主题中讨论的其他器件： LMX2572
我们正在使用 Xilinx 的 CLK104支持板上的 LMX2594 来生成2-12GHz 范围内的音调。 我们 将 通过板上的 LMK04828B 在其 OSCin 引脚上提供芯片 A 250 MHz 信号。
我们 发现、尤其是在功率较高的情况下、当我们 将输出频率配置为5.5-6.5GHz 范围时、会出现普遍的杂散。 我们知道内部 PLL 在设置输出频率后已锁定、并使用"无辅助"模式进行 VCO 校准。
下面是我们看到的频谱图、其中输出配置为6.045GHz、功率代码为31。 我还附加了一个寄存器转储。 在更高的功率下、 我们是否应该 期望看到这些杂散？ 我们乐于提供任何建议或帮助。
R112 = 0xCB
R111 = 0x85
R110 = 0x4A8
R109 = 0x9D7D
R108 = 0xF2
R107 = 0x8801
R106 = 0x0
R105 = 0x21
R104 = 0x0
R103 = 0x0
R102 = 0x3F80
R101 = 0x11
R100 = 0x0
R99 = 0x0
R98 = 0x200
R97 = 0x888
R96 = 0x0
R95 = 0x0
R94 = 0x0
R93 = 0x0
R92 = 0x0
R91 = 0x0
R90 = 0x0
R89 = 0x0
R88 = 0x0
R87 = 0x0
R86 = 0x0
R85 = 0xD300
R84 = 0x1
R83 = 0x0
R82 = 0x1E00
R81 = 0x0
R80 = 0x6666
R79 = 0x26
R78 = 0x3
R77 = 0x0
R76 = 0xC
R75 = 0x800
R74 = 0x0
R73 = 0x3F
R72 = 0x1
R71 = 0x81
R70 = 0xC350
R69 = 0x0
R68 = 0x3E8
R67 = 0x0
R66 = 0x1F4
R65 = 0x0
R64 = 0x1388
R63 = 0x0
R62 = 0x322
R61 = 0xA8
R60 = 0x0
R59 = 0x1
R58 = 0x8001
R57 = 0x20
R56 = 0x0
R55 = 0x0
R54 = 0x0
R53 = 0x0
R52 = 0x820
R51 = 0x80
R50 = 0x0
R49 = 0x4180
R48 = 0x300
R47 = 0x300
R46 = 0x7FC
R45 = 0xC0DF
R44 = 0x1FE1
R43 = 0x9
R42 = 0x0
R41 = 0x0
R40 = 0x0
R39 = 0x19
R38 = 0x0
R37 = 0x204
R36 = 0x30
R35 = 0x4
R34 = 0x0
R33 = 0x1E21
R32 = 0x393
R31 = 0x3EC
R30 = 0x318C
R29 = 0x318C
R28 = 0x488
R27 = 0x2
R26 = 0xDB0
R25 = 0x624
R24 = 0x71A
R23 = 0x7C
R22 = 0x1
R21 = 0x401
R20 = 0xE048
R19 = 0x27B7
R18 = 0x64
R17 = 0x12C
R16 = 0x80
R15 = 0x64F
R14 = 0x1E40
R13 = 0x4000
R12 = 0x5001
R11 = 0x18
R10 = 0x10D8
R9 = 0x604
R8 = 0x2000
R7 = 0x40B2
R6 = 0xC802
R5 = 0xC8
R4 = 0x1943
R3 = 0x642
R2 = 0x500
R1 = 0x80B
R0 = 0x2598
