NORWOOD, Mass. (PRWEB) October 27, 2008
The ADF4350 integrated synthesizer provides designers with a single, low phase-noise solution supporting a continuous tuning range from 137.5 MHz to 4.4 GHz. Alternative approaches require as many as 10 individual VCO/PLL combinations. The VCO in ADI’s new ultra-broadband, fully integrated synthesizer features phase-noise of 137 dBc/Hz at a 1-MHz offset when operating at 2.1 GHz, and 155 dBc/Hz at a 1-MHz offset when operating at 137.5 MHz. This corresponds to an integrated rms phase error of 0.36 degrees at 2.1 GHz and 0.02 degrees at 137.5 MHz. The ADF4350 provides two RF output ports and enables the user to digitally program the output power level.
Unlike competing synthesizers, the ADF4350 supports both integer-N and fractional-N operating modes, allowing the user to determine the optimal spur and phase-noise performance via software controls for optimal performance and faster time to market.
New Dual Mixer Family Addresses High Dynamic Range Applications
ADI’s new mixer family includes the ADL5802 wideband active device, which provides high linearity and modest gain in the industry’s smallest package footprint. The family also includes the ADL5356, ADL5358 and ADL5360 band-specific passive mixers, which achieve high linearity and a low-noise figure with integrated IF (intermediate frequency) amplifiers and offer higher gain compared to other active and competing passive devices.
The ADL5802 dual active mixer achieves an IIP3 (third-order input intercept point) of 27 dBm and a single sideband noise figure of 11 dB with a conversion power gain of 1.5 dB within a 4 mm