HMC897LP4E

Overview

The HMC897LP4E is a monolithic microwave integrated circuit (MMIC) bandpass filter featuring user-selectable passband frequency. It operates within a center frequency range of 9 to 19 GHz, controlled by an analog voltage between 0 and 14 V. The device exhibits a typical 3 dB bandwidth of approximately 18% and a 20 dB bandwidth of roughly 35%. Key electrical specifications include a maximum insertion loss of 6.5 dB, a return loss of 9.5 dB, and an input IP3 of 30 dBm. It is housed in a 24-lead 4x4 mm surface-mount package and supports an operating temperature range from -40 °C to +85 °C.

Feature Summary

• Provides fast tuning response with dynamically adjustable center frequency via analog control voltage.
• Delivers excellent wideband rejection characteristics suitable for advanced communications applications.
• Functions as a single-chip replacement for mechanically tuned designs, offering reduced size compared to switched filter banks.

Applications

• Test & Measurement Equipment
• Military RADAR & EW/ECM Systems
• SATCOM & Space Applications

Procurement Notes

Verify component authenticity through authorized Analog Devices channels or certified distributors. Confirm the specific lot number against manufacturer records to ensure traceability. Check for RoHS compliance status and verify that the package marking matches the official datasheet requirements. Ensure handling precautions are followed due to electrostatic sensitivity.

Selection Notes

Select this component when a compact, tunable bandpass solution is required for frequencies between 9 and 19 GHz. Ensure the design accommodates a control voltage range of 0 to 14 V and provides adequate thermal management for the specified power dissipation. Verify that the driver circuit meets the current sourcing/sinking requirements for optimal tuning speed and phase noise performance.

Part Context

The HMC897LP4E belongs to the Hittite Microwave Corporation product line, now part of Analog Devices Inc. It is designed as a direct replacement for physically large cavity-tuned filters or switched filter banks. The device utilizes MMIC technology to provide high reliability and microphonics immunity in a small surface-mount footprint.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Designers should evaluate mechanical compatibility and electrical parameter alignment if considering alternative tunable filters from other manufacturers.

FAQ

What is the relationship between the control voltage and the center frequency?

The center frequency can be varied between 9 and 19 GHz by applying an analog tune voltage between 0 and 14 V.

How does the device handle residual phase noise?

Optimal residual phase noise performance requires the use of a low-noise driver circuit. The typical residual phase noise at a 100 kHz offset is -160 dBc/Hz.

What are the absolute maximum ratings for the frequency control voltage?

The absolute maximum rating for the Frequency Control Voltage (Vfctl) is -0.5 to +15 V.