ADL5387 Datasheet | Analog Devices

FEATURES Operating RF frequency 30 MHz to 2 GHz LO input at 2 × f LO 60 MHz to 4 GHz Input IP3: 31 d Bm at 900 MHz Input IP2: 62 d Bm at 900 MHz Input P1d B: 13 d Bm at 900 MHz Noise figure (NF) 12.0 d B at 140 MHz 14.7 d B at 900 MHz Voltage conversion gain > 4 d B Quadrature demodulation accuracy Phase accuracy ~0.4° Amplitude balance ~0.05 d B 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 Wi MAX Broadband CATVs 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 d B, IP1d B = 12.7 d Bm, and IIP3 = 32 d Bm 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 wellbehaved broadband input impedance of 50 Ω and are best driven from a 1:1 balun for optimum performance. Ultrabroadband operation is achieved with a divide-by-2 method for local oscillator (LO) quadrature generation. Over a wide range of LO levels, excellent demodulation accuracy is achieved with amplitude and phase balances ~0.05 d B and ~0.4°, respectively. The demodulated in-phase (I) and quadrature (Q) differential outputs are fully buffered and provide a voltage conversion gain of >4 d B. The buffered baseband outputs are capable of driving a 2 V p-p differential signal into 200 Ω. Rev. B Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks...