For our board build of 75 we need to find a pin for pin alternative for the ADA4622-1 which is an 8 pin MSOP. as we cannot find this part at any of the vendors.
The application is unity gain,
needs to be able to drive 6Vpp signals at 50KHz at not much distortion.
Needs to be high impedance. Maybe JFET type input stage.
Good DC performance with drift etc.
Will need to operate at high temperature. around 75C.