ADL5205

Data Sheet Dual, 35 dB Range, 1 dB Step Size DGA ADL5205 FEATURES Dual, independent, digitally controlled gain amplifier (DGA) −9 dB to +26 dB gain range 1 dB step size, ±0.2 dB accuracy at 200 MHz 100 Ω differential input resistance 10 Ω differential output resistance 1.2 dB change in noise figure for first 12 dB of gain reduction Output third-order intercept (OIP3): 48.5 dBm at 200 MHz, 5 V, high performance mode −3 dB bandwidth: 1700 MHz typical in high performance mode Multiple control interface options Parallel 6-bit control interface with latch Serial peripheral interface (SPI) with fast attack Gain step up/down interface Wide input dynamic range Low power mode Power-down control Single 3.3 V or 5 V supply operation 40-lead, 6 mm × 6 mm LFCSP package APPLICATIONS Differential analog-to-digital converter (ADC) drivers High intermediate frequency (IF) sampling receivers High output power IF amplification Instrumentation FUNCTIONAL BLOCK DIAGRAM SIDE A SPI WITH FA, PARALLEL WITH LATCH, UP/DOWN PWUPA VPOS LOGIC VINA+ 0dB TO 23dB 100Ω VINA– MODE0 MODE1 PM CONTROL CIRCUITRY 14dB TO 26dB VOUTA– 10Ω VOUTA+ VINB+ 0dB TO 23dB 100Ω VINB– 14dB TO 26dB VOUTB– 10Ω VOUTB+ LOGIC ADL5205 SIDE B PWUPB SPI WITH FA, PARALLEL WITH LATCH, UP/DOWN Figure 1. GND 13488-001 GENERAL DESCRIPTION The ADL5205 is a digitally controlled, wide bandwidth, variable gain dual amplifier (DGA) that provides precise gain control, high output third-order intercept (OIP3) and...