Hello,
I don't understand what is allowed input swing of thew analog signal for ADS1675?
Information's from datasheet:
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Hello,
I don't understand what is allowed input swing of thew analog signal for ADS1675?
Information's from datasheet:
The input to the ADC is a differential signal. Typically, differential signals are biased at the common-mode voltage. You have to be careful to not think of the differential voltage in terms of single-ended signals.
So for this case, VCM = 2.5V and VREF = 3.0
To achieve full-scale input (Vin = 3V):
This achieves VIN = IN+ - IN- = 3.0V
To achieve VIN = -3.0V, you can simply switch the input voltage levels about
This achieves VIN = IN+ - IN- = -3.0V
Thank you Greg for your answer, this info really helps me :-)
Things are much more clearer to me now.
Considering page 2 of the datasheet I am assuming that is safe to apply
full differential voltage swing from 0 to 5V, values from 4V to 5V and from
0V to 1V will be clipped but ADS1675 input pins won't be damaged?
best regards
The datasheet Absoute Maximum Ratings table (which is what you are referring to I believe) shows the operating conditions permissible for the analog inputs as (Analog I/O to GND)