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From : Zahar Kiselev 2:5030/382 Пон 16 Дек 96 03:27
To : All Срд 18 Дек 96 12:57
Subj : 13175/76
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Кто тут интеpесовался микpосхемами для укв пpиемников/пеpедатчиков?
Вот есть такая инфоpмация...
MC13175 MC13176
UHF FM/AM TRANSMITTER
The MC13175 and MC13176 are one chip FM/AM transmitter subsystems
designed for AM/FM communication systems. They include a Colpitts cristal
referencene oscillator, UHF oscillator, 8 (MC13175) or 16 (MC13176)
prescaler and phase detector forming a versataile PLL system. Targeted
applications are in the 470 MHz band and 902 to 928 MHz band covered by FCC
Title 47, Part 15. Other application include local oscillator sources in
UHF and 900 MHz video transmitters, RF Local Area Network (LANs)' and high
friequency clock drivers. The MC13175/76 offer the following features:
- UHF Current Controlled Oscillator
- Uses Easily Available 3rd Overtone or Fundamental Cristal for
Reference
- Fewer External Parts Required
- Low Operating Supply Voltage (1.8 to 5 Vdc)
- Low Supply Drain Currents
- Power Output Adjustable (Up to +10 dBm)
- Differential Output for Loop Antenna or Balun Transformer Networks
- Power Down Feature
- ASK Modulated by Switching Outut On and Off
- (MC13175) Fo=8xFref; (MC13176) Fo=32xFref
MAXIMUM RATING (Ta=25C, unless otherwise noted)
Power Supply Voltage Vcc=7.0 max Vdc
Operating Supply Voltage Range Vcc=1.8...5.0 Vdc
Junction Temperature Tj=+150 C
Operating Ambient Temperature Ta=-40...+85 C
ELECTRICAL CHARACTERISTICS (Vee=-3Vdc, Ta=25 C,unless outherwise noted)
Supply Current (Power down: I11 & I16=0) Iee1=-0.5mkA
Supply Current (Enable [Pin 11] to Vcc thru 30k, I16=0) Iee2=-14mA
Total Supply Current (Transmit Mode) Iee3=-34mA
(Imod=2.0 mA; Fo=320 MHz)
Differencial Output Power (Fo=320MHz; Vref[Pin9]=
500mVp-p; Fo=NxFref}
Imod=2.0mA Pout=+4.7dBm
Imod=0mA Pout=-45dBm
Hold-in Range
MC13175 Pin 13&14 Fh=6.5MHz
MC13176 Fh=8.0MHz
Phase Detector Output Error Current
MC13175 Pin 7 Ierror=25mkA
MC13176 Ierror=27mkA
Oscillator Enable Time Pin 11,8 Tenable=4.0ms
Amplidude Modulation Bandwidh Pin 16 BWam=25MHz
Spurious Outputs (Imod=2.0mA) Pin 13&14 Pson=-50dBc
Spirious Output (Imod=0mA) Psoff=-50dBc
Maximum Divider Input Frequehcy Fdiv=950MHz
Maximum Output Frequency Pin 13&14 Fo=950MHz
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* Origin: GREEN SYSTEM (2:5030/382)
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