Title :
A low-voltage, low-power, wide gain-range VGA design using gm=ID Method
Author :
Isworo, Laksono Widyo ; Ochi, Hiroshi ; Muto, Cosy
Author_Institution :
Grad. Sch. of Comput. Sci. & Syst. Eng., Kyushu Inst. of Technol., Fukuoka, Japan
Abstract :
A low-voltage, low-power, wide gain-range variable gain amplifier (VGA) design has been proposed. To provide wide gain range feature, the proposed VGA utilizes a novel pseudo-exponential function. The design synthesis is simplified and optimized using gm = ID method which enables us to characterize transistors in any operating region based on their gm = ID and VGS relation. As the result, in CMOS 90nm technology under 1.2V supply voltage the proposed VGA has 75dB gain-range over 0.81V control voltage range, with 30MHz-184.8MHz bandwidth, and 0.72mW power consumption.
Keywords :
CMOS analogue integrated circuits; amplifiers; low-power electronics; CMOS; bandwidth 30 MHz to 184.8 MHz; gm/ID method; low-power VGA; low-voltage VGA; power 0.72 mW; pseudo-exponential function; size 90 nm; variable gain amplifier; voltage 1.2 V; wide gain-range VGA; CMOS technology; Circuit synthesis; Computer science; Design methodology; Disk drives; Energy consumption; Equations; Gain; Voltage; Wireless communication;
Conference_Titel :
Electrical Engineering/Electronics Computer Telecommunications and Information Technology (ECTI-CON), 2010 International Conference on
Conference_Location :
Chaing Mai
Print_ISBN :
978-1-4244-5606-2
Electronic_ISBN :
978-1-4244-5607-9
