The ADL5387 is a quadrature demodulator with an operating RF frequency range of 50 MHz to 2 GHz. It offers high input IP3, IP2, and P1dB, low noise figure, and voltage conversion gain. The demodulator provides accurate phase and amplitude balance, making it suitable for applications such as QAM/QPSK RF/IF demodulators, W-CDMA/CDMA/CDMA2000/GSM, microwave point-to-(multi)point radios, broadband wireless and WiMAX, and broadband CATVs.
The ADL5387 is a broadband quadrature I/Q demodulator that operates from 50 MHz to 2 GHz. It provides a single‑supply design (4.75 V‑5.25 V) and delivers a voltage conversion gain greater than 4 dB, with excellent phase (≈0.4°) and amplitude (≈0.05 dB) balance.
The device offers high dynamic range with an input 1 dB compression point of 13 dBm, IIP3 of 31 dBm at 900 MHz, and a typical noise figure of 14.7 dB. Pin‑out, functional block diagram, and typical performance graphs are included for design integration.
| Operating RF Frequency Range | 50 MHz to 2 GHz |
|---|---|
| LO Input Frequency Range | 0.1 GHz to 4 GHz |
| Supply Voltage | 4.75 V to 5.25 V |
| Voltage Conversion Gain | > 4 dB |
| Input 1 dB Compression Point (IP1dB) | 13 dBm |
| Third‑Order Input Intercept (IIP3) @ 900 MHz | 31 dBm |
| Noise Figure @ 900 MHz | 14.7 dB |
The ADL5387 operates from a single 4.75 V to 5.25 V supply.
The typical noise figure at 900 MHz is 14.7 dB.
The input 1 dB compression point at 900 MHz is 13 dBm.
External LO input is at 2×LO frequency, and a single‑ended LO at 0 dBm can be applied through a 1000 pF capacitor.