I am trying to implement the below circuit (from) without ADuC842, I will use Arduino mega2560 ADC.

the circuit generates -5V to 5V rail to rail voltages for ad620a and they control ref voltage via DAC to adjust offset dynamically.

I need to change how Ref pin voltage is supplied,

I have the following doubts?

if the voltage at ref pin is 5V the out swing between 0-5? how can I get the output of ad620 to swing between 0-5V (pin 6 ad620)

dummy doubts

is it possible to measure the negative voltage from the microcontroller ADC?

can aduc842 generates a negative voltage from DAC?

I am trying to implement the below circuit (from) without ADuC842, I will use Arduino mega2560 ADC.

the circuit generates -5V to 5V rail to rail voltages for ad620a and they control ref voltage via DAC to adjust offset dynamically.

from the link, To avoid output saturation, the usable gain is limited by the output swing and the maximum input voltage to the IA. With a +-5 V power supply, the output swing of the AD620 is about +-3.8 V; and the maximum input is +-5 mV plus a variable normal-mode dc offset of up to +-300 mV, allowing a maximum gain of 12.45. Here, the gain is conservatively set to 8 (+-1%), using RG = 8.45 kOhm.

I need to change how Ref pin voltage is supplied,

I have the following doubts?

if the voltage at ref pin is 5V the out swing between 0-5?

how can I get the output of ad620 to swing between 0-5V (pin 6 ad620) what voltage should I apply to ref pin

dummy doubts

is it possible to measure the negative voltage from the microcontroller ADC?

can aduc842 generate a negative voltage from DAC?