The ADL5561 is a 2.9 GHz ultralow distortion RF/IF differential amplifier from Analog Devices. It features low supply current, pin-strappable gain adjust, differential or single-ended input to differential output, low noise input stage, and more.
The ADL5561 is a 2.9 GHz ultralow‑distortion RF/IF differential amplifier optimized for high‑speed ADC drivers, SAW filter interfacing, and gain‑block applications. It offers three selectable gain settings (6 dB, 12 dB, 15.5 dB) and operates from a single 3 V–3.6 V supply while consuming only 40 mA quiescent current.
The device is supplied in a 16‑lead LFCSP package, supports a wide temperature range (‑40 °C to +85 °C), and provides low‑noise performance (2.1 nV/√Hz) with excellent distortion characteristics across a broad frequency range. Detailed specifications, pin descriptions, and typical performance graphs are included.
| 3 dB Bandwidth (Av = 6 dB) | 2.9 GHz |
|---|---|
| Supply Voltage | 3.3 V – 3.6 V |
| Quiescent Current (ENBL high) | 40 mA |
| Gain Accuracy (Av = 6 dB) | ±0.15 dB |
| Input Noise (Av = 6 dB) | 2.1 nV/√Hz |
| Slew Rate (Av = 15.5 dB) | 9.8 V/ns |
The device operates from 3.3 V to 3.6 V.
When enabled, the ADL5561 draws about 40 mA of quiescent current.
The amplifier provides three gain levels: 6 dB, 12 dB, and 15.5 dB (pin‑strappable).
At 6 dB gain the 3 dB bandwidth is 2.9 GHz.