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ADuC7060 Scaling ADC1

Question asked by KevinM on Apr 23, 2013
Latest reply on May 10, 2013 by AudeR



I am pretty new to the analog microcontrollers and I was hoping someone might be able to answer a ouple of questions.  I read in the data sheet that ADC1 can be used as 4 differential inputs, but only has gains of 1,2,4, and 8.  In my application I am using a resistive bridge transducer that outputs 2mV/V.  I want to use a 5V excitation voltage which gives me a max range of 0-10mV.  How can I use an external voltage source to provide 5V to the ADC and bridge? The second question is: if I want a 0-10mV, can I tie vref+ and vref- to ground to get a unipolar input?