Title :
Low-voltage low-power amplifiers
Author :
Huijsing, Johan H. ; Hogervorst, Ron ; De Langen, Klaas-Jan
Author_Institution :
Fac. of Electr. Eng., Delft Univ. of Technol., Netherlands
Abstract :
Low-voltage and low-power amplifiers are strongly limited in dynamic range (DR) and bandwidth (B). The maximum dynamic-range/supply-power ratio is restricted to DRmax/Psup = π/16 kTBe by thermal noise in resistors. To obtain this maximum value, several rail-to-rail (R-R) input stages and R-R output stages biased in class-AB are designed. The maximum bandwidth/supply-power ratio is restricted to B0max/P sup = 3/CLVsup, and B0max/P sup = 1/120I1/2DCLVsup , respectively, for bipolar and CMOS transistors. To obtain this maximum value at a sufficient amount of low-frequency gain, several compensation structures are designed, such as parallel, Miller, and multipath nested Miller compensation
Keywords :
CMOS analogue integrated circuits; amplifiers; bipolar analogue integrated circuits; compensation; integrated circuit design; CMOS transistors; LV amplifiers; bandwidth; bipolar transistors; class-AB bias; compensation structures; dynamic range; low-frequency gain; low-power amplifiers; monolithic IC; multipath nested Miller compensation; Bandwidth; Current supplies; Dynamic range; Power supplies; Rail to rail inputs; Rail to rail outputs; Resistors; Signal processing; Thermal resistance; Voltage;
Conference_Titel :
Circuits and Systems, 1993., ISCAS '93, 1993 IEEE International Symposium on
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-1281-3
DOI :
10.1109/ISCAS.1993.394005
