ADMV8420ACPZ

Overview

The ADMV8420ACPZ is a monolithic microwave integrated circuit (MMIC) tunable band-pass filter manufactured by Analog Devices Inc. It operates within a usable passband corner frequency range of 10 GHz to 21.7 GHz, with a center frequency (fCENTER) adjustable between 11.1 GHz and 19.6 GHz via an analog control voltage applied to the VFCTL pin ranging from 0 V to 15 V. The device features a 3 dB bandwidth of approximately 20% and provides wideband rejection of at least 20 dB. Key electrical specifications include a typical insertion loss of 5 dB, an input third-order intercept point (IP3) of 31 dBm, and an amplitude settling time of 200 ns. It is housed in a 24-lead, 4 mm × 4 mm RoHS-compliant Lead Frame Chip Scale Package (LFCSP).

Feature Summary

• Single-chip MMIC implementation providing a compact alternative to switched filter banks and cavity tuned filters.
• User-selectable passband frequency controlled by an analog voltage signal, enabling dynamic tuning capabilities.
• Minimal microphonics resulting from the monolithic design structure.
• Wideband rejection characteristics ensuring signal isolation outside the selected passband.

Applications

• Test and measurement equipment
• Military radar and electronic warfare systems
• Very small aperture terminal (VSAT) communications

Procurement Notes

Verify the specific ordering suffix when purchasing. The ACPZ designation indicates a standard tube package, while the -R5 suffix denotes a tape and reel configuration. Both variants share identical electrical performance and temperature ranges. Confirm that the required quantity aligns with the chosen packaging format to ensure proper handling and storage conditions are maintained during procurement.

Selection Notes

Select this component for applications requiring a dynamically adjustable band-pass filter in the V-band frequency range. Ensure the system design accommodates a 0 V to 15 V control voltage range for the VFCTL pin. Consider the thermal management requirements associated with the LFCSP package, as the exposed pad must be connected to RF and DC ground for optimal performance and reliability under specified operating temperatures.

Part Context

The ADMV8420 belongs to Analog Devices' portfolio of tunable RF filters designed to replace bulky mechanical tuning solutions. It is part of the ADMV84xx series, which includes other models like the ADMV8416 and ADMV8432 covering different frequency bands. This specific model targets higher frequency operations compared to lower-frequency counterparts, offering a specialized solution for advanced communication systems requiring precise frequency agility.

Replacement Considerations

Public confirmed substitute part numbers: ADMV8416ACPZ, ADMV8432ACPZ.

FAQ

How does the control voltage affect the center frequency?

Applying a center frequency control voltage (VFCTL) between 0 V and 15 V varies the fCENTER linearly from 11.1 GHz to 19.6 GHz.

What is the recommended interface for the RF pins?

The RFIN and RFOUT pins are dc-coupled and matched to 50 Ω. External voltages must not be applied to these pins.

How should the exposed pad be handled?

The exposed pad on the 24-lead LFCSP package must be connected to both RF and DC ground to ensure proper operation and thermal dissipation.