ADF4108

Data Sheet PLL Frequency Synthesizer ADF4108 FEATURES GENERAL DESCRIPTION 8.0 GHz bandwidth 3.2 V to 3.6 V power supply Separate charge pump supply (VP) allows extended tuning voltage in 3.3 V systems Programmable, dual-modulus prescaler 8/9, 16/17, 32/33, or 64/65 Programmable charge pump currents Programmable antibacklash pulse width 3-wire serial interface Analog and digital lock detect Hardware and software power-down mode Loop filter design possible with ADIsimPLL 4 mm × 4 mm, 20-lead chip scale package APPLICATIONS Broadband wireless access Satellite systems Instrumentation Wireless LANs Base stations for wireless radio The ADF4108 frequency synthesizer can be used to implement local oscillators in the upconversion and downconversion sections of wireless receivers and transmitters. It consists of a low noise digital PFD (phase frequency detector), a precision charge pump, a programmable reference divider, programmable A and B counters, and a dual-modulus prescaler (P/P + 1)...