HMC891ALP5E is a monolithic microwave integrated circuit (MMIC) band-pass filter that features a user-selectable pass band frequency. The 3dB filter bandwidth is approximately 9% and the 20dB filter bandwidth is approximately 23%. The center frequency (fCENTER) can be varied between 1.95GHz and 3.4GHz by applying an analog tune voltage between 0V and 14V. This tuneable filter can be used as a smaller alternative to physically large switched filter banks and cavity tuned filters. It has excellent microphonics due to the monolithic design, and provides a dynamically adjustable solution in advanced communications applications. It is used in application such as testing and measurement equipment, military radar and electronic warfare/electronic counter measure (ECM), satellite communication and space, industrial and medical equipment etc.