400 MH TO 4000 MH Low Noise Amplifier

The ADL5521 is a high performance GaAs pHEMT low noise amplifier. It provides high gain and low noise figure for single-downconversion IF sampling receiver architectures as well as direct-downconversion receivers.

The ADL5521 provides a high level of integration by incorporating the active bias and dc blocking capacitors, making it very easy to use while not sacrificing design flexibility.

The ADL5521 is easy to tune, requiring only a few external components. The device can support operation from 3 V to 5 V, and the current draw can be adjusted with the external bias resistor for applications requiring low power consumption.

The ADL5521 comes in a compact, thermally enhanced, 3 mm × 3 mm LFCSP and operates over the temperature range of −40°C to +85°C.

A fully populated evaluation board is also available.

* Operation from 400 MHz to 4000 MHz

* Noise figure of 0.8 dB at 900 MHz

* Requires few external components

* Integrated active bias control circuit

* Integrated dc blocking capacitors

* Adjustable bias for low power applications

* Single-supply operation from 3 V to 5 V

* Gain of 20.8 dB at 900 MHz

* OIP3 of 37.0 dBm at 900 MHz

* P1dB of 21.8 dBm at 900 MHz

* Small footprint LFCSP

* Pin-compatible version with 21.5 dB gain available