Datasheet

AD9522-3
Rev. 0 | Page 20 of 84
TYPICAL PERFORMANCE CHARACTERISTICS
275
250
225
200
175
150
125
100
75
0 200 400 600 800 1000
CURRENT (mA)
FREQUENCY (MHz)
3 CHANNELS—6 LVDS
3 CHANNELS—3 LVDS
2 CHANNELS—2 LVDS
1 CHANNEL—1 LVDS
07224-108
Figure 6. Total Current vs. Frequency, CLK-to-Output (PLL Off), Channel and
VCO Divider Bypassed, LVDS Outputs Terminated 100 Ω Across Differential Pair
240
220
200
180
160
140
120
100
80
0 50 100 150 200 250
CURRENT (mA)
FREQUENCY (MHz)
2 CHANNELS—8 CMOS
2 CHANNELS—2 CMOS
1 CHANNEL—2 CMOS
1 CHANNEL—1 CMOS
07224-109
Figure 7. Total Current vs. Frequency, CLK-to-Output (PLL Off), Channel and
VCO Divider Bypassed, CMOS Outputs with 10 pF Load
70
65
60
55
50
45
40
35
30
25
1.7 1.8 1.9 2.0 2.1 2.2 2.3
K
VCO
(MHz/V)
VCO FREQUENCY (GHz)
07224-010
Figure 8. K
VCO
vs. VCO Frequency
5
4
3
2
1
0
033.02.52.01.51.00.5
CURRENT FROM CP PIN (mA)
VOLTAGE ON CP PIN (V)
.5
PUMP UPPUMP DOWN
07224-111
Figure 9. Charge Pump Characteristics @ VCP = 3.3 V
5
4
3
2
1
0
054.03.0 4.53.52.52.01.51.00.5
CURRENT FROM CP PIN (mA)
VOLTAGE ON CP PIN (V)
.0
PUMP DOWN PUMP UP
07224-112
Figure 10. Charge Pump Characteristics @ VCP = 5.0 V
–
140
–145
–150
–155
–160
–165
–170
0.1 1 10010
PFD PHASE NOISE REFERRED TO PFD INPUT
(dBc/Hz)
PFD FREQUENCY (MHz)
07224-013
Figure 11. PFD Phase Noise Referred to PFD Input vs. PFD Frequency