(D) and (Q) Packages. Unfortunately the data sheet does not indicate
where the Power Supply pins are on the surface mount package.
On the DIP packages -Vs is on pin 10 and Vs is pin 11. I have
assumed that on the surface mount package -Vs is on pin 12 and
Vs is on pin 13. Please confirm this.
Confirm pinout of power pins on soic.
On the AD637 SOIC package, +Vs is pin 13 and -Vs is pin 12.