a 0 . 8 - v 0 . 25 - mw current - mirror ota with 160 - mhz gbw in 0 . 18 - μm cmos .
a 0 . 8v , 8 - μ w , cmos ota with 50 - db gain and 1 . 2 - mhz gbw in 18 - pf load .