GENERAL DESCRIPTION

The ADF4196 frequency synthesizer can be used to implement local oscillators (LO) in the upconversion and downconversion sections of wireless receivers and transmitters. Its architecture is specifically designed to meet the GSM/EDGE lock time requirements for base stations, and the fast settling feature makes the ADF4196 suitable for pulse Doppler radar applications.

FEATURES

Fast settling, fractional-N PLL architecture

Single PLL replaces ping-pong synthesizers

Frequency hop across GSM band in 5 μs with phase settled

within 20 μs

1 degree rms phase error at 4 GHz RF output

Digitally programmable output phase

RF input range up to 6 GHz

3-wire serial interface

On-chip, low noise differential amplifier

Phase noise figure of merit: ?216 dBc/Hz

APPLICATIONS

GSM/EDGE base stations

PHS base stations

Pulse Doppler radar

Instrumentation and test equipment

Beam-forming/phased array systems