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am I drawing too much current on analog inputs? #10

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SensorPlay opened this issue Jul 27, 2019 · 0 comments
Open

am I drawing too much current on analog inputs? #10

SensorPlay opened this issue Jul 27, 2019 · 0 comments

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@SensorPlay
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I have a pressure sensor hooked up and want to ensure it does not draw too much current.

The ADS1220 datasheet lists current sources as 10-1500 microamps. If I understand this correctly, A+/A- can only source 1.5mA to the wheatstone bridge?

image

image

My A+/A- has a resistance across of ~300 Ohms.

With nominal voltages (5v, 3.3v, etc), will my pressure sensor over-draw?
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