ML12179
Legacy Applications Information
LANSDALE Semiconductor, Inc.
Figure 13. VCO Output Spectrum with ML12179, V CC = 5.0 V
(ECLiPTEK 8.9 MHz Crystal and ZCOM 2500 VCO)
NOTE: Spurs can be reduced further by narrowing the loop bandwidth of the PLL loop filter and/or
adding an extra filter (Rx/Cx)
HP 3048A
0
Figure 14. Typical Phase Noise Plot, 2200 MHz VCO
(With the ML12179 in a Closed Loop)
CARRIER
2200MHz
25
50
75
100
125
150
170
1k
10k
100k
1M
10M
40M
(f) [dBc/Hz] vs f[Hz]
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