ADL5330

www.DataSheet4U.com a Preliminary Technical Data FEATURES Voltage-Controlled Amplifier/Attenuator Operating Frequency 1 MHz to 3 GHz Optimized for Controlling Output Power High Linearity: OIP3 31 dBm @ 900 MHz Output Noise Floor -150 dBm/Hz @ 900 MHz Fully-Balanced Differential Signal Path Differential Input at 50 Ω Wide Gain-Control Range: -34 dB to +22 dB @ 900 MHz Linear-in-dB Gain Control Function, 20 mV/dB Single Supply 4.75 – 6 V GAIN ENBL 1 MHz - 3 GHz VGA with 60dB Gain Control Range ADL5330 VPS2 VPS2 VPS2 VPS2 VPS2 VPS1 GAIN CONTROL COM1 COM2 RF I/P RF input, 50Ω INHI INLO Input gm Stage Continuously Variable Attenuator O/P OPHI (TZ) Stage OPLO BALUN RF to PA COM1 APPLICATIONS Output Power Control for Wireless Infrastructure BIAS & VREF COM2 VPS1 VREF VPS2 IPBS OPBS COM2 COM2 COM2 Figure 1. Functional Block Diagram PRODUCT DESCRIPTION The ADL5330 is a high-performance voltage-controlled variablegain amplifier/attenuator, for use up to 3 GHz. The signal path is fully differential; the balanced structure minimizes distortion, and reduces the risk of spurious feed-forward at low gains and high frequencies due to substrate coupling. While operation between a balanced source and load is recommended, a single-sided input is internally converted to differential from. The input impedance is 50-Ω from INHI to INLO. The outputs will usually be coupled into a 50-Ω grounded load via a 1:1 balun. However, the output pins, OPHI and OPLO, may also be us...