Re: trying to understand the REF pin on a DAC



kasterborus@xxxxxxxxx wrote:

Wow thanks - that makes sense...

I was reading the data*** for the chip and I have a question...
http://focus.ti.com/lit/ds/symlink/tlv5618a.pdf

At one point it says that the maximum ref voltage is Vdd + 0.3,

Yes, that's the 'absolute maximum' above which damage will occur.


then later is says the maximum recommended Vref is Vdd-1.5.

For reliable performance no doubt.


Would it be OK just to tie this pin to the 5v I'm using to power the
chip?

Best to filter it first. Even with just an RC.

Graham

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