High-gain differential amplifier utilizing dielectric isolation

A linear differential amplifier was designed in dielectric isolated integrated circuit form for reduction of weight and heat dissipation in space probes. Radiation damage resistance was also a consideration. A dielectrically isolated structure was chosen to provide the resistance to radiation damage, since such units have proven capable of receiving over 10¹⁵is fast neutrons without failing. Thin film resistors were chosen over diffused resistors, partly for radiation damage resistance and partly because of the close matching tolerances necessary.