MC1391P View Datasheet(PDF) - Motorola => Freescale
Part Name
Description
Manufacturer
MC1391P Datasheet PDF : 6 Pages
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MC1391
Figure 3. Frequency versus Temperature
30
20
Reference Frequency
10
= 15.750 Hz
0
–10
–20
–30
S3 in Position 2
–40
–50
Figure 4. Frequency Drift versus Warm–Up Time
40
30
20
Reference Frequency
10
= 15.750Hz
–60
–70
0 10 20 30 40 50 60 70 80
TA, AMBIENT TEMPERATURE (°C)
0
0
30
60
90
120
t, TIME (s)
Figure 5. Mark Space Ratio
4.75
4.5
4.25
fO = 15,750 Hz
t = 63.5 µs
4.0
3.75
3.5
3.25
3.0
2.75
0
10
20
30
40
50
POSITIVE PULSE WIDTH (µs)
Pre–Driver
Figure 6. Representative Schematic Diagram
Oscillator
Timing
7
Oscillator
VCC
6 Regulator
R1 2.6k
R6
R8
3.3k
2.4k
Mark–Space
Ratio 8
Output
1
Q1
Q6
Q4
Q3
R4 430
Q7 Q8
R9
1.2k
Q2
R2
R3
6.8k
Q5
7.5k
R5 2.4k Q9
Q10 R10
3.6k
R7 470
R14
330
R11 Z2
3.0k
D1
Q11
D2
Z1 R12
820
R15
3.3k
D3
R13
240
Phase Detector
R17 R22 R23
10k
2.15
k
2k
5
Q18
Q14
Q13
R
18
R
16
7.5k Q15
7.5k
6.8k
R19
Q12 R20 Q17
Phase
Detector
Output
Q16
4
Sawtooth
Input
510
R21
910
D4
2
Ground
3
Sync Input
MOTOROLA ANALOG IC DEVICE DATA
3
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