Other Parts Discussed in Thread: , LMX2594
Hi,
I'm using the LMX8410L's LO as output. I have the LMX8410LEVM board. I put 50ohm resistors on the board as LO pull-up. According to the datasheet Fig 44, shall I expect 2dBm output power at 6GHz? However, my SA only shows about -5.9dBm at the peak. Did I missed something in this test? I also gathered using inductors as pull-up can generate more powerful output. What value would be recommended for 6GHz?
Many thanks,
David
PS. IIRC, it is said that there is an LMX2594 inside LMX8410, but I found the LO output specification quite different between these two components.
The LMX8410 register data enclosed
R127 (INIT1) 0x7F0003 R6 (INIT2) 0x060100 R127 0x7F0000 R126 0x7E8000 R125 0x7D0000 R124 0x7C0000 R123 0x7B0000 R122 0x7A0000 R121 0x790000 R120 0x780000 R118 0x760000 R117 0x7500C0 R116 0x740000 R115 0x730F00 R114 0x720000 R113 0x710000 R112 0x700000 R111 0x6F0000 R110 0x6E0000 R109 0x6D0000 R108 0x6C0000 R107 0x6B0000 R106 0x6A0000 R103 0x672C00 R102 0x660000 R101 0x650002 R100 0x640002 R99 0x630000 R98 0x620000 R97 0x610000 R96 0x609218 R95 0x5F0000 R94 0x5E8080 R93 0x5D0000 R88 0x580003 R87 0x570000 R86 0x560000 R85 0x550000 R84 0x541900 R83 0x530020 R82 0x520A23 R81 0x510310 R80 0x500009 R79 0x4F0000 R78 0x4E0064 R77 0x4D0000 R76 0x4C000C R75 0x4B0800 R74 0x4A0000 R73 0x49003F R72 0x480001 R71 0x470081 R70 0x46C350 R69 0x450000 R68 0x4403E8 R67 0x430000 R66 0x4201F4 R65 0x410000 R64 0x401388 R63 0x3F0000 R62 0x3E0022 R61 0x3D00A8 R60 0x3C03E8 R59 0x3B0001 R58 0x3A8001 R57 0x390000 R56 0x380000 R55 0x370000 R54 0x360000 R53 0x350000 R52 0x340820 R51 0x330080 R50 0x320000 R49 0x314180 R48 0x300300 R47 0x2F0300 R46 0x2E07FC R44 0x2C1F22 R43 0x2B0000 R42 0x2A0000 R41 0x290000 R40 0x280000 R39 0x272710 R38 0x260000 R37 0x258204 R36 0x240078 R35 0x230004 R34 0x220000 R33 0x211E21 R32 0x200393 R31 0x1F43EC R30 0x1E318C R29 0x1D318C R28 0x1C0488 R27 0x1B0002 R26 0x1A0DB0 R25 0x190624 R24 0x18071A R23 0x17007C R22 0x160001 R21 0x150401 R19 0x1327B7 R18 0x120064 R17 0x1100FA R16 0x100080 R15 0x0F064F R14 0x0E13F0 R13 0x0D4000 R12 0x0C5001 R11 0x0B0018 R10 0x0A10D8 R9 0x090604 R8 0x082000 R7 0x0700B2 R6 0x06C802 R5 0x0500C8 R4 0x041943 R3 0x030642 R2 0x020500 R1 0x01080B R0 0x002010