Other Parts Discussed in Thread: TLV9001-Q1
Tool/software:
Hi TI
I'm working with the ADS7828-Q1 ADC and utilising the internal 2.5V reference provided on the REF OUT pin.
I have a thermistor that I am measuring the resistance of, to derive PCB temperature. I have the thermistor as the bottom half of a typical potential divider, the top resistor is a regular 10k, this potential divider is supplied from the REF OUT pin.
I want to verify that I do not draw too much current from the REF OUT pin, however, I couldn't find specific information in the datasheet regarding the maximum allowable current that can be drawn from the REF OUT pin without degrading the reference accuracy.
The datasheet specifies a load regulation of 500 µV/µA, but it doesn't mention a hard limit on the maximum current draw.
What is the recommended maximum current I can safely draw from the REF OUT pin without compromising the reference stability or ADC performance?
Thanks in advance for your help!
Best regards,
Charles