EV9790
Evaluation Kit for CMX979
(engineering samples)
2017 CML Microsystems Plc
CML Microcircuits
COMMUNICATION SEMICONDUCTORS
UM9790/1 July 2017
USER MANUAL
Advance Information
Features
Demonstrates the CMX979 Fractional-N RF PLL, IF PLL and
associated VCOs
On-board reference oscillator with options for an external
source
Divided LO outputs
Powered by external 6.0V power supply
1
Brief Description
The EV9790 is a demonstration and evaluation platform for the CMX979 Dual PLL and VCOs. The CMX979 provides a 2700
to 3600 MHz 24-bit Fractional-N RF PLL with an internal RF VCO. A separate integer-N IF PLL and VCO covering 500 to
1000 MHz (as supplied) are also provided. An inductor value change can configure the IF VCO to cover other frequency
ranges. Both VCO outputs can be routed via selectable on- chip frequency dividers.
The board includes all necessary voltage regulators and is operated from an external ~6V dc supply.
The EV9790 provides a 19.2MHz reference oscillator along with options for an additional frequency reference. The
EV9790 interfaces to the PE0003 Universal Interface Controller via a HB0003 Interface Board which provides conversion
of the logic levels to allow read and write access to the CMX979 registers. This interface is supplied with the EV9790. A
graphical user interface is available for operational set-up as well as handling control scripts.
