ajaychowdharykr
Newbie level 3
Hi guys,
I need to design a fully differential operational amplifier as an ADC driver. I will get +/- 0.5volt sinusoidal input signal and have to generate the differential signal with the DC shift(i.e 0.4-1.4 volt differential sinusoidal signal). The problem is that, if I can bias the input transistors with 0.9 volts and then apply my input signal, then my input transistor will be in the cutoff region when my input approach -0.5 volts.
do anyone have any clues, how should I start designing so that my linear range can be increased.
Any kind of support or material is appreciated.
Thanks.
I need to design a fully differential operational amplifier as an ADC driver. I will get +/- 0.5volt sinusoidal input signal and have to generate the differential signal with the DC shift(i.e 0.4-1.4 volt differential sinusoidal signal). The problem is that, if I can bias the input transistors with 0.9 volts and then apply my input signal, then my input transistor will be in the cutoff region when my input approach -0.5 volts.
do anyone have any clues, how should I start designing so that my linear range can be increased.
Any kind of support or material is appreciated.
Thanks.