This page describes a possible prototype using the new ADS5463 FADC operating at (up to) 500MSPS. Back to [[Fast_WFDs]] ''''Clocking''' The clock input is differential, with self-biasing DC levels. Best driven with 50% duty cycle, AC-coupled differential input. Options: * 1GHz sine wave on-board oscillator, PECL divide-by-two * External 500MHz or 1GHz sine wave input * PLL frequency multiplier from (i.e.) 10MHz reference input * [http://www.vectron.com Vectron] i.e. [http://www.vectron.com/products/xo/co286w.htm CO-286W] * '''As of 4/5/07:'' CO-286W 2-4pcs 1,620.00ea; 100pcs @ 444.00 12 wks lead time * Crystek [http://www.crystek.com/vcxo/vcxo-description.htm#CVCSO-914 CVCS0-914] 1GHz SAW. ~$115 at Digi-Key. Sine output. ''''Analog Input''' The [http://focus.ti.com/docs/prod/folders/print/ths4509.html THS4509] looks like a good bet.