Dear sir or Madam
Can LTC6404-1 be used as half unity gain(0.5V/V) ?
best regards ,
The datasheet does not state that gains of <1V/V are doable with LTC6404-1. However, LTspice simulation shows that you can:
1. Increase RF, RG absolute values to lower peaking (more stable).
2. Add cap across RF's to lower peaking.
Here is a simulation file for G= 0.5V/V with -3dB BW of around 400MHz with no discernible peaking for your review:
Here is the simulation file for your reference:
So, I think you should be able to get the part to work at this lower gain with the tricks above in case you encounter too much peaking / ringing.