quintessential
New Member
hey guys,
so I'm doing crude PSRR testing on voltage regulators. My circuit is simple, a signal generator generates a ripple(say 200mv peak to peak) that i superimpose on the power supply of my regulators with the aid of an op Amp. with a spectrum analyzer i study the ripple at the output, my problem is i would like to test PSRR at frequencies up to 20Mhz and some of my regulators sap up to 1A of current so i'm wondering if there is an Op Amp out there that can source an Amp of current or greater and is unity gain stable up to 20Mhz?.......or if there is another way i can impose a ripple on a DC source and supply it to my regulators,thanks
so I'm doing crude PSRR testing on voltage regulators. My circuit is simple, a signal generator generates a ripple(say 200mv peak to peak) that i superimpose on the power supply of my regulators with the aid of an op Amp. with a spectrum analyzer i study the ripple at the output, my problem is i would like to test PSRR at frequencies up to 20Mhz and some of my regulators sap up to 1A of current so i'm wondering if there is an Op Amp out there that can source an Amp of current or greater and is unity gain stable up to 20Mhz?.......or if there is another way i can impose a ripple on a DC source and supply it to my regulators,thanks