MC3458D 데이터 시트보기 (PDF) - Motorola => Freescale
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MC3458D Datasheet PDF : 8 Pages
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MC3458 MC3358
Figure 7. Voltage Reference
VCC
VCC
10 k
R2
–
1/2
MC3458
VO
+
10 k
R1
VO
=
R1
R1 +R2
VO =
1
2
VCC
Figure 8. Wien Bridge Oscillator
50 k
10 k
Vret
Vref =
1
2
VCC
R
5.0 k
VCC
–
1/2
MC3458
+
R
C
C
VO
fo =
1
2πRC
For:
fo
= 1.0 kHz
R
= 16 kΩ
C
= 0.01 µF
Figure 9. High Impedance Differential Amplifier
e1
+
1/2
MC3458
–
1
C
R
R
a R1
R1
–
1/2
MC3458
eo
b R1
– 1/2
MC3458
+
1
C
R
e2
+
R
eo = C (1 +a +b) (e2 –e1)
R1
Vret
Vin
Figure 10. Comparator with
Hysteresis
R2
VOH
Hysteresis
+
1/2
MC3458
–
VO
VO
VOL
VinL =
R1
R1 +R2
(VOL – Vref) +Vref
VinL VinH
Vref
VinH =
R1
R1 +R2
(VOH – Vref) +Vref
Vh =
R1
R1 +R2
(VOH – VOL)
C1
R2
Vin
R
C
– 1/2
MC3458
+
Vref
R2
Where: TBP = center frequency gain
TN = passband notch gain
Figure 11. Bi–Quad Filter
R
100 k
C
–
1/2
MC3458
+
Vref
Bandpass
R1 Output
100 k
R3
–
1/2
MC3458
+
Vref
–
1/2
C1
MC3458
+
Vref
fo =
1
2πRC
R1 = QR
R2 = R1
TBP
R3 = TN R2
C1 = 10 C
For: fo = 1.0 kHz
Q = 10
TBP = 1
TN = 1
Notch Output
Vref =
1
2
VCC
R = 160 kΩ
C = 0.001 µF
R1 = 1.6 MΩ
R2 = 1.6 MΩ
R3 = 1.6 MΩ
6
MOTOROLA ANALOG IC DEVICE DATA
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