Title :
Low supply voltage high-performance CMOS current mirror with low input and output voltage requirements
Author :
Ramírez-Angulo, J. ; Carvajal, R.G. ; Torralba, A.
Author_Institution :
Klipsch Sch. of Electr. & Comput. Eng., New Mexico State Univ., Las Cruces, NM, USA
fDate :
3/1/2004 12:00:00 AM
Abstract :
This paper presents a scheme for the efficient implementation of a low supply voltage continuous-time high-performance CMOS current mirror with low input and output voltage requirements. This circuit combines a shunt input feedback and a regulated cascode output stage to achieve low input resistance and very high output resistance. It can be used as a high-precision current mirror in analog and mixed signal circuits with a power supply close to a transistor´s threshold voltage. The proposed current mirror has been simulated and a bandwidth of 40 MHz has been obtained. An experimental chip prototype has been sent for fabrication and has been experimentally verified, obtaining 0.15-V input-output voltage requirements, 100-Ω input resistance, and more than 200-MΩ (GΩ ideally) output resistance with a 1.2-V supply in a standard CMOS technology.
Keywords :
CMOS analogue integrated circuits; current mirrors; low-power electronics; 0.15 V; 1.2 V; 100 ohm; 200 ohm; 40 MHz; CMOS analog integrated circuits; CMOS current mirror with; analog signal circuits; cascode output stage; chip prototype; current mirrors; input resistance; input voltage requirements; low supply voltage; low-voltage analog electronics; mixed signal circuits; output resistance; output voltage requirements; shunt input feedback; transistor threshold voltage; Bandwidth; CMOS technology; Circuit simulation; Feedback circuits; Low voltage; Mirrors; Output feedback; Power supplies; Prototypes; Threshold voltage;
Journal_Title :
Circuits and Systems II: Express Briefs, IEEE Transactions on
DOI :
10.1109/TCSII.2003.822429
