Frequency

MMIC is space-saving alternative to filter banks

14th July 2021
Mick Elliott

Distributor Mouser Electronics is now shipping the ADMV8818 digitally tuneable filter from Analog Devices.

The filter is a fully monolithic microwave integrated circuit (MMIC) with a digitally selectable frequency of operation, offering a space-efficient alternative to large, switched filter banks and cavity-tuned filters.

It suits applications in industrial instrumentation and measurement, aerospace, defence and medical.

The filter provides a dynamically adjustable solution for advanced communications applications.

Four independently controlled high-pass filters and four independently controlled low-pass filters span the 2 GHz to 18 GHz frequency range.

The flexible architecture of the ADMV8818 allows the 3 dB cutoff frequency (f3dB) of the high- and low-pass filters to be controlled independently to generate up to 4 GHz of bandwidth.

Also available to order from Mouser, the ADMV8818-EVALZ evaluation board incorporates the ADMV8818 chip as well as a negative voltage generator, low-dropout (LDO) regulators, and an interface to the EVAL-SDP-CS1Z (SDP-S) system demonstration platform (SDP) to allow simple and efficient evaluation.

The negative voltage generator and LDO regulators allow the ADMV8818 to be powered by either the 5 V USB supply voltage from the PC via the SDP-S or two external power supplies.

The SDP-S controller enables the user to interface with the ADMV8818 SPI through the ADI Analysis | Control | Evaluation (ACE) software.

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