ADL8121ACPZN

RF Amplifiers Overview

The ADL8121ACPZN is a GaAs pHEMT MMIC low noise amplifier from Analog Devices Inc., operating within a frequency range of 25 MHz to 12 GHz. It features a typical gain of 16.5 dB and a low noise figure of 2.5 dB. The device delivers a typical output third-order intercept point (OIP3) of 36 dBm and a saturated output power (PSAT) of 21.5 dBm. Powered by a single 5 V supply, it draws 95 mA with a maximum power dissipation of 1.25 W. Operating temperatures span from -40°C to +85°C. The component is housed in a compact 2.0 mm x 2.0 mm LFCSP-6 package.

RF Amplifiers Feature Summary

• Utilizes GaAs pHEMT technology for high linearity and low noise performance across a wide bandwidth.
• Features internal input and output matching to 50 ohms, simplifying circuit design.
• Supports single positive supply operation through an external bias resistor on the RBIAS pin.
• Provides high saturation output power suitable for use as a local oscillator driver.

RF Amplifiers Applications

• Test and measurement instrumentation
• Military communication systems
• Telecommunications infrastructure
• Military radar systems

RF Amplifiers Procurement Notes

Verify the specific suffix R7 indicates reel packaging when ordering. Confirm RoHS compliance status directly with the manufacturer or authorized distributors. Ensure the LFCSP-6 footprint matches your PCB layout requirements. Check current availability as supply may be limited. Validate that the 5V single-supply biasing scheme aligns with your system power architecture.

RF Amplifiers Selection Notes

Select this component for applications requiring broadband amplification up to 12 GHz with minimal signal degradation. The integrated 50-ohm matching reduces external component count. Consider the 2.0 mm x 2.0 mm package size for space-constrained designs. Evaluate the 95 mA current draw against total system power budgets. Use the ADL8121-EVALZ board for initial performance validation before final integration.

RF Amplifiers Part Context

This part belongs to the ADL8121 series of RF amplifiers manufactured by Analog Devices Inc. It is classified under Wireless & RF Integrated Circuits. The device is a monolithic microwave integrated circuit (MMIC) designed for high-performance analog signal processing. It is distinct from other variants like the ADL8122, which serves different functional roles within the same product family.

RF Amplifiers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Engineers should consult Analog Devices technical support for direct replacements or cross-references compatible with the LFCSP-6 package and 12 GHz operational range.

RF Amplifiers FAQ

How is the bias current controlled?

The IDQ is set using an external resistor connected to the RBIAS pin, enabling single positive supply operation.

What is the typical noise figure?

The typical noise figure is 2.5 dB over the frequency range of 25 MHz to 10 GHz.

Can this amplifier drive mixers?

Yes, the 21.5 dBm saturated output power allows it to function as a local oscillator driver for various mixers.