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Q67006-A5179 Datasheet

  • Q67006-A5179

  • Video Modulator for FM/AM-Audio

  • 23頁

  • INFINEON   INFINEON

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Video Modulator for
FM/AM-Audio
MGM 3000X
Bipolar IC
Features
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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
Symmetrical oscillator with separate RF-ground
Low spurious radiation
High stability of the RF-oscillator frequency
High stability of the audio oscillator
Internal reference voltage
12 V supply voltage
Ordering Code
Q67000-A5179
Q67006-A5179
P-DSO-20-1
Type
MGM 3000X
MGM 3000X
Package
P-DSO-20-1 (SMD)
P-DSO-20-1 Tape & Reel (SMD)
Functional Description and Application
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.
Circuit Description
Oscillator
The RF-oscillator is available at pins 3 - 7. The 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.
Semiconductor Group
1
12.94

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