2
R
−C
1/2
LM358
+
Vref
R2
R
100 k
C
R
−
1/2
100 k
−
1
fo = 2 p
R1 = QRRC
R2 =
R1
TBP
R3 = TN R2
Vref =
1
2
VCC
LM358
+
Vref
Bandpass
Output
R1
1/2
C1 = 10 C
LM358
+
For: fo = 1.0 kHz
Vref
Q = 10
R3
TBP = 1
TN = 1
−
1/2
LM358
+
C1
Notch Output R = 160 kW
C = 0.001 mF
R1 = 1.6 MW
Vref
Where: TBP = Center Frequency Gain
TN = Passband Notch Gain
R2 = 1.6 MW
R3 = 1.6 MW
Figure 14. Bi−Quad Filter
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