shobhit
Member level 2
iam designing a fully differential folded cascode OTA
gain: 66 db
Vdd: 3.3 V
power dissipation 3.7 mW
BW: 980 Mhz
I have used switched capacitor CMFB(Common Mode Feed Back)
Problem: Iam getting gain of 54 dB and power dissipation of 2.7mW but the problem is that the gain curve is not crossing 0dB it reaches a minimum value of 1db at a frequency of about 14 MHz and then turns upward.It seems that multiple zeros are present but a far as I know there should be no zeros in folded cascode.............
Can any body help!!!!
gain: 66 db
Vdd: 3.3 V
power dissipation 3.7 mW
BW: 980 Mhz
I have used switched capacitor CMFB(Common Mode Feed Back)
Problem: Iam getting gain of 54 dB and power dissipation of 2.7mW but the problem is that the gain curve is not crossing 0dB it reaches a minimum value of 1db at a frequency of about 14 MHz and then turns upward.It seems that multiple zeros are present but a far as I know there should be no zeros in folded cascode.............
Can any body help!!!!