Title :
A transistor-only circuit model of the autozeroing floating-gate amplifier
Author :
Hasler, Paul ; Kucic, Matt ; Minch, Bradley A.
Author_Institution :
Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
We developed an transistor-only version of our autozeroing floating-gate amplifier (AFGA). We use a subthreshold transistor to model the behavior of an electron-tunneling device, and we use another subthreshold transistor to model the behavior of pFET hot-electron injection. We have derived analytical models that completely characterize the amplifier and that are in good agreement with experimental data. This circuit is a bandpass filter, and behaves similarly to the AFGA with different operating parameters. Both the low-frequency and high-frequency cutoffs are controlled electronically, as is done in continuous-time filters. This circuit has a low-frequency cutoff at frequencies above 1 Hz, and therefore complements the operating regimes of the AFGA
Keywords :
amplifiers; band-pass filters; field effect transistor circuits; hot carriers; tunnelling; autozeroing floating-gate amplifier; bandpass filter; electron tunneling device; pFET hot electron injection; subthreshold transistor; transistor circuit model; Band pass filters; Capacitors; Circuits; Cutoff frequency; Output feedback; Parasitic capacitance; Secondary generated hot electron injection; Steady-state; Tunneling; Voltage;
Conference_Titel :
Circuits and Systems, 1999. 42nd Midwest Symposium on
Conference_Location :
Las Cruces, NM
Print_ISBN :
0-7803-5491-5
DOI :
10.1109/MWSCAS.1999.867232
