LimeSDR mini minimum samp rate?

Does anyone know what is the minimum bandwidth for limesdr mini?
The parameter list only shows the maximum value.
I want to transmit a 64k carrier.

I did try down to 48KHz and it is working. For 64Khz wide signal use at least 192KHz sample rate and mix your signal with +/-SampleRate/2 to avoid DC center bump (TX local oscillator leakage).