GENERAL DESCRIPTION
The ADL5387 is a broadband quadrature I/Q demodulator that covers an RF/IF input frequency range from 30 MHz to 2 GHz. With a NF = 13.2 dB, IP1dB = 12.7 dBm, and IIP3 = 32 dBm at 450 MHz, the ADL5387 demodulator offers outstanding dynamic range suitable for the demanding infrastructure direct-conversion requirements. The differential RF/IF inputs provide a well-behaved broadband input impedance of 50 Ω and are best driven from a 1:1 balun for optimum performance.

FEATURES
    Operating RF frequency 30 MHz to 2 GHz
    LO input at 2 × fLO 60 MHz to 4 GHz
    Input IP3: 31 dBm at 900 MHz
    Input IP2: 62 dBm at 900 MHz
    Input P1dB: 13 dBm at 900 MHz
    Noise figure (NF) 12.0 dB at 140 MHz 14.7 dB at 900 MHz
    Voltage conversion gain > 4 dB
    Quadrature demodulation accuracy Phase accuracy ~0.4° Amplitude balance ~0.05 dB
    Demodulation bandwidth ~240 MHz
    Baseband I/Q drive 2 V p-p into 200 Ω
    Single 5 V supply

APPLICATIONS
    QAM/QPSK RF/IF demodulators
    W-CDMA/CDMA/CDMA2000/GSM
    Microwave point-to-(multi)point radios
    Broadband wireless and WiMAX
    Broadband CATVs