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 device operates from 400 MHz to 4000 MHz, has a noise figure of 0.8 dB at 900 MHz, and can provide up to 20.8 dB of gain.
The ADL5521 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 easy tuning with only a few external components.
The device is offered in a compact 3 mm × 3 mm LFCSP package and operates from –40 °C to +85 °C. Typical performance includes 20.8 dB gain, 0.8 dB noise figure, 37 dBm OIP3, and 21.8 dBm P1dB at 900 MHz.
| Frequency range | 400 MHz – 4000 MHz |
|---|---|
| Noise figure (900 MHz) | 0.8 dB |
| Gain (900 MHz) | 20.8 dB |
| Output third‑order intercept (OIP3) at 900 MHz | 37 dBm |
| 1 dB compression point (P1dB) at 900 MHz | 21.8 dBm |
| Supply voltage | 3 V – 5 V |
| Supply current (typical) | 30 mA – 60 mA |
| Operating temperature range | –40 °C to +85 °C |
The ADL5521 operates from a single supply of 3 V to 5 V.
The typical noise figure at 900 MHz is 0.8 dB.
It provides 20.8 dB of gain at 900 MHz.
The device can operate up to +85 °C.