HMC701LP6CE Datasheet, PDF (31/40 Pages) Hittite Microwave Corporation – 8 GHz 16-Bit Fractional-N Synthesizer

v09.1112
HMC701LP6CE
8 GHz 16-BIT FRACTIONAL-N PLL
Table 19. Reg 08h Charge Pump Trim & Offset Register
Bit
Type
Name
Default
Description
3:0
R/W cp_UPtrim_sel
0
Trim Up gain, 14.3uA lsb, binary, 100uA max
Program 0
7:4
R/W cp_DNtrim_sel
0
Trim Dn gain, 14.3uA lsb, binary, 100uA max
Program 0
11:8
R/W cp_UPoffset_sel
15:12
17:16
R/W cp_DNoffset_sel
R/W cp_amp_bias_sel
Up Offset leakage current, 28.7uA lsb, binary,
4h
430uA max Program as needed. See Charge
Pump Phase Offset
Dn Offset leakage current, 28.7uA , binary,
0
430uAmax Program as needed. See Charge
Pump Phase Offset
2h
Charge Pump Dummy Branch Op amp bias
selection, 100uA Program 10
Table 20. Reg 09h Charge Pump EN Register
Bit
Type
Name
Default
0
R/W cp_pull_updn_en
0
1
R/W cp_pull_dn_upb
0
Description
Enables CP UP/Down Control Reg09
0 - Forces Charge Pump Up when Reg09[0]=1
1 - Forces Charge Pump DN when Reg09[0]=1
Table 21. Reg 0Ah Reserved
Bit
Type
Name
23:0
R/W Reserved
Default
304h
Reserved
Description
Table 22. Reg 0Bh Reserved
Bit
Type
Name
23:0
R/W Reserved
Default
0
Reserved
Description
Table 23. Reg 0Ch Reserved
Bit
Type
Name
23:0
R/W Reserved
Default
100h
Reserved
Description
Table 24. Reg 0Dh Reserved
Bit
Type
Name
23:0
R/W Reserved
Default
20h
Reserved
Description
31
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