Features: · FM- and AM-audio modulator· Audio carrier output for suppression of harmonics· Sync level clamping of video input signal· Controlling of peak white value· Continuous adjustment of modulation depth for positive or negative values· Symmetrical mixer output with separate ground area· Symm...
MGM3000X: Features: · FM- and AM-audio modulator· Audio carrier output for suppression of harmonics· Sync level clamping of video input signal· Controlling of peak white value· Continuous adjustment of modula...
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Parameter |
Symbol |
Value |
Unit |
Remark | ||
Min |
Typ |
Max | ||||
Supply voltage pin 8 |
VS |
- 0.3 |
14.5 |
V |
||
Current from pin 2 |
- I2 |
0 |
2 |
mA |
V2 = 7-8 V, VS = 10-13.5 V | |
Voltage at pin 1 Voltage at pin 2 Voltage at pin 12 |
V1 V2 V10 |
0 6 0 |
2 8.5 1.5 |
V V Vpp |
only via C (max.1 mF) | |
Capacitance at pin 2 Capacitance at pin 13 |
C2 C13 |
0 0 |
100 15 |
nF mF |
||
Voltage at pin 14 Voltage at pin 15 Voltage at pin 17 Voltage at pin 18 |
V14 V15 V17 V18 |
- 0.3 V2 V2 V2 - 1.5 |
1.4 13.5 13.5 V2 + 1.5 |
V V V V |
VS = 10-13.5 V |
The monolithic integrated circuit MGM 3000X is especially suitable as a modulator for the 48 to 860 MHz frequency range.Video recorders, cable converters, TV-converter networks, demodulators, video generators, video security systems, amateur TV-applications and personal computers.
The MGM 3000X RF-oscillator is available at pins 3 - 7. The MGM 3000X oscillator operates as a symmetrical Colpitts circuit. The oscillator chip ground, pin 5, should be connected to ground at the resonance circuit shielding point. An external oscillator can be injected inductively or capacitively via pins 3 and 7. The layout of the PCB should be such as to provide a minimum shielding attenuation between the oscillator pins 3 - 7 and modulator output pins 15 - 17 of approximately 80 dB.