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# AMC7832: SLAS836

Part Number: AMC7832

In AMC7832 ,the ADC can take input voltages in the range -12.5V to 12.5V and it will convert this i/p voltage to digital by taking 2.5V reference .But the issue is how it will convert voltage in the range from -12.5V to 12.5V to 12 bit output?I want to know the conversion of voltage from  -12.5V to 12.5V to 12 bit bianary form.

• Hi Akshay,

The bipolar input channels are stored in straight binary. You can use the equation shown in section 8.3.2.1.1 of the AMC7832 datasheet to calculate the voltage for a given code.

To calculate the code based on the known voltage, you can use the equations:
CODE = (4096/5)((DACOUTPUT/5)+2.5)

Let me know if you have any more questions. In addition, section 8.3.2 goes into more detail of the ADC's operation.

Paul
• thank u sir
• sir,one more doubt i have..range of ADC of ADC7832 is 5 or 25?
• The AMC7832 has twelve ADC channels with the +/-12.5V input range, denoted as "ADCn" pins in the datasheet. It also has five channels with a +5V input range, denoted as "LV_ADCn".

Thanks!
Paul