When i use the amplifier of LTC6600-20, I have two questions
1、Does the input of the LTC6600 need AC-couple or need DC- Couple with a common voltage when my input is differential.
2、 i connect the VCM of ADC-AD9628 into the "VCM" port of LTC6600, But the common voltage is 0.9V of AD9628 , it is lower than the spec of LTC6600 .
In datasheet, if i use 5V to power on the LTC6600, the VCM need larger than 1.5V（1.5V~3.0V）
So I want to check if the VCM is 0.9V, Whether it only affact the scale of the input signal or it will have some stability problems?