FEATURES

► Digitally tunable, multioctave, band-pass tuning

► 3 dB bandwidth: 9% ± 2%

► Low insertion loss: <4.5 dB typical

► Excellent rejection: 20 dB at 25% away from the fCENTER

► Great linearity (IP3): 40 dBm typical

► Single chip replacement for discrete solutions

► 32-terminal LGA

APPLICATIONS

► Land mobile radio

► Test and measurement equipment

► Military radar and electronic warfare and electronic countermeasures

► Satellite communications

► Industrial and medical equipment

GENERAL DESCRIPTION

The ADMV80521

is a RF filter that features a digitally selectable

frequency of operation. The device has three band-pass filters

(BPFs) that span across three specified bands from 30 MHz to 520

MHz.

The center frequency (fCENTER) of operation can be adjusted using

an 8-bit value (256 states) that incorporates a patented interpolation

technique. The typical bandwidth (3 dB) is 9% and adjustability

is ±2%. The insertion loss is typically less than 4.5 dB and the

rejection is 20 dB at 25% away from the fCENTER, which is ideally

suited for minimizing system harmonics. Additionally, the flexible

architecture incorporates a bypass configuration with a low insertion

loss of <1 dB.

This tunable filter can be used as a smaller alternative to large

switched filter banks and cavity tuned filters, and this device provides a dynamically adjustable solution in advanced communications applications.