Dual RF PLL Frequency Synthesizers ADF4206/ADF4208 FEATURES ADF4206: 550 MHz/550 MHz ADF4208: 2.
0 GHz/1.
1 GHz 2.
7 V to 5.
5 V power supply Selectable charge pump supply (VP) allows extended tuning voltage in 3 V systems Selectable charge pump currents On-chip oscillator circuit Selectable dual modulus prescaler RF2: 32/33 or 64/65 RF1: 32/33 or 64/65 3-wire serial interface Power-down mode APPLICATIONS Wireless handsets (GSM, PCS, DCS, CDMA, WCDMA) Base stations for wireless radio (GSM, PCS, DCS, CDMA, WCDMA) Wireless LANS Communications test equipment CATV equipment GENERAL DESCRIPTION The ADF420x family of dual frequency synthesizers are used to implement local oscillators in the upconver...

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