HMC890LP5E

Overview

The HMC890LP5E is a monolithic microwave integrated circuit (MMIC) tunable band-pass filter designed for surface-mount applications. It operates within a frequency range of 1 to 2 GHz, controlled by an analog voltage between 0 and 14 V. The device features a typical insertion loss of 9 dB and a return loss of 10 dB. Its 3 dB bandwidth is approximately 11%, while the 20 dB bandwidth is around 33%. The component supports a maximum input power of 10 dBm for linear operation and exhibits a tuning response time of 200 ns. It is housed in a 32-lead 5x5 mm SMT package.

Feature Summary

• User-selectable passband frequency via analog control voltages
• Fast tuning response with a 200 ns full-bandwidth transition time
• Excellent wideband rejection capabilities exceeding 30 dB
• Single-chip replacement for mechanically tuned filter designs

Applications

• Test & Measurement Equipment
• Military RADAR & EW/ECM Systems
• SATCOM & Space Communications
• Industrial & Medical Equipment

Procurement Notes

Verify component status before procurement as the datasheet explicitly marks the HMC890LP5E as OBSOLETE. Confirm availability through authorized distributors or Analog Devices directly. Ensure that any substitute components meet the required electrical specifications and pin compatibility for existing designs.

Selection Notes

Select this component when a compact alternative to switched filter banks or cavity-tuned filters is required. It is suitable for applications demanding dynamically adjustable center frequencies within the 1 to 2 GHz range. Consider the 9 dB insertion loss and 10 dB return loss when designing the signal chain budget.

Part Context

The HMC890LP5E belongs to the Hittite Microwave Corporation product line, which was acquired by Analog Devices Inc. It is part of a series of tunable band-pass filters designed for RF signal chains. The device utilizes a low-stress injection molded plastic package with matte tin lead finish, rated for MSL1 moisture sensitivity.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Due to the obsolete status, engineers should evaluate newer generation tunable filters from Analog Devices that offer compatible frequency ranges and interface requirements.

FAQ

How is the center frequency of the HMC890LP5E adjusted?

The center frequency is varied between 1 and 2 GHz by applying an analog tune voltage (Vfctl) between 0 and 14 V.

What is the maximum input power for linear operation?

The maximum input power for linear operation is specified as 10 dBm.

Does the HMC890LP5E require external DC biasing?

Yes, it requires two control voltages: Vfctl for center frequency and Vbwctl for bandwidth control, both ranging from 0 to 14 V.