bit_an
Junior Member level 3
Hello,
I am very much pleased to know about the benefits of Negative Feedback and how it is used in conventional LVDS Driver Circuit. I am trying to design one for myself. But as per the negative feedback thery, the Open Loop Gain of the Amplifier/Core Module is normally very high. With feedback it comes down near unity to enforce very high linearity. Can anyone tell me how to measure the Open Loop Gain for an LVDS Driver System. I am very confused becasue if I check the differential gain i.e. (OP-ON)/(IP-IN) for the figure give in the attachment. I get -30dB gain????!! While measuring Open Loop Gain what should be the common mode input of the Driver?! Where am I going wrong with this?! Please give your suggestions
I am very much pleased to know about the benefits of Negative Feedback and how it is used in conventional LVDS Driver Circuit. I am trying to design one for myself. But as per the negative feedback thery, the Open Loop Gain of the Amplifier/Core Module is normally very high. With feedback it comes down near unity to enforce very high linearity. Can anyone tell me how to measure the Open Loop Gain for an LVDS Driver System. I am very confused becasue if I check the differential gain i.e. (OP-ON)/(IP-IN) for the figure give in the attachment. I get -30dB gain????!! While measuring Open Loop Gain what should be the common mode input of the Driver?! Where am I going wrong with this?! Please give your suggestions