GENERAL DESCRIPTION

The ADF41020 frequency synthesizer can be used to implement local oscillators as high as 18 GHz in the up conversion and down conversion sections of wireless receivers and transmitters. It consists of a low noise, digital phase frequency detector (PFD), a precision charge pump, a programmable reference divider, and high frequency programmable feedback dividers (A, B, and P). A complete phase-locked loop (PLL) can be implemented if the synthesizer is used with an external loop filter and voltage controlled oscillator (VCO).

FEATURES

18 GHz maximum RF input frequency

Integrated SiGe prescaler

Software compatible with the ADF4106/ADF4107/ADF4108

family of PLLs

2.85 V to 3.15 V PLL power supply

Programmable dual-modulus prescaler

8/9, 16/17, 32/33, 64/65

Programmable charge pump currents

3-wire serial interface

Digital lock detect

Hardware and software power-down mode

4000 V HBM/1500 V CDM ESD performance

APPLICATIONS

Microwave point-to-point/multipoint radios

Wireless infrastructure

VSAT radios

Test equipment

Instrumentation