Could you help me with the LTspice model of the AD694?
Unfortunately we don't have a LTspice model for this part as of this time. However, you can build an application circuit for the 4 to 20mA current loop transmitter from the vast option of opamps collection in the LTspice library.
What's your application? You could also refer to this circuit note for design idea.
I built a simple circuit with AD694 to measure the voltage and transmit as a 4-20mA signal. This is the first step to building a circuit later that i will combine with an rms-to-dc converter AD8436. I realised that the circuit is not immune to changes in the supply voltage. Consequently, i wanted to thoroughly examine the causes before i proceed to the next step.