LM2904VD Motorola Inc, LM2904VD Datasheet - Page 5

• Manufacturer Part Number: LM2904VD
• Description: DUAL DIFFERENTIAL INPUT OPERATIONAL AMPLIFIERS
• Manufacturer: Motorola Inc

MOTOROLA ANALOG IC DEVICE DATA
e 1
e 2
Figure 9. High Impedance Differential Amplifier
V in
MC1403
R1
V CC
C1
+
1/2
LM358
–
1/2
LM358
–
+
a R1
b R1
Figure 7. Voltage Reference
e o = C (1 + a + b) (e 2 – e 1 )
R2
R2
V ref
2.5 V
C R
1
C R
1
R2
–
1/2
LM358
+
1/2
LM358
–
+
R1
V O = 2.5 V (1 +
C
R
R
V CC
LM358, LM258, LM2904, LM2904V
1/2
LM358
–
+
R
R1
R1
R2
R
)
V O
Bandpass
Figure 11. Bi–Quad Filter
Output
V ref
e o
1/2
LM358
–
+
C
V ref
R
V ref
V in
1/2
LM358
–
+
V ref =
R3
100 k
V ref
1
2
R1
Where:
Figure 10. Comparator with Hysteresis
V CC
Figure 8. Wien Bridge Oscillator
V inH =
V inL =
V ref
T BP = Center Frequency Gain
T N = Passband Notch Gain
H =
10 k
1/2
LM358
+
–
1/2
LM358
100 k
–
+
R1 + R2
R1 + R2
R2
R1 + R2
R
R1
C1
R1
R1
5.0 k
(V OH – V ref ) + V ref
(V OL – V ref )+ V ref
(V OH – V OL )
1/2
LM358
C
–
+
For:
50 k
V O
Notch Output
R
f o
Q
T BP
T N
V CC
R2 =
R3 = T N R2
R1 = QR
C1 = 10 C
V OH
f o = 2
V OL
V O
C
= 1.0 kHz
= 10
= 1
= 1
T BP
R1
1
RC
For: f o = 1.0 kHz
f o =
R
C
R1
R2
R3
V inL
V ref =
V O
Hysteresis
2 RC
= 160 k
= 0.001 F
= 1.6 M
= 1.6 M
= 1.6 M
R = 16 k
C = 0.01 F
V ref
1
1
2
V inH
V CC
5