ADL5390

www.DataSheet4U.com RF/IF Vector Multiplier ADL5390 FEATURES Matched pair of multiplying VGAs Broad frequency range 20 MHz to 2.4 GHz Continuous magnitude control from +5 dB to −30 dB Output third-order intercept 24 dBm Output 1 dB compression point 11 dBm Output noise floor −148 dBm/Hz Adjustable modulation bandwidth up to 230 MHz Fast output power disable Single-supply voltage 4.75 V to 5.25 V FUNCTIONAL BLOCK DIAGRAM VPRF QBBP OBBM VPS2 INMQ INPQ CMRF INPI INMI 04954-001 RFOP RFOM CMOP IBBP IBBM DSOP APPLICATIONS PA linearization and predistortion Amplitude and phase modulation Variable matched attenuator and/or phase shifter Cellular base stations Radio links Fixed wireless access Broadband/CATV RF/IF analog multiplexer Figure 1. GENERAL DESCRIPTION The ADL5390 vector multiplier consists of a matched pair of broadband variable gain amplifiers whose outputs are summed. The separate gain controls for each amplifier are linear-inmagnitude. If the two input RF signals are in quadrature, the vector multiplier can be configured as a vector modulator or as a variable attenuator/phase shifter by using the gain control pins as Cartesian variables. In this case, the output amplitude can be controlled from a maximum of +5 dB to less than –30 dB, and the phase can be shifted continuously over the entire 360° range. Since the signal paths are linear, the original modulation on the inputs is preserved. If the two signals are independent, then the vector multiplier can functio...