Hello,
I am attempting to drive the LMX2581 with a 1 MHz oscillator input frequency. The device does not seem to be able to use a frequency this low, the lowest frequency I can get it to work at is 3.5 MHz. I realize the datasheet states the minimum oscillator input is 5 MHz, however, I have used other devices in this family such as the LMX2531 and had no issue running it with a 450 KHz oscillator input frequency (provided I provide the proper clock slew rate).
Is there a way to get the LMX2581 to operate with a 1MHz oscillator input?
Thanks,