order assist your evaluation National Semiconductor's Ultra Power PLL'

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order assist your evaluation National Semiconductor's Ultra Power PLL'

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PLLATINUMEVALUATION BOARD LMX2326/16/06 VERSION 2/98
order assist your evaluation National Semiconductor's Ultra Power PLL's, blank printed circuit board included with this product sample kit. designed reduce time required construct working evaluation environment Ultra Power PLL's while still providing flexibility needed create circuit that matches your specific application. This document provides information necessary populate board build parallel interface cable that allows control board. documentation also includes set-up operating instructions hardware software. Finally, troubleshooting section provided.
PREPARING EVALUATION BOARD HARDWARE
LMX2326/16/06 series single power Evaluation Board implementation schematic shown Appendix board, shown Appendix consists locations Ultra Power PLL's, modular loop filter. Space header provided MICROWIREprogramming divider ratios. ribbon cable connects evaluation board header parallel port with Window version better. bill materials list board found Appendix Loop filter components listed bill materials. These components determined user depending upon his/her application. list manufacturers found Appendix this document. Information loop filter design found Application Note (AN-1001) titled, Analysis Performance Evaluation Passive Filter Design Technique Charge Pump Phase-Locked Loops" which also included product sample kit, found National Wireless Databook. board kinds interconnections. connectors should used external reference output, while power supply biasing ground attached board either mounting connectors directly soldering pads. four header allows VCC, Vvco driven separately from single power supply. Resistors denoted O.C. S.C. (Open Circuit Short Circuit) schematic connecting various outputs output pads ground using resistors shorts. simple four wire interface cable used interface (with Window version better) evaluation board. cable, which described Appendix connects from PC's parallel port header evaluation board. cable provides MICROWIREsignals (i.e. Data, Clock, Load Enable) needed program Ultra Power PLL's. Since most PC's parallel ports have output level pads resistive dividers Clock, Data, Load Enable also included. This will allow voltage operation without overdriving MICROWIREinputs. assumed coupled. Resistor R14, schematic increase impedance that output power provided load rather than PLL. Typical values depending power level. real impedance ranges from 200. termination often used test boards allow signal generator external reference oscillator. actual manufactured products, CMOS clock typically used terminating resistor required. OSCin coupled. coupling recommended because input
PLLATINUMEVALUATION BOARD LMX2326/16/06 VERSION 2/98 circuit provides bias. Proper grounds power supply decoupling essential achieve high level performance. Pads power supply decoupling capacitors provided. Ultra Power static sensitive device. should handled only static free work stations.
USING EVALUATION BOARD
Hardware Set-Up Instructions user should make following connections operate evaluation board standard mode: Connect output OUT) spectrum analyzer, Connect reference input within range port, Connect interface cable parallel port header evaluation board, connect power supply input (2.3 -5.5 depending your application). With both jumpers voltage header, will same supply. board ready operate. This configuration evaluation purposes only meant show would used system. following block diagram shows typical equipment set-up evaluating series PLL. Spectrum Analyzer used obtain phase noise reference spur measurements. Domain Analyzer used lock time measurements.
Domain Analyzer
Chan 11633B Power Splitter
Attenuation Input
Evaluation Board
Spectrum Analyzer
reference 10MHz
Power Supply
Attenuation
Obtaining Evaluation Software evaluation board software obtained through National Semiconductor page. http://www.national.com/models/
PLLATINUMEVALUATION BOARD LMX2326/16/06 VERSION 2/98 evaluation software called Code Loader. There different choices loading software depending which Window's version used.
Using Evaluation Software Please refer "Code Loader Operation" document software. There Appendices explaining instructions specific LMX2306, LMX2316 LMX2326.
TROUBLESHOOTING TIPS
Using magnification, visually inspect board cold solder joints, broken, misplaced partially soldered components, solder bridges. These items common causes partially nonworking boards. Verify that correct voltage levels Vcc, actually getting places they need (i.e. measure voltage pins, edges board). Also verify that Jumpers properly number power supplies being used (i.e. only supply being used, both power supply jumpers should place). Verify that OSCin getting proper XTAL frequency that OSCout amplified version Both OSCin OSCout should have offset. Verify that series getting proper programming signals putting software "switch" mode probing CLOCK, DATA, pins with oscilloscope. Also verify that programming signals appropriate level your application (i.e. your application one, make sure that volt signals from being resistivly divided that they don't overdrive inputs.) Verify proper values frequency, Reference frequency, crystal frequency evaluation software. Computer monitors other equipment have been shown cause noise spikes. noise spikes signal turning monitor other equipment verify that they cause. Also noise getting onto signal through cable that connects parallel port computer.
PLLATINUMEVALUATION BOARD LMX2326/16/06 VERSION 2/98
APPENDIX LMX2326/16/06 Evaluation Board Schematic
FO/LD
Vcc1 OSCin
0.01
Vcc2 Fo/LD Data Clock PWDN
0.01
0.01
10K, optional
LMX2326
0.01
1000
10K, optional
Pwdn
Title
LMX2326 Evaluation Board
Number Revision Sheet Drawn
Size Date: File:
4-Feb-1998 A:\LMX2326.SCH
PLLATINUMEVALUATION BOARD LMX2326/16/06 VERSION 2/98
APPENDIX LMX2326/16/06 Evaluation Board Layout
PLLATINUMEVALUATION BOARD LMX2326/16/06 VERSION 2/98
APPENDIX LMX2326/16/06 Evaluation Board Bill Materials
Volt Operation:
DESCRIPTION 0.01 1000pf SIZE LOCATION C10, C11, C12, C14, R12, R13, R14, R10,
Shunts 0.100" Doublewipe contacts Surface mount Header 0.100" 0.100" Double Row, position Surface mount Header 0.100" 0.100" Double Row, position Mount Launch Jack Receptacles out, REF,
Note: Adjust value required Vvco level.
Volt Operation make following changes:
Remove voltage divider resistors, R11. resistors
Change following components specific devices. operation LMX2306
Murata 243, 680pF, 4700pF, open, 15k, short
LMX2316
Varil 2549, 390pF, 2200pF, 33pF, 18k,
LMX2326
Varil 1960, 390pF, 2200pF, 6.8pF, 15k,
PLLATINUMEVALUATION BOARD LMX2326/16/06 VERSION 2/98
APPENDIX Suppliers
ALPS Electric CO., LTD.
Yukigaya Otsuka-Cho Ota-Ku Tokyo, Japan Phone: (03) 3726-1211 FAX: (03) 3728-1741
Fuji Electrochemical CO., LTD.
Hama Gomu Building 5-36-11 Shinbashi Minato-Ku Tokyo, Japan Phone: (03) 434-1271
M/A-COM
Burlington, 01803 Phone: (617) 564-3100 FAX: (617) 564-3050
muRata Manufacturing CO., LTD.
26-10 2-Chome, Tenjin, Nagaokakyo-shi Kyoto 617, Japan Phone: 075-951-9111 FAX: 075-954-7720
muRata Marketing Communications
2200 Lake Park Smyrna, 30080 Phone: (800) 831-9172 FAX: (404) 436-3030
PLLATINUMEVALUATION BOARD LMX2326/16/06 VERSION 2/98
APPENDIX Parallel port MICROWIREInterface Cable
Clock Data Ground
Ribbon Cable Connector Female 0.100" Double Positions (Only positions used)
DB25 Male Connector

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