fcfusion
Full Member level 4
Class D Amplifier PSRR
Hi guys
I'm designing a Class D amplifier to be integrated in mobile applications, and I need to test the PSRR .
I've read some documents stating that the circuit should be tested for GSM EMI: square wave, Vpp=200mV, freq = 217 Hz.
Is this the standard?
I'm also simulating for battery charge variations.
Besides that, when I plot the output FFT how do I separate the signal components from supply EMI components? How can I get PSRR value?
I'm simulating using hspiceD and plotting results using Wave Viewer from Synopsis.
Thanks
Hi guys
I'm designing a Class D amplifier to be integrated in mobile applications, and I need to test the PSRR .
I've read some documents stating that the circuit should be tested for GSM EMI: square wave, Vpp=200mV, freq = 217 Hz.
Is this the standard?
I'm also simulating for battery charge variations.
Besides that, when I plot the output FFT how do I separate the signal components from supply EMI components? How can I get PSRR value?
I'm simulating using hspiceD and plotting results using Wave Viewer from Synopsis.
Thanks