EV9790

EV9790 CML Microcircuits Evaluation Kit for CMX979 COMMUNICATION SEMICONDUCTORS UM9790/2 October 2017 USER MANUAL Advance Information Features Demonstrates the CMX979 Fractional-N RF PLL, IF PLL and Divided LO outputs associated VCOs Powered by external 6.0V power supply On-board reference oscillator with options for an external source 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 to allow read and write access to the CMX979 registers. A graphical user interface is available for operational set-up as well as handling control scripts. 2017 CML Microsystems Plc Evaluation Kit for CMX979 EV9790 CONTENTS Section Page 1 Brief Description ....................................................................................................................................................... 1 2 History...................................................................................................................................................................... 3 3 Block Diagram .......................................................................................................................................................... 4 4 Preliminary Information ........................................................................................................................................... 5 4.1 Laboratory Equipment....................................................................................................................................................... 5 4.1.1 Power Supply ..................................................................................................................................................................... 5 4.2 Handling Precautions ........................................................................................................................................................ 5 4.2.1 SSD Devices ....................................................................................................................................................................... 5 4.2.2 Contents - Unpacking ........................................................................................................................................................ 5 4.3 Approvals........................................................................................................................................................................... 5 5 Quick Start ............................................................................................................................................................... 6 5.1 Setting-Up ......................................................................................................................................................................... 6 5.2 Operation .......................................................................................................................................................................... 6 5.3 Signal Lists ......................................................................................................................................................................... 6 6 Circuit Schematics and Board Layouts ....................................................................................................................... 9 7 Detailed Description ............................................................................................................................................... 11 7.1 Hardware Description ..................................................................................................................................................... 11 7.1.1 RF VCO /PLL ..................................................................................................................................................................... 11 7.1.2 IF PLL/VCO ....................................................................................................................................................................... 11 7.1.3 Reference Oscillator ........................................................................................................................................................ 11 7.1.4 Power Supplies ................................................................................................................................................................ 12 7.1.5 Reset Circuit .................................................................................................................................................................... 12 7.1.6 Inductors ......................................................................................................................................................................... 12 7.2 Adjustments and Controls ............................................................................................................................................... 13 7.3 Script/GUI Control ........................................................................................................................................................... 13 7.3.1 The C-BUS Control Tab .................................................................................................................................................... 14 7.3.2 The C-BUS Control Extended Tabs (C-BUS Ctrl Ext. 1 / Ext. 2) ......................................................................................... 15 7.3.3 The General Control Tab ................................................................................................................................................. 16 7.3.4 The VCO Calibration Tab.................................................................................................................................................. 16 7.3.5 The RF PLL Tab ................................................................................................................................................................. 17 7.3.6 The IF PLL Tab .................................................................................................................................................................. 17 7.3.7 The Script Handler Tab .................................................................................................................................................... 18 7.4 Application Information .................................................................................................................................................. 20 7.4.1 Typical Performance ........................................................................................................................................................ 20 7.5 Troubleshooting .............................................................................................................................................................. 23 7.5.1 RF PLL Operation ............................................................................................................................................................. 23 7.5.2 IF PLL Operation .............................................................................................................................................................. 23 8 Performance Specification ...................................................................................................................................... 24 8.1 Electrical Performance .................................................................................................................................................... 24 8.1.1 Absolute Maximum Ratings ............................................................................................................................................ 24 8.1.2 Operating Limits .............................................................................................................................................................. 24 8.1.3 Operating Characteristics ................................................................................................................................................ 25 Table Page Table 1 Connector List ......................................................................................................................................................................... 6 Table 2 External C-BUS Host Interface ................................................................................................................................................. 7 Table 3 Optional PE0003 Host /Interface DC connector ...................................................................................................................... 7 Table 4 Test Points ............................................................................................................................................................................... 7 Table 5 Test Loops ............................................................................................................................................................................... 8 Table 6 Jumpers ................................................................................................................................................................................... 8 rd Table 7 3 Order Loop Filter Values for a VCO Frequency of 2.925GHz/3.5GHz ............................................................................... 11 Table 8 RF PLL Possible Errors ......................................................................................................................................................... 23 Table 9 IF PLL Possible Errors .......................................................................................................................................................... 23 Figure Page Figure 1 CMX979 Block Diagram .......................................................................................................................................................... 4 Figure 2 EV9790 Block Diagram ........................................................................................................................................................... 4 Figure 3 Typical Evaluation Connections for EV9790 ........................................................................................................................... 6 Figure 4 PCB Layout: Top ..................................................................................................................................................................... 9 2017 CML Microsystems Plc 2 UM9790/2