2.4 GHz to 4 GHz, Tunable Low-Pass Filter Data Sheet HMC881A FEATURES FUNCTIONAL BLOCK DIAGRAM Amplitude settling time: 200 ns (typical) HMC881A Wideband rejection: 35 dB Single-chip replacement for mechanically tuned designs GND GND RoHS compliant, 32-lead, 5 mm 5 mm LFCSP package RFIN RFOUT APPLICATIONS Testing and measurement equipment Military radar and electronic warfare/electronic countermeasures (ECMs) V FCTL Satellite communication and space Figure 1. Industrial and medical equipment GENERAL DESCRIPTION The HMC881A is a monolithic microwave integrated circuit alternative to physically large switched filter banks and cavity (MMIC) low-pass filter that features a user-selectable cutoff tuned filters. The HMC881A has excellent microphonics due to frequency. The cutoff frequency can be varied from 2.4 GHz to the monolithic design, and provides a dynamically adjustable 4 GHz by applying a single analog tuning voltage between 0 V solution in advanced communications applications. The low- and 14 V. This low-pass filter provides a low 3 dB insertion loss, pass tunable filter is packaged in a RoHS compliant 5 mm 16.5 dB return loss, and 1.35 f stopband attenuation of 5 mm LFCSP package. 3dB >20 dB. This tunable filter can be used as a much smaller Rev. 0 Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 2019 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com 17299-001HMC881A Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Typical Performance Characteristics ..............................................6 Applications ....................................................................................... 1 Theory of Operation .........................................................................9 Functional Block Diagram .............................................................. 1 Applications Information .............................................................. 10 General Description ......................................................................... 1 Typical Application Circuit ....................................................... 10 Revision History ............................................................................... 2 Evaluation PCB ........................................................................... 10 Specifications ..................................................................................... 3 Outline Dimensions ....................................................................... 11 Absolute Maximum Ratings ............................................................ 4 Ordering Guide .......................................................................... 11 ESD Caution .................................................................................. 4 Pin Configuration and Function Descriptions ............................. 5 REVISION HISTORY 4/2019Revision 0: Initial Version Rev. 0 Page 2 of 11