Sundance SMT349 - Manual (Page 12)

Version 2.1 Page 12 of 32 SMT349 User Manual
Rx Section
Noise Figure .................................... 3dB maximum
Input IP3 .......................................... 0dBm minimum
Maximum input, no damage ............ +20dBm, minimum
RF bandwidth .................................. 100MHz (1dB) or 150MHz (3dB)
RF rejection BW .............................. 15dB minimum @ -/+ 100MHz off
band-edge.
25dB minimum @ -/+ 500MHz off
band-edge
5 Timing module
5.1 Technical specifications of the timing module:
LO phase noise
At 1 kHz ........................................... -40dBc/Hz
At 10 kHz ......................................... -55dBc/Hz
At 100 kHz ....................................... -65dBc/Hz
At 300 Khz ....................................... -70dBc/Hz
At 1MHz........................................... -80dBc/Hz
LO switching time..................................... 100nsec maximum to
±20ppm
Synthesizer minimum step....................... 4 kHz
XO reference
Nominal frequency............................. 10.0000MHz
Frequency accuracy ..........................
±2ppm over the temperature range
5.2 On-board reference crystal (standard SMT349)
The standard SMT349 board comes with a 16-MHz on-board crystal (Rakon –
IVT5300B) as a reference to the clock synthesizer.
5.3 External Reference (Option)
Optionally (SMT349-EXTREF), the on-board reference crystal can be replaced by an
external reference using connector J18, in which case a signal of frequency within
the range 2-50MHz and amplitude 0.2-3.3V can be applied to J18.
6 General specifications