Author/Authors :
Sanuy، نويسنده , , A. and Delagnes، نويسنده , , E. and Gascon، نويسنده , , D. and Sieiro، نويسنده , , X. and Bolmont، نويسنده , , J. Sanchez-Corona، نويسنده , , P. and Feinstein، نويسنده , , F. and Glicenstein، نويسنده , , J-F. and Naumann، نويسنده , , C.L. and Nayman، نويسنده , , P. and Ribَ، نويسنده , , M. and Tavernet، نويسنده , , J-P. and Toussenel، نويسنده , , F. and Vincent، نويسنده , , P. and Vorobiov، نويسنده , , S.، نويسنده ,
Abstract :
The NECTAr collaborationʹs FE option for the camera of the CTA is a 16 bits and 1–3 GS/s sampling chip based on analog memories including most of the readout functions. This works describes the input amplifiers of the NECTAr ASIC. A fully differential wideband amplifier, with voltage gain up to 20 V/V and a BW of 400 MHz. As it is impossible to design a fully differential OpAmp with an 8 GHz GBW product in a 0.35 CMOS technology, an alternative implementation based on HF linearized transconductors is explored. The output buffer is a class AB miller operational amplifier, with special non-linear current boost.
