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LMX2491: I want configuration generate 1500mhz sine wave in vco in TICS Pro

kathiravan chinnadurai
Prodigy 20 points
Part Number: LMX2491

I want configuration  generate 1500mhz sine wave in vco in TICS Pro

but i am unable to generate in  loaded exported values .

can anyone please help me.

  • 0
    TI__Mastermind 18950 points

    Hi Kathiravan,

    We have paged our device expert, but he is currently out of the office on travel and there may be some delay in his response.

    kathiravan chinnadurai said:
    i am unable to generate in  loaded exported values

    Can you clarify what you mean by this? Are you having problems generating a configuration that produces 1500 MHz or are you having problems exporting this configuration?

    Best,

    Evan Su

  • 0 in reply to Evan Su
    Prodigy 20 points

    Hi yes 

    Fullscreen HexRegisterValuesktrs.txt Download 
    R141	0x008D00
R140	0x008C00
R139	0x008B00
R138	0x008A00
R137	0x008900
R136	0x008800
R135	0x008700
R134	0x008600
R133	0x008500
R132	0x008400
R131	0x008300
R130	0x008200
R129	0x008100
R128	0x008000
R127	0x007F00
R126	0x007E00
R125	0x007D00
R124	0x007C00
R123	0x007B00
R122	0x007A00
R121	0x007900
R120	0x007800
R119	0x007700
R118	0x007600
R117	0x007500
R116	0x007400
R115	0x007300
R114	0x007200
R113	0x007100
R112	0x007000
R111	0x006F00
R110	0x006E00
R109	0x006D00
R108	0x006C00
R107	0x006B00
R106	0x006A00
R105	0x006900
R104	0x006800
R103	0x006700
R102	0x006600
R101	0x006500
R100	0x006400
R99	0x006300
R98	0x006200
R97	0x006100
R96	0x006000
R95	0x005F00
R94	0x005E00
R93	0x005D00
R92	0x005C00
R91	0x005B00
R90	0x005A00
R89	0x005900
R88	0x005800
R87	0x005700
R86	0x005600
R85	0x005500
R84	0x005400
R83	0x005300
R82	0x005200
R81	0x005100
R80	0x005000
R79	0x004F00
R78	0x004E00
R77	0x004D00
R76	0x004C00
R75	0x004B00
R74	0x004A00
R73	0x004900
R72	0x004800
R71	0x004700
R70	0x00461B
R69	0x004500
R68	0x004400
R67	0x004300
R66	0x004200
R65	0x004100
R64	0x004000
R63	0x003F00
R62	0x003E00
R61	0x003D00
R60	0x003C00
R59	0x003B00
R58	0x003A00
R57	0x003900
R45	0x002D00
R44	0x002C00
R43	0x002B00
R42	0x002A00
R41	0x002900
R40	0x002800
R39	0x002752
R38	0x002618
R37	0x002510
R36	0x002408
R35	0x002341
R34	0x002204
R33	0x002120
R32	0x002000
R31	0x001F32
R30	0x001E0A
R29	0x001D00
R28	0x001C1F
R27	0x001B08
R26	0x001A00
R25	0x001901
R24	0x001800
R23	0x001703
R22	0x0016E8
R21	0x001500
R20	0x001401
R19	0x0013F4
R18	0x00122C
R17	0x001100
R16	0x001025
R15	0x000F00
R14	0x000E00
R13	0x000D00
R12	0x000C00
R11	0x000B00
R10	0x000A00
R9	0x000900
R8	0x000800
R7	0x000700
R6	0x000600
R5	0x000500
R4	0x000400
R3	0x000300
R2	0x000201
R1	0x000100
R0	0x000018

    above values i am writing to LMX2491 But i am unable to get the output .

    Can you please suggest  do we have any configuration from TICS pro which generates 1500mhz sine in VCO or any normal operation configuration

  • 0 in reply to kathiravan chinnadurai
    TI__Guru** 108480 points

    Hi Kathiravan,

    Is your reference clock = 40MHz? Is it a TCXO or not? How did you connect this clock to LMX2491?

    Have you tried POWERDOWN the PLL, did you see a significant current drop?