LT1991

We are exploring the opportunity to use LT 1991 for below requirement:

  1. Design 1 - Single ended input to Differential output; Gain of 1,2 – Vin (Single ended) ±18V
  2. Design 2 - Differential input to Single ended output; Gain of 0,6 - Vin Range (Differential)±38V
  3. Could be of different gain also

 

Below are the circuits where we able to cater all our requirements.

 

Design 1 (Final Gain 1.2): Can you provide your comments on input resistor R1 and R2. It is 1.78 Mohm. Is it ok to go ahead with these value?

 

Design2 (Final Gain 0.6): Can you provide your comments on input resistor R1 and R2. It is 1.78 Mohm. Is it ok to go ahead with these value?