Variable external power supply for AN-1066

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chughtaiah
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Variable external power supply for AN-1066

Does Voltage Slope Direction Determination Circuit (AN-1066) work with variable external power supply from 1.8-5V?

Device: 
Device Number: 
SLG46620 IC.
pavloZ
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Hi chughtaiah,

Hi chughtaiah,

yes, the design should work correct in full specified voltage range, while all the general chip restrictions keeping . E.g. input voltage to PGA should not exceed 1000mV (PGA gain=1). Please refer to the device datasheet for full specification. https://www.dialog-semiconductor.com/sites/default/files/slg46620r111_09...

Thanks for your question!

chughtaiah
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For 5V input voltage can I

Thanks for the reply. Also, comment on the following:
So for 5V input voltage can I set G=0.25 to get correct results i.e. a constant output indication at pin 15? Since the reference voltage of ADC can be set at 1.2V and input of PGA goes like 1.98/G according to the datasheet.

pavloZ
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For 5V input voltage the

For 5V input voltage the better case is to set ADC reference VDD*0.25 option instead 1.2V and remind that input voltage shouldn't exceed VDD