Title :
The Role of Feedback Resistors and TID Effects in the ASET Response of a High Speed Current Feedback Amplifier
Author :
Roig, Fabien ; Dusseau, L. ; Ribeiro, P. ; Auriel, G. ; Roche, Nicholas J.-H ; Privat, A. ; Vaille, J.-R. ; Boch, J. ; Saigne, F. ; Marec, R. ; Calvel, P. ; Bezerra, F. ; Ecoffet, R. ; Azais, Bruno
Author_Institution :
Commissariat a l´Energie Atomique et aux Energies Alternatives, CEA (Gramat), Gramat, France
Abstract :
The influence of external circuit designs on ASET shapes in a high speed current feedback amplifier (CFA) (AD844) is investigated by means of the pulsed laser single event effect (PLSEE) simulation technique. Changes of the feedback resistors modify circuit´s electrical parameters such as closed-loop gain and bandwidth, affecting amplifier stability and so ASET shapes. Qualitative explanations based on general electronic rules and feedback theories enable the understanding of a CFA operation establishing a correlation between the evolution of external feedback resistor values and ASET parameters. TID effects on the ASET sensitivity in AD844 CFA are also investigated in this work highlighting different behaviors according to the impacted bipolar transistor in the integrated circuit.
Keywords :
circuit stability; feedback amplifiers; radiation hardening (electronics); resistors; AD844 CFA; ASET response; ASET sensitivity; ASET shapes; PLSEE; TID effects; amplifier stability; analog single event transients; bipolar transistor; circuit electrical parameters; closed-loop gain; external circuit designs; feedback resistors; feedback theory; general electronic rules; high speed current feedback amplifier; pulsed laser single event effect simulation technique; total ionizing dose; Bipolar integrated circuits; Feedback amplifiers; Ionizing radiation; Resistors; Single event transients; Transient analysis; Transient response; Bipolar analog integrated circuits; ionizing dose; single event transient; transient analysis; transient response;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2014.2369347
