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| UMA1021AM Datasheet, PDF (10/16 Pages) NXP Semiconductors – Low-voltage frequency synthesizer for radio telephones | |||
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Philips Semiconductors
Low-voltage frequency synthesizer for
radio telephones
APPLICATION INFORMATION
Product speciï¬cation
UMA1021AM
handbook, full pagewidth
transmit
power data
amplifier
transmit
mixer
SPLITTER
duplex
filter
low noise
amplifier
TCXO
1st mixer
PLL
VCO
LPF
MAIN
DIVIDER
REFERENCE
DIVIDER
PHASE
COMPARATOR
AND
CHARGE PUMP
UMA1021AM
to demodulation
2nd mixer
MGL407
Fig.4 Typical application block diagram.
1998 Nov 19
10
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