mImoto
Full Member level 4

Hello,
I am looking for DACs (similar to the TI Tlv5623). I have seen that for example this one should have an external reference of about 2 volts. then it has a x2 amplifier inside.
Analog and some others have DACs with internal reference programable.
I don't know which is the reason for having an external reference, why not the designers use directly the 5V as internal ref. and then no x2 amplifier. I know I am forgetting something, maybe technology reasons.Could someone clarify me my doubts? and also which is better Dacs wit internal or with external reference?.
Best regards,
mimoto
I am looking for DACs (similar to the TI Tlv5623). I have seen that for example this one should have an external reference of about 2 volts. then it has a x2 amplifier inside.
Analog and some others have DACs with internal reference programable.
I don't know which is the reason for having an external reference, why not the designers use directly the 5V as internal ref. and then no x2 amplifier. I know I am forgetting something, maybe technology reasons.Could someone clarify me my doubts? and also which is better Dacs wit internal or with external reference?.
Best regards,
mimoto