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Problem with read back with 16-bit ADC adc78xx

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ahmet2004

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I have read back problem with ADC7825 which is 16-bit ADC, bipolar 10V. After interfacing with this chip, the read back values are as follow:
For -12V to 0 -> the read back value = 0 to 65536
For 0V to +12V -> the read back value = 0 to 65536

The problem is how to identify the polarity of input voltage? According to datasheet, the format of output is Binary Two's Complements.
 

Re: 16-bit ADC adc78xx

hi ahmet ..
are you sure of the number ...
cause as far as i knoe it's a 8 bit ADC
 

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