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.
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