Title :
Ku-band subsampling track-and-hold amplifier with 8 ENOB resolution
Author :
Morton, S.L. ; Cosand, A.E. ; Hitko, D.A. ; Baringer, C. ; Luh, L. ; Lin, C.-M. ; Jensen, J.F. ; Li, C.-M. ; Crampton, D.
Author_Institution :
Hughes Res. Labs., Malibu, CA, USA
fDate :
4/13/2006 12:00:00 AM
Abstract :
A wideband subsampling track-and-hold amplifier has been designed for input frequencies up to Ku-band and clock rates up to 2.5 GS/s. Circuits were fabricated in 1 μm InP SHBT technology. Spur-free dynamic range measured with two-tone input frequencies of 12.6 and 12.602 GHz and a 2.5 GS/s clock rate ranges from 53-69 dB at an input level of -1 dBFS for each tone. Signal-to-noise ratio (SNR) test results show that the master/slave (M/S) track-and-hold design provides 59 dB of SNR in a 1 GHz bandwidth at input frequencies up to at least 2.6 GHz. A single track-and-hold dissipates 1.5 W while the M/S configuration dissipates 2.5 W.
Keywords :
III-V semiconductors; heterojunction bipolar transistors; indium compounds; microwave amplifiers; sample and hold circuits; wideband amplifiers; 1 GHz; 1 micron; 1.5 W; 12.6 GHz; 12.602 GHz; 2.5 W; InP; Ku-band subsampling track-and-hold amplifier; SHBT technology; spur-free dynamic range; wideband amplifier;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20060150
