What is the maximum supply voltage with out any input signal or output power?
The maximum supply voltage of the LM4651/52 is limited by the fabrication process. The +/-22 Volt guarantee is for full output power. The LM4651/52 chips can normally go to +/-25 Volts with out damage but not with full output power in all cases. Because there is often confusion about operating and maximum ratings one specification is given. In most cases an unregulated supply is used in the application with the voltage rails increasing as the output power decreases. With no input signal or output power the supply rails must not go above +/-22 Volts or there is the possibility that a small number of parts will fail.
