MC1374 View Datasheet(PDF) - Motorola => Freescale
Part Name
Description
Manufacturer
MC1374 Datasheet PDF : 10 Pages
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MC1374
Figure 13. Modulator Transfer Function
2.1
TA = 25°C
2.0
(1.76 MHz)
VCC = 12 V
1.9
VCC = 5.0 V, 9.0 V
1.8
1.7
1.6
1.5
1.4
1.3
0
1.0
2.0
3.0 4.0
5.0
6.0
7.0
DC INPUT VOLTAGE, PIN 14 (V)
Figure 14. Distortion versus Modulation Depth
5.0
VCC = 12 V
4.0
TA = 25°C
fc = 4.5 MHz
3.0
Self Bias (2.9–3.0 V)
2.0
Optimum Bias (2.6–2.7 V)
1.0
0
0
25
50
75
100
DEVIATION (kHz)
Figure 15. Modulator Transfer Function
4.9
TA = 25°C
4.8
(4.5 MHz)
4.7
4.6
VCC = 12 V
VCC = 5.0 V, 9.0 V
4.5
4.4
4.3
4.2
4.1
0
1.0
2.0
3.0 4.0
5.0
6.0
7.0
DC INPUT VOLTAGE, PIN 14 (V)
Figure 16. FM System Frequency
versus Temperature
4.55
4.54 VCC = 12 V
4.53
Pin 14 V to 2.6 V
4.52
4.51
180 k/30 k Divider
4.50
4.49
Pin 14 Open
4.48
4.47
0
25
50
75
100
TA, AMBIENT TEMPERATURE (°C)
11.6
11.4
11.2
11.0
10.8
10.6
10.4
10.2
10.0
9.8
9.6
0
Figure 17. Modulator Transfer Function
TA = 25°C
(10.7 MHz)
12 V
9.0 V VCC
5.0 V
1.0 2.0
3.0 4.0
5.0 6.0
7.0
DC INPUT VOLTAGE, PIN 14 (V)
Figure 18. FM System Frequency versus VCC
4.50 Pin 14 to 2.6 V Source
4.49
4.48
Pin 14 Open
4.47
4.46
Pin14 – 180 k/ 30 k Divider
4.45
4.44
4.43
TA = 25°C
4.42
4.0 5.0 6.0 7.0 8.0 9.0 10
VCC, SUPPLY VOLTAGE (Vdc)
11 12
MOTOROLA ANALOG IC DEVICE DATA
7
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