Now showing items 1-6 of 6

    • 360 nW gate-driven ultra-low voltage CMOS linear transconductor with 1 MHz bandwidth and wide input range 

      Rico-Aniles, Héctor Daniel; Ramírez-Angulo, Jaime; López Martín, Antonio Upna; González Carvajal, Ramón (IEEE, 2020)   Artículo / Artikulua  OpenAccess
      A low voltage linear transconductor is introduced. The circuit is a pseudo differential architecture that operates with ±0.2V supplies and uses 900nA total biasing current. It employs a floating battery technique to achieve ...
    • Energy-efficient amplifiers based on quasi-floating gate techniques 

      López Martín, Antonio Upna; Garde Luque, María Pilar Upna; Algueta-Miguel, Jose M. Upna; Beloso Legarra, Javier; González Carvajal, Ramón; Ramírez-Angulo, Jaime (MDPI, 2021)   Artículo / Artikulua  OpenAccess
      Energy efficiency is a key requirement in the design of amplifiers for modern wireless applica-tions. The use of quasi-floating gate (QFG) transistors is a very convenient approach to achieve such energy efficiency. We ...
    • Power efficient simple technique to convert a reset-and-hold into a true-sample-and-hold using an auxiliary output stage 

      Rico-Aniles, Héctor Daniel; Ramírez-Angulo, Jaime; López Martín, Antonio Upna Orcid; González Carvajal, Ramón; Rocha-Pérez, José Miguel; Garde Luque, María Pilar Upna Orcid (IEEE, 2020)   Artículo / Artikulua  OpenAccess
      A technique to implement true-sample-and-hold circuits that hold the output for almost the entire clock cycle without resetting to zero is introduced, alleviating the slew rate requirement on the op-amp. It is based on a ...
    • Pseudo-three-stage Miller op-amp with enhanced small-signal and large-signal performance 

      Paul, Anindita; Ramírez-Angulo, Jaime; López Martín, Antonio Upna; González Carvajal, Ramón; Rocha-Pérez, José Miguel (IEEE, 2019)   Artículo / Artikulua  OpenAccess
      A simple technique to implement highly power efficient class AB-AB Miller op-amps is presented in this paper. It uses a composite input stage with resistive local common mode feedback that provides class AB operation to ...
    • Super class AB RFC OTA with adaptive local common-mode feedback 

      Garde Luque, María Pilar Upna Orcid; López Martín, Antonio Upna Orcid; Carvajal, Ramón G.; Ramírez-Angulo, Jaime (Institution of Engineering and Technology, 2018)   Artículo / Artikulua  OpenAccess
      A super class AB recycling folded cascode operational transconductance amplifier is presented. It employs local common-mode feedback using two matched tuneable active resistors, allowing to adapt the amplifier to different ...
    • Super-gain-boosted AB-AB fully differential Miller op-amp with 156dB open-loop gain and 174MV/V MHZ pF/uW figure of merit in 130nm CMOS technology 

      Paul, Anindita; Ramírez-Angulo, Jaime; Díaz Sánchez, Alejandro; López Martín, Antonio Upna; González Carvajal, Ramón; Li, Frank X. (IEEE, 2021)   Artículo / Artikulua  OpenAccess
      A fully differential Miller op-amp with a composite input stage using resistive local common-mode feedback and regulated cascode transistors is presented here. High gain pseudo-differential auxiliary amplifiers are used ...