HMC891ALP5ETR

Overview

The HMC891ALP5ETR is a monolithic microwave integrated circuit (MMIC) tunable band-pass filter manufactured by Analog Devices Inc. It operates within a center frequency range of 1.95 GHz to 3.4 GHz, controlled by an analog voltage between 0 V and 14 V applied to the VFCTL pin. The device features a 3 dB bandwidth of approximately 9% and a 20 dB bandwidth of approximately 23%. Key electrical specifications include an insertion loss of 8 dB, return loss of 10 dB, and input third-order intercept point (IP3) of 32 dBm at 20 dBm input power. It utilizes a 32-lead, 5 mm x 5 mm LFCSP package with an exposed pad for thermal management.

Feature Summary

• Single-chip MMIC design replacing mechanically tuned filters
• User-selectable passband frequency via analog control voltages
• Low amplitude settling time for dynamic tuning applications
• High re-entry rejection for improved signal isolation

Applications

• Testing and measurement equipment
• Military radar systems
• Electronic warfare and electronic countermeasure (ECM)
• Satellite communication and space applications
• Industrial and medical equipment

Procurement Notes

Verify the specific ordering suffix to confirm the reel packaging configuration required for automated assembly processes. Ensure that the component meets RoHS compliance standards as specified in the manufacturer's documentation. Confirm the operating temperature range aligns with the intended environmental conditions of the final system design before procurement.

Selection Notes

Select this component when a compact, electronically tunable band-pass filter is required for frequencies between 1.95 GHz and 3.4 GHz. Consider the 32-lead LFCSP package dimensions for PCB layout constraints. Evaluate the need for independent or coupled control of center frequency and bandwidth based on the application's tuning requirements and available control voltage ranges.

Part Context

The HMC891ALP5ETR belongs to the HMC891 series of tunable band-pass filters from Analog Devices. It serves as a direct replacement for larger, mechanically tuned filter banks in microwave circuits. The device is part of a family designed to provide dynamically adjustable solutions for advanced communications and radar systems requiring precise frequency selection.

Replacement Considerations

The HMC891ALP5E is the non-reel version of this component. Verify if the tape-and-reel format is necessary for manufacturing. No other direct substitute part numbers are documented in the provided datasheet.

FAQ

How are the center frequency and bandwidth controlled?

The center frequency is controlled by the VFCTL pin and the bandwidth by the VBWCTL pin. Both pins accept analog voltages between 0 V and 14 V. Typically, these voltages are tied together for standard operation.

What is the maximum input power for linear operation?

The maximum input power for linear operation is 10 dBm. The absolute maximum RF input power rating is 27 dBm.

What is the typical amplitude settling time?

The amplitude settling time is 200 ns, defined as the time to settle to minimum insertion loss within 0.5 dB of the static insertion loss.