Re: ADA4891-1W schematic review at ADV7393 DAC output

Discussion created by GuenterL Employee on Aug 20, 2013
Latest reply on Aug 20, 2013 by
Branched from an earlier discussion

The recommended schematic for non-inverting gain has positive and negative power rails on the op-amp.  The reason for this with the op--amp VSS tied to ground , the op-amp will have problems driving the output signal to ground.  The reference schematic show the rails being +-2.5V.  Setting them to +3.3V and negative 1-2V would work fine. 


ADA4891 Figure 61 shows a single supply non-inverting video buffer.


All power must be very clean, Gain resistors must be close to op-amp and very clean.