A. Zeki et H. Kuntman, High-output-impedance CMOS dual-output OTA suitable for wide-range continuous-time filtering applications, ELECTR LETT, 35(16), 1999, pp. 1295-1296
A high-output-impedance precision current mirror is implemented in a CMOS d
ual-output OTA (DOTA) structure by means of an efficient implementation met
hod, which is also applicable to other current-output-based active devices.
The new DOTA, when used in a DOTA-C integrator, enables integration at ver
y low Frequencies, with a capacitor on the order of several picofarads.