Recent Advances on the Design of High-Gain Wideband Operational Transconductance Amplifiers

Table 1

Comparison of simulation results for the original folded-cascode and the recycling folded-cascode OTAs.

Parameter	Folded-cascode	RFC1	RFC2
Power [𝜇A]	796	782	394
DC gain [dB]	52.63	60.91	59.32
GBW [MHz]	106.3	197.2	105.9
Phase margin [deg]	80.6	62.5	75.1
Total capacitive load [pF]	3.6	3.6	3.6
Slew rate (± average) [V/𝜇s]	99.3	231.1	116.5
Input referred noise (1 Hz-100 MHz) [𝜇Vrms]	53.16	48.48	69.71
0.1% settling time [ns]	21.7	11.6	21.7