2 GHz to 18 GHz, Digitally Tunable, High-Pass and Low-Pass Filter

The ADMV8818-EP is a fully monolithic microwave integrated circuit (MMIC) that features a digitally selectable frequency of operation. The device features four independently controlled high-pass filters (HPFs) and four independently controlled low-pass filters (LPFs) that span the 2 GHz to 18 GHz frequency range.

The flexible architecture of the ADMV8818-EP allows the 3 dB cutoff frequency (f3dB) of the high-pass and low-pass filters to be controlled independently to generate up to 4 GHz of bandwidth. The digital logic control on each filter is 4 bits wide (16 states) and controls the on-chip reactive elements to adjust the f3dB. The typical insertion loss is 9 dB, and the wideband rejection is 35 dB, which is ideally suited for minimizing system harmonics.

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.

APPLICATIONS

* Test and measurement equipment

* Military radar, electronic warfare, and electronic countermeasures

* Satellite communications and space

* Industrial and medical equipment

* Digitally tunable, multioctave, high-pass and low-pass tuning

* Independent 3 dB frequency control for up to 4 GHz of bandwidth

* Optimal wideband rejection: 35 dB

* Single chip replacement for discrete filter banks

* Compact 9 mm × 9 mm, 56-terminal LGA package