论文信息 - A CMOS current amplifier for very weak current operations

A CMOS current amplifier for very weak current operations

In this paper, a new current amplifier with a very simple structure is proposed. The most significant features of this circuit are as follows: (1) It can accept very weak input currents in a pA-nA range. (2) The mid-band current gain is about 60 dB. (3) The gain-bandwidth product can reach as high as 300 MHz. (4) The power dissipation is around 0.5 mW. The new circuit has been implemented using a CMOS digital technology and has been tested to validate the circuit specifications.

M.N.S. Swamy | Chunyan Wang | M.O. Ahmad

[1] Z. Wang. Wideband class AB (push-pull) current amplifier in CMOS technology , 1990 .

[2] Erik Bruun. Constant-bandwidth current mode operational amplifier , 1991 .

[3] T. Kaulberg. A CMOS current-mode operational amplifier , 1993 .

[4] Gaetano Palumbo,et al. High-drive CMOS current amplifier , 1998 .

[5] E. I. El-Masry,et al. A 200 MHz steered current operational amplifier in 1.2-/spl mu/m CMOS technology , 1997 .

[6] Thomas Kaulberg,et al. CMOS Current-mode Operational Amplifier , 1992, ESSCIRC '92: Eighteenth European Solid-State Circuits conference.