LMX2571: Max sampling rate FSK I2S

Alex Strelbytskyy

Expert 1950 points

Part Number: LMX2571

Hello,

I'm using FSK I2S for the LMX2571. If the oversampling FSK modulation is used, what the maximum sampling rate can be achieved? in other words, what is the inertia of the FSK modulator?

Thanks,

Alex

over 5 years ago

0 Noel Fung over 5 years ago

TI__Guru** 106990 points

Hi Alex,

Theoretically speaking, this is limited by the max. I2S clock rate, which is 100MHz.

However, there are couples of consideration for the chosen sampling rate. For example, loop filter bandwidth and spurs.

The following appnote has some suggestions.

www.ti.com/.../SNAA309

0 Alex Strelbytskyy over 5 years ago

Expert 1950 points

Thanks, Noel.

Clock & timing

Clock & timing forum

LMX2571: Max sampling rate FSK I2S