Texas Instruments RC4558P Operational Amplifier (Pack of 5)

hi my name is mad uglies am a senior application engineer at Texas Instruments the precision linear group I'd like to talk to you today about long-term stability of operational amplifiers how various data sheet parameters change over the life of a product there are two types of pds specs there is the kind of specs that are center around zero or min value like voltage offset drift reference voltage or open loop gain where the specs can change by one hundred percent of the PS specified maximum or minimum value there is also the kind of specs center around absolute value like quiescent current slew rate or short circuit current where the specs can change over the life of a product by plasma has ten percent of the maximum or minimum specify pds value before I get into the details how various parameters change over the product life I'd like to refresh the information about the normal gaussia