Hittite has introduced a family of new track-and-hold amplifiers (THA) that enable sampling capability up to 18 GHz, making it well suited for use at the front end of high-speed ADCs. The HMC661LC4B is a single rank THA that offers precision signal sampling over 18 GHz bandwidth, with 9- to 10-bit linearity at 1 Vp-p full scale level from DC to beyond 5 GHz input frequency. The HMC760LC4B offers similar performance figures over 5 GHz bandwidth, and has an increased dynamic range and optimised noise level of only 0,9 mV. Both devices are aimed at wideband microwave A-D conversion for radar, communications, and electronic surveillance systems or any wideband system requiring high-speed sampling, as well as test equipment and sampling scopes.
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