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LMX2531LQ1910E

Evaluation Board Operating Instructions

National Semiconductor Corporation

Wireless Communications, RF Products Group

2900 Semiconductor Dr.

Santa Clara, CA, 95052-8090

LMX2531LQ1910EFPEB Rev 1.20.2006

Содержание LMX2531LQ1910E

Страница 1: ...31LQ1910E Evaluation Board Operating Instructions National Semiconductor Corporation Wireless Communications RF Products Group 2900 Semiconductor Dr Santa Clara CA 95052 8090 LMX2531LQ1910EFPEB Rev 1 20 2006 ...

Страница 2: ...ASE NOISE WITH NARROW LOOP FILTER INTERNAL DIVIDE BY 2 DISABLED 5 PHASE NOISE WITH NARROW LOOP FILTER INTERNAL DIVIDE BY 2 ENABLED 6 SPURS INTERNAL DIVIDE BY 2 DISABLED 7 SPURS INTERNAL DIVIDE BY 2 ENABLED 8 CODELOADER SETTINGS 9 SCHEMATIC 11 BILL OF MATERIALS 12 TOP LAYER 13 MID LAYER 1 GROUND PLANE 14 MID LAYER 2 POWER 15 BOTTOM LAYER SIGNAL 16 TOP BUILD DIAGRAM 17 2 ...

Страница 3: ...port By means of MICROWIRETM serial port emulation the CodeLoader software included can be run on a PC to facilitate the LMX2531LQ1910E internal register programming for the evaluation and measurement In addition to this cable assembly there is a microwire buffer board that ensures that the proper voltage levels are provided to the microwire inputs and also this reduces digital noise from computer...

Страница 4: ... 9 1 0 E E V A L U A T I O N B O A R D O P E R A T I N G I N S T R U C T I O N S Phase Noise Output Frequency 1931 MHz Internal Divide by 2 Disabled DIV2 0 Output Frequency 965 5 MHz Internal Divide by 2 Enabled DIV2 1 4 ...

Страница 5: ...p bandwidth was used with the E5052 spectrum analyzer This is the most accurate and state of the art equipment At lower offsets the measurements are more accurate because the impact of the PLL is removed At higher offsets the measurements are also more accurate because the E5052 spectrum analyzer has a much lower noise floor than the E4445A spectrum analyzer Even though the E4445A has a noise canc...

Страница 6: ...p bandwidth was used with the E5052 spectrum analyzer This is the most accurate and state of the art equipment At lower offsets the measurements are more accurate because the impact of the PLL is removed At higher offsets the measurements are also more accurate because the E5052 spectrum analyzer has a much lower noise floor than the E4445A spectrum analyzer Even though the E4445A has a noise canc...

Страница 7: ...ur at 200 kHz offset at a worst case frequency of 1830 2 MHz is 90 2 dBc Worst case channels occur at exactly one channel spacing above or below a multiple of the crystal frequency 10 MHz Spur at 200 kHz offset at a worst case frequency of 1910 2 MHz is 89 5 dBc Spur at 200 kHz offset at a worst case frequency of 2030 2 MHz is 88 1 dBc 7 ...

Страница 8: ... this mode uses the divide by 2 mode the channel spacing here is actually 100 kHz The spur at 100 kHz could be eliminated by doubling the channel spacing before the divider The reason that the spur at 200 kHz is shown is to illustrate theoretical 6 dB impact of the divider Spur at 200 kHz offset for a frequency of 955 1 MHz is 93 0 dBc Spur at 200 kHz offset for a frequency of 1015 1 MHz is 93 0 d...

Страница 9: ...he default reference oscillator used for these instructions was 10 MHz but there is a mode for a 61 44 MHz oscillator as well If the bits become scrambled their original state may be recalled by choosing the appropriate mode Note that if the internal divide by 2 is enabled the VCO frequency still reflects the VCO frequency before the divide by 2 9 ...

Страница 10: ... in the correct way R5 INIT1 and R5 INIT 2 are just the R5 register being used to properly initialize the part So a single CNT L should load the part The port setup tells CodeLoader what information goes where If this is wrong the part will not program Although LPT1 is usually correct CodeLoader does not autodetect the correct port On some laptops it may be LPT3 10 ...

Страница 11: ... C1 R2 C12 C2 R3 C3 C17 R4 C9 C4 R5 C5 OSCin C13 C18 C20 R7 R23 R22 Ftest LD C15 C22 R1 R9 TRIGGE R GND 1 2 3 4 5 6 7 8 POWER C24 C14 C11 C19 C21 C23 Notethat AnyComponent w ithDesignator 100or HigherisontheBottomSideof theBoard C10 VccDIG 1 NC 2 GND 3 NC 4 NC 5 VregBUF 6 NC 7 DATA 8 CLK 9 LE 10 CE 11 NC 12 NC 13 NC 14 NC 15 VccVCO 16 Vr egVCO 17 Vr ef VCO 18 GND 19 GND 20 Fout 21 VccBUF 22 Vtune ...

Страница 12: ... Panasonic P 22AHCT ND 603 10 0 1W Thick Film 0 22Ω R22 R23 12 2 Vishay CRCW06033R3JRT1 603 5 0 1W Thick Film 3 3Ω R1 R18 13 4 Vishay CRCW0603100JRT1 603 5 0 1W Thick Film 10Ω R2 R3 R4 R5 14 1 Vishay CRCW0603510JRT1 603 5 0 1W Thick Film 51Ω R6 15 4 Vishay CRCW0603103JRT1 603 5 0 1W Thick Film 10KΩ R9 R11 R13 R15 16 5 Vishay CRCW0603123JRT1 603 5 0 1W Thick Film 12KΩ R2pLF R10 R12 R14 R16 17 1 Vis...

Страница 13: ...L M X 2 5 3 1 L Q 1 9 1 0 E E V A L U A T I O N B O A R D O P E R A T I N G I N S T R U C T I O N S Top Layer 13 ...

Страница 14: ...L M X 2 5 3 1 L Q 1 9 1 0 E E V A L U A T I O N B O A R D O P E R A T I N G I N S T R U C T I O N S Mid Layer 1 Ground Plane 15 Mils Down FR4 14 ...

Страница 15: ...L M X 2 5 3 1 L Q 1 9 1 0 E E V A L U A T I O N B O A R D O P E R A T I N G I N S T R U C T I O N S Mid Layer 2 Power 15 ...

Страница 16: ...L M X 2 5 3 1 L Q 1 9 1 0 E E V A L U A T I O N B O A R D O P E R A T I N G I N S T R U C T I O N S Bottom Layer Signal Note Total Board Thickness 61 mils 16 ...

Страница 17: ...L M X 2 5 3 1 L Q 1 9 1 0 E E V A L U A T I O N B O A R D O P E R A T I N G I N S T R U C T I O N S 17 Top Build Diagram ...

Страница 18: ...ency energy and has not been tested for compliance with the limits of computing devices pursuant to part 15 of FCC or ICES 003 rules which are designed to provide reasonable protection against radio frequency interference Operation of the equipment may cause interference with radio communications in which case the user at his own expense will be required to take whatever measures may be required t...

Страница 19: ... its gain should be so chosen that the equivalent isotropically radiated power e i r p is not more than that necessary for successful communication This radio transmitter has been approved by Industry Canada to operate with the antenna types listed in the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated Antenna types not included in this l...

Страница 20: ...er you obtained the Technical Regulations Conformity Certification as provided in Radio Law of Japan with respect to this product Also please do not transfer this product unless you give the same notice above to the transferee Please note that if you could not follow the instructions above you will be subject to penalties of Radio Law of Japan Texas Instruments Japan Limited address 24 1 Nishi Shi...

Страница 21: ... property damage personal injury or death If there are questions concerning these ratings please contact a TI field representative prior to connecting interface electronics including input power and intended loads Any loads applied outside of the specified output range may result in unintended and or inaccurate operation and or possible permanent damage to the EVM and or interface electronics Plea...

Страница 22: ...esponsible for compliance with all legal regulatory and safety related requirements concerning its products and any use of TI components in its applications notwithstanding any applications related information or support that may be provided by TI Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards which anticipate dangerous consequences of failur...

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