View uma1021am 2 datasheet:

INTEGRATED CIRCUITS DATA SHEET UMA1021AM Low-voltage frequency synthesizer for radio telephones 1998 Nov 19 Product specification Supersedes data of 1998 Mar 03 File under Integrated Circuits, IC17 Philips Semiconductors Product specification Low-voltage frequency synthesizer for UMA1021AM radio telephones The device is designed to operate from 3 NiCd cells, in FEATURES pocket phones, with low current and nominal 3 V supplies. • Low phase noise The synthesizer operates at RF input frequencies • Low current from 3 V supply up to 2.2 GHz with a fully programmable reference divider. • Fully programmable main divider All divider ratios are supplied via a 3-wire serial • 3-line serial interface bus programming bus. • Independent fully programmable reference divider, Se