ADL5380-30A-EVALZ

400 MHz to 6 GHz Quadrature Demodulator ADL5380 FEATURES Operating RF and LO frequency: 400 MHz to 6 GHz Input IP3 30 dBm @ 900 MHz 28 dBm @1900 MHz Input IP2: >65 dBm @ 900 MHz Input P1dB (IP1dB): 11.6 dBm @ 900 MHz Noise figure (NF) 10.9 dB @ 900 MHz 11.7 dB @ 1900 MHz Voltage conversion gain: ~7 dB Quadrature demodulation accuracy @ 900 MHz Phase accuracy: ~0.2° Amplitude balance: ~0.07 dB Demodulation bandwidth: ~390 MHz Baseband I/Q drive: 2 V p-p into 200 Ω Single 5 V supply FUNCTIONAL BLOCK DIAGRAM ENBL ADJ ADL5380 BIAS IHI ILO LOIP RFIN V2I RFIP QUADRATURE PHASE SPLITTER LOIN QHI Figure 1. APPLICATIONS Cellular W-CDMA/GSM/LTE Microwave point-to-(multi)point radios Broadband wireless and WiMAX GENERAL DESCRIPTION The ADL5380 is a broadband quadrature I-Q demodulator that covers an RF/IF input frequency range from 400 MHz to 6 GHz. With a NF = 10.9 dB, IP1dB = 11.6 dBm, and IIP3 = 29.7 dBm @ 900 MHz, the ADL5380 demodulator offers outstanding dynamic range suitable for the demanding infrastructure direct-conversion requirements. The differential RF inputs provide a well-behaved broadband input impedance of 50 Ω and are best driven from a 1:1 balun for optimum performance. Excellent demodulation accuracy is achieved with amplitude and phase balances of ~0.07 dB and ~0.2°, respectively. The demodulated in-phase (I) and quadrature (Q) differential outputs are fully buffered and provide a voltage conversion gain of ~7 dB. The buffered baseband outputs are capable of driving a 2 V p-p differential signal into 200 Ω. The fully balanced design minimizes effects from second-order distortion. The leakage from the LO port to the RF port is