1，refer UG-858, :If the digital temperature control loop is used, configure the compensation amplifier as a unity-gain follower by connecting the OUT2 pin to IN2N, and then apply the control signal from a DAC to the IN2P input. Thus, the OUT2 pin voltage is equal to the DAC voltage at the IN2P pin, and the TEC driver outputs follow Equation 1 and Equation 2.
so, VB=1.5V（VDDD<4V）, if Vout2=DAC output voltage， maxim 2.5V（REF=2.5V），VLDR=1.5V-40(2.5V-1.25V)= -48.5V ？ thanks.
2, If ADI have control algorithm with ADN8834 digital PID control? thanks.