View uma1020am 2 datasheet:

INTEGRATED CIRCUITS DATA SHEET UMA1020AM Low-voltage dual frequency synthesizer for radio telephones 1995 Jul 06 Product specification Supersedes data of November 1994 File under Integrated Circuits, IC03 Philips Semiconductors Product specification Low-voltage dual frequency UMA1020AM synthesizer for radio telephones The principal synthesizer operates at RF input frequencies FEATURES up to 1.7 GHz the auxiliary synthesizer operates at • Low current from 3 V supply 300 MHz. The auxiliary loop is intended for the first IF or to • Fully programmable RF divider transmit offset loop-frequency settings. Each synthesizer has a fully programmable reference divider. All divider • 3-line serial interface bus ratios are supplied via a 3-wire serial programming bus. • Second s