The HMC882A is a monolithic microwave integrated circuit
(MMIC) low-pass filter that features a user-selectable cutoff
frequency (f3dB). The cutoff frequency can be varied from
3.95 GHz to 6.9 GHz by applying a single analog tuning voltage
between 0 V and 14 V. This low-pass filter provides a low 3 dB
insertion loss, 13 dB return loss, and >20 dB stopband attenuation
at 1.28 × f3dB GHz. This tunable filter can be used as a much
smaller alternative to physically large switched filter banks and
cavity tuned filters. The HMC882A has excellent microphonics
due to the monolithic design and low residual phase noise of
−165 dBc/Hz, and provides a dynamically adjustable solution in
advanced communications applications. The low-pass tunable
filter is packaged in a RoHS compliant, 5 mm × 5mm LFCSP
package.
