EVAL-ADF4193EB1(RevB) Ver la hoja de datos (PDF) - Analog Devices

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EVAL-ADF4193EB1
(Rev.:RevB)

Low Phase Noise, Fast Settling PLL Frequency Synthesizer

Analog Devices 

ADF4193

1000

100

7nV/ Hz @ 20kHz

10

1

1k

10k

100k

1M

10M

FREQUENCY (Hz)

Figure 16. Voltage Noise Density Measured at the Differential Amplifier Output

100

90

SW1/

80 SW2

+85°C

70

+25°C

60

–40°C

SW3

+85°C

+25°C

50

–40°C

40

TUNING VOLTAGE RANGE

30

20

10

0

0

1

2

3

4

5

DRAIN VOLTAGE (V)

Figure 17. On Resistance of Loop Filter Switches SW1/SW2 and SW3

1.8

MEASURED USING AD8302 PHASE DETECTOR

Y-AXIS SCALE: 10mV/DEGREE

RF = 1880MHz, PFD = 26MHz, MOD = 130

1.5 X-AXIS SCALE: 2.77°/STEP

1.2

0.9

0.6

0.3

0

0 13 26 39 52 65 78 91 104 117 130

PHASE CODE

Figure 18. Detected RF Output Phase for Phase Code Sweep from 0 to MOD

104MHz

5dBm

ADF4193

EVAL BOARD

REFIN RFOUT

1805

1880MHz

AGILENT

HP8663A

SIG. GEN.

10MHz

EXT REF

INPA

VPHS

INPB

AD8302

EVB

1880MHz

R&S

SMT03

SIG. GEN.

TEKTRONIX

TDS714L

OSCILLOSCOPE

INTERVAL BETWEEN R0 WRITES SHOULD BE A MULTIPLE OF MOD

REFERENCE CYCLES (5µs) FOR COHERENT PHASE MEASUREMENTS

Figure 19. Test Setup for Phase Lock Time Measurement

Rev. B | Page 10 of 28

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