The paper describes a Track and Hold Amplifier (THA) suitable for RF sampling and Software Defined Radio receivers where high speed and high resolution are required. The reported THA is based on two main techniques: one for minimizing the differential droop rate and one for improving the HD3 in track mode. Measurements results show that the adopted solutions are both effective. In the desired input band around 1GHz, at the desired sub-sampling frequency (0.5GS/s) the THA provides a linearity compatible with 12-bit (Spurious Free Dynamic Range, SFDR). Moreover at the maximum achievable sampling frequency (1.5GS/s) the performances are quite constant and the resolution is compatible with 11-bit (SFDR) up to an input frequency of 1GHz.
A 11-bit Track and Hold Amplifier in 0.25 µm SiGe BiCMOS for RF sampling receivers / Cannone, F; Avitabile, Gianfranco; Coviello, G.. - (2013), pp. 792-795. (Intervento presentato al convegno IEEE 56th International Midwest Symposium on Circuits and Systems, MWSCAS 2013 tenutosi a Columbus, OH nel August 4-7, 2013) [10.1109/MWSCAS.2013.6674768].
A 11-bit Track and Hold Amplifier in 0.25 µm SiGe BiCMOS for RF sampling receivers
AVITABILE, Gianfranco;Coviello G.
2013-01-01
Abstract
The paper describes a Track and Hold Amplifier (THA) suitable for RF sampling and Software Defined Radio receivers where high speed and high resolution are required. The reported THA is based on two main techniques: one for minimizing the differential droop rate and one for improving the HD3 in track mode. Measurements results show that the adopted solutions are both effective. In the desired input band around 1GHz, at the desired sub-sampling frequency (0.5GS/s) the THA provides a linearity compatible with 12-bit (Spurious Free Dynamic Range, SFDR). Moreover at the maximum achievable sampling frequency (1.5GS/s) the performances are quite constant and the resolution is compatible with 11-bit (SFDR) up to an input frequency of 1GHz.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
