Title :
High speed, high gain OTA in a digital 90nm CMOS technology
Author :
Berntsen, Øyvind ; Wulff, Carsten ; Ytterdal, Trond
Author_Institution :
Dept. of Electron. & Telecommun., Norwegian Univ. of Sci. & Technol., Trondheim, Norway
Abstract :
The design of a high-speed, high gain OTA in a digital 90nm CMOS technology is presented. The OTA uses the gain enhancement technique outlined in (Bult and Geelen, 1990) to increase the DC gain. The amplifier is fully differential an utilizes fully differential gain enhancement OTAs. The frequency response shows that 70dB DC gain and a unity gain frequency of 2.5GHz is achieved. The OTA draws 20mA from a 1.2V power supply.
Keywords :
CMOS digital integrated circuits; differential amplifiers; frequency response; high-speed integrated circuits; integrated circuit design; operational amplifiers; 1.2 V; 2.5 GHz; 20 mA; 70 dB; 90 nm; digital CMOS technology; frequency response; fully differential amplifier; operational transconductance amplifier; CMOS technology; Capacitors; Circuits; Differential amplifiers; Frequency response; Impedance; Performance gain; Power supplies; Switching converters; Voltage;
Conference_Titel :
NORCHIP Conference, 2005. 23rd
Print_ISBN :
1-4244-0064-3
DOI :
10.1109/NORCHP.2005.1597006
