An Auto-Zeroing Current-Starved Floating-Gate band pass filter

In this paper we present Auto-Zeroing Current-Starved Floating-Gate Amplifier(AZCSA). In addition to gain, the amplifier allows frequency band adjustment, suited for designing time-continuous analog filters. The Auto-Zeroing Current-Starved Floating-Gate Amplifier(AZCSA) is based on two previously presented floating-gate amplifiers. The AZCSA uses the advantages of these two amplifiers regarding the frequency band adjustment to improve the possibility of adjusting the lowest and highest cut-off frequencies. The AZCSA enjoys low component spread and compactness, containing only minimum size transistors and capacitors. The simulations presented in this paper are valid for the 90nm CMOS transistor models from STM having a VDD equal to 1.2V and threshold voltage of 0.25V.

[1]  Mehdi Azadmehr,et al.  Band Pass Pseudo Floating-Gate Amplifier , 2007, 2007 14th IEEE International Conference on Electronics, Circuits and Systems.

[2]  Y. Berg.  Symmetric semi-floating-gate pseudo differential pair for low-voltage analog design , 2009, 2009 NORCHIP.

[3]  Tor Sverre Lande,et al.  Overview of floating-gate devices, circuits, and systems , 2001 .

[4]  Yngvar Berg,et al.  Pseudo Floating-Gate Inverter with Feedback Control , 2006, 2006 IFIP International Conference on Very Large Scale Integration.

[5]  Reid R. Harrison,et al.  A CMOS programmable analog memory-cell array using floating-gate circuits , 2001 .

[6]  Paul Hasler,et al.  A transistor-only circuit model of the autozeroing floating-gate amplifier , 1999, 42nd Midwest Symposium on Circuits and Systems (Cat. No.99CH36356).

[7]  Mehdi Azadmehr,et al.  Current-starved pseudo-floating gate amplifier , 2008 .

[8]  Yngvar Berg,et al.  Tunable floating-gate low-voltage transconductor , 2002, 2002 IEEE International Symposium on Circuits and Systems. Proceedings (Cat. No.02CH37353).

[9]  B. Nauta,et al.  Analog circuits in ultra-deep-submicron CMOS , 2005, IEEE Journal of Solid-State Circuits.

[10]  Snorre Aunet,et al.  Novel recharge semi-floating-gate CMOS logic for multiple-valued systems , 2003, Proceedings of the 2003 International Symposium on Circuits and Systems, 2003. ISCAS '03..