The ADL5523 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 device offers 400 MHz to 4000 MHz operation, 0.8 dB noise figure and 21.5 dB gain. The ADL5523 uses single supply operation, with a voltage range of 3 V to 5 V. It includes an integrated active bias control circuit, integrated dc blocking capacitors and an adjustable bias circuit for low power applications.
The ADL5523 is a high‑performance GaAs pHEMT low‑noise amplifier covering 400 MHz to 4000 MHz. It integrates active bias control and de‑blocking capacitors, allowing single‑supply operation from 3 V to 5 V and requiring only a few external components.
The device delivers 21.5 dB gain and 0.8 dB noise figure at 900 MHz, with an OIP3 of 34 dBm and a P1dB of 21 dBm. It is offered in a compact 3 mm × 3 mm LFCSP package and operates from –40 °C to +85 °C. Detailed specifications, pin configuration, and typical performance graphs are provided.
| Frequency range | 400 MHz – 4000 MHz |
|---|---|
| Gain at 900 MHz | 21.5 dB |
| Noise figure at 900 MHz | 0.8 dB |
| OIP3 at 900 MHz | 34 dBm |
| P1dB at 900 MHz | 21 dBm |
| Supply voltage (single‑supply) | 3 V – 5 V |
| Supply current (3 V) | 30 mA (min) – 60 mA (max) |
| Operating temperature range | –40 °C to +85 °C |
It operates from 400 MHz up to 4000 MHz.
The gain is 21.5 dB at 900 MHz.
The device works from a single supply of 3 V to 5 V.
The noise figure is 0.8 dB at 900 MHz.