Hi all. I was looking at the TDA1545a datasheet and I am a little confused in regards to Figure 1 where the DAC is connected to a couple of op amps with no current sinking resistors.
Are these resistors only required when you do not use Op amps? Does the VREF connected to the non inverting inputs of the op amps maintain the sinking current for the DAC'c outputs?
I have seen circuits with 2.2k ohm resistors on the outputs but with no op amps connected. Which would be the best way to connect this DAC?
The data sheet can be looked at:
http://www.datasheetcatalog.org/datasheet/philips/TDA1545A_T_3.pdf
Does any one have any suggestions on this please.
Regards
Billy D...
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Are these resistors only required when you do not use Op amps? Does the VREF connected to the non inverting inputs of the op amps maintain the sinking current for the DAC'c outputs?
I have seen circuits with 2.2k ohm resistors on the outputs but with no op amps connected. Which would be the best way to connect this DAC?
The data sheet can be looked at:
http://www.datasheetcatalog.org/datasheet/philips/TDA1545A_T_3.pdf
Does any one have any suggestions on this please.
Regards
Billy D...
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