A low-power 6GS/s track and hold circuit implemented with antimonide based compound semiconductor HBTs

A track-and-hold (T/H) circuit which was implemented with antimonide based compound semiconductor (ABCS) HBTs operated at 6 GS/s and consumed 478 mW. With a 600 MHz, 300 mV peak-to-peak input, the fundamental to 3/sup rd/ harmonic ratio was measured to be 43 dB. It represents a power saving of at least a factor of 2 for the T/Hs of similar performance as compared with any other semiconductor technology.