Title :
Design of CMOS OTA amplifiers and oscillators in a digital sea-of-transistors array
Author :
Choi, Jung Hyun ; Bampi, Sergio
Author_Institution :
Inst. for Inf., Univ. Fed. do Rio Grande do Sul, Porto Alegre, Brazil
Abstract :
This paper presents measurement results of circuits designed in digital/analog CMOS structures implemented in two different methodologies: in a fixed-size transistors array and in a full-custom design. One oscillator and both Miller and folded-cascode type OTAs (Operational Transconductance Amplifier) designed on Sea-Of-Transistors (SOT) were prototyped and tested. OTA folded-cascode designed in full-custom and SOT arrays allow better comparisons between methodologies. This paper also presents delay-power characteristics for the 1.0 μm digital technology used for these designs. Comparisons are made with older 2.0 μm and 1.2 μm digital technologies also from the ATMEL ES2 foundry
Keywords :
CMOS analogue integrated circuits; application specific integrated circuits; arrays; integrated circuit design; operational amplifiers; oscillators; 1 micron; CMOS OTA amplifiers; CMOS OTA oscillators; Miller type OTA; SOT arrays; delay-power characteristics; digital sea-of-transistors array; digital/analog CMOS structures; fixed-size transistors array; folded-cascode type OTA; full-custom design; operational transconductance amplifier; Analog circuits; Bandwidth; Capacitance; FETs; Informatics; Logic arrays; MOS capacitors; Microelectronics; Power supplies; Ring oscillators;
Conference_Titel :
Electronics, Circuits and Systems, 1998 IEEE International Conference on
Conference_Location :
Lisboa
Print_ISBN :
0-7803-5008-1
DOI :
10.1109/ICECS.1998.813331
