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PDF MC1374 Data sheet ( Hoja de datos )
| Número de pieza | MC1374 | |
| Descripción | TV MODULATOR CIRCUIT | |
| Fabricantes | Motorola Semiconductors | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MC1374 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
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TV Modulator Circuit
The MC1374 includes an FM audio modulator, sound carrier oscillator, RF
oscillator, and RF dual input modulator. It is designed to generate a TV signal
from audio and video inputs. The MC1374’s wide dynamic range and low
distortion audio make it particularly well suited for applications such as video
tape recorders, video disc players, TV games and subscription decoders.
• Single Supply, 5.0 V to 12 V
• Channel 3 or 4 Operation
• Variable Gain RF Modulator
• Wide Dynamic Range
• Low Intermodulation Distortion
• Positive or Negative Sync
• Low Audio Distortion
• Few External Components
Order this document by MC1374/D
MC1374
TV MODULATOR CIRCUIT
SEMICONDUCTOR
TECHNICAL DATA
14
1
P SUFFIX
PLASTIC PACKAGE
CASE 646
ORDERING INFORMATION
Device
Operating
Temperature Range
Package
MC1374P
TA = 0° to +70°C
Plastic DIP
Figure 1. Simplified Application
V
Channel 3
4
+
+VCC = 12V
4
C1
0.001
+
R1
470
C8
0.001
5–25
R3 C7
470
L1
C2
56
R2
470
S1
R10
10k
D1
MPN3404
7
6
5
C9
0.001
3
8 R7
75Ω
9
10
C11
22
0.22µH
L3
C12
47
0.22µH
L4
C13
22
C15
0.001
+
C4 C3
R4 50 120
6.8k
+
C14
0.01
L2
C5
0.001
R6
R5 2.2k
3.3k
L1 – 4 Turns #22, 1/4″ Dia.
L2 – 40 Turns, #36, 3/16″ Dia.
4 U1
MC1374
3
2
1
11
C16
12 47
R8
13 2.2k
14
R14
56k
+
R12
180k
D2
1N914
+
C10
10µF
+
R13
Shaded Parts Optional 30k
C6
1µF
VPin 1
VPin 11
t
Output
R9
560
R11
220
Video In
Audio In
MOTOROLA ANALOG IC DEVICE DATA
© Motorola, Inc. 1996
Rev 0
1
1 page  
MC1374
Figure 5. The Operating Window
12
11
10
RL = 75 Ω
I1 = 1.15 mA
VCC – 2I1RL
VCC
9.0 VCC – φ – 2I1RL
8.0
7.0
VCC – 3φ – 2I1RL
3φ
6.0
5.0
4.0
3.0
Recommended
V1 & V11
Operating Region
2.0 Absolute Min = 1.6 V
1.0 (2φ + Sat)
0
5.0 6.0 7.0 8.0 9.0 10
11
VCC, SUPPLY VOLTAGE (Vdc)
12
Figure 6. 920 kHz Beat
0
Initial Video = 1.0 Vdc
–10 Chroma (3.58 MHz) = 300 mVpp
Sound (4.5 MHz) a) = 250 mVpp
–20 b) = 500 mVpp
–30 Gain Resistor RG = 1.0 kΩ
–40
b
–50
a
–60
–70
–80
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4
DIFFERENTIAL INPUT (V11 – V1) [Vdc)
Figure 7. RF Oscillator Frequency
versus Temperature
10
0 fc ≈ 61.25 MHz
VCC = 12 Vdc
–10
–20
–30
–40
–50
–60
–70
0
25 50 75
TA, AMBIENT TEMPERATURE (°C)
100
10
0
–10
–20
–30
–40
–50
–60
–70
5.0
Figure 9. RF Oscillator Frequency
versus Supply Voltage
TA = 25°C
fc = 61.25 MHz
6.0 7.0 8.0 9.0 10 11 12
VCC, SUPPLY VOLTAGE (V)
Figure 8. 920 kHz Beat
0
–10 Initial Video = 0.5 Vdc
Chroma (3.58 MHz) = 150 mVpp
–20 Sound (4.5 MHz) a) = 125 mVpp
b) = 250 mVpp
–30 Gain Resistor RG = 1.0 kΩ
–40
–50
b
–60
a
–70
–80
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4
DIFFERENTIAL INPUT (V11 – V1) [Vdc)
Figure 10. 920 kHz Beat
0
–10 Initial Video = 1.0 Vdc
Chroma (3.58 MHz) = 300 mVpp
–20 Sound (4.5 MHz) a) = 250 mVpp
b) = 500 mVpp
–30 Gain Resistor (RG) = 2.2 kΩ
–40
–50
b
–60
a
–70
–80
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.5 1.6 1.8 2.0 2.2 2.4 2.8
DIFFERENTIAL INPUT (V11 – V1) [Vdc)
MOTOROLA ANALOG IC DEVICE DATA
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet MC1374.PDF ] | |
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