adf4196 Analog Devices, Inc., adf4196 Datasheet - Page 10

• Manufacturer Part Number: adf4196
• Description: Low Phase Noise, Fast Settling, 6 Ghz Pll Frequency Synthesizer
• Manufacturer: Analog Devices, Inc.

ADF4196
Figure 17. On Resistance of the SW1, SW2, and SW3 Loop Filter Switches
1000
100
100
10
90
80
70
60
50
40
30
20
10
1
0
1k
0
Figure 16. Voltage Noise Density Measured at the
SW1,
SW2
+85°C
+25°C
–40°C
1
Differential Amplifier Output
10k
7nV/ Hz @ 20kHz
DRAIN VOLTAGE (V)
2
FREQUENCY (Hz)
TUNING VOLTAGE RANGE
+25°C
SW3
100k
+85°C
3
–40°C
4
1M
5
10M
Rev. B | Page 10 of 28
Figure 18. Detected RF Output Phase for Phase Code Sweep from 0 to MOD
INTERVAL BETWEEN R0 WRITES SHOULD BE A MULTIPLE OF MOD
REFERENCE CYCLES (5µs) FOR COHERENT PHASE MEASUREMENTS
GENERATOR
1.8
1.5
1.2
0.9
0.6
0.3
SIGNAL
0
Figure 19. Test Setup for Phase Lock Time Measurements
0
104MHz
5dBm
MEASURED USING AD8302 PHASE DETECTOR
Y-AXIS SCALE: 10mV/DEGREE
RF = 1880MHz, PFD = 26MHz, MOD = 130
X-AXIS SCALE: 2.77°/STEP
EXT REF
10MHz
13
REF
26
EVAL BOARD
IN
GENERATOR
ADF4193
SIGNAL
RF
39
INPA
INPB
OUT
1805MHz
1880MHz
52
PHASE CODE
AD8302
VPHS
EVB
65
1880MHz
78
OSCILLOSCOPE
91
Data Sheet
104
117
130