ADF4157_15 datasheet(8/24 Pages) AD

номер детали	ADF4157

подробное описание детали	High Resolution 6 GHz Fractional-N Frequency Synthesizer

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ADF4157

Data Sheet

Rev. D | Page 8 of 24

TYPICAL PERFORMANCE CHARACTERISTICS

PFD = 25 MHz, loop bandwidth = 20 kHz, reference = 100 MHz, ICP = 313 μA, phase noise measurements taken on the Agilent E5052A

phase noise system.

10

–40

0

9

FREQUENCY (GHz)

5

0

–5

–10

–15

–20

–25

–30

–35

1

2

3

4

5

6

7

8

P = 4/5

P = 8/9

Figure 5. RF Input Sensitivity

0

–40

0

500

FREQUENCY (MHz)

–5

–10

–15

–20

–25

–30

–35

100

200

300

400

VDD = 3V

Figure 6. Reference Input Sensitivity

0

–160

1k

10M

FREQUENCY (Hz)

–20

–40

–60

–80

–100

–120

–140

10k

100k

1M

RF = 5800.25MHz, PFD = 25MHz, N = 232,

FRAC = 335544, FREQUENCY RESOLUTION = 0.74Hz,

20kHz LOOP BW, ICP = 313µA, DSB INTEGRATED PHASE

ERROR = 0.97° RMS, PHASE NOISE @ 2kHz = –87dBc/Hz.

Figure 7. Phase Noise and Spurs

(Note that the 250 kHz spur is an integer boundary spur; see the Spur

Mechanisms section for more information.)

6.00

5.65

–100

900

TIME (µs)

5.95

5.90

5.85

5.80

5.75

5.70

0

100

200

300

400

500

600

700

800

CSR OFF

CSR ON

Figure 8. Lock Time for 200 MHz Jump from 5705 MHz to 5905 MHz

with CSR On and Off

5.65

5.60

5.95

5.90

5.85

5.80

5.75

5.70

–100

900

TIME (µs)

0

100

200

300

400

500

600

700

800

CSR ON

CSR OFF

Figure 9. Lock Time for 200 MHz Jump from 5905 MHz to 5705 MHz

with CSR On and Off

6

–6

0

5.0

VCP (V)

4

2

0

–2

–4

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

Figure 10. Charge Pump Output Characteristics, Pump Up and Pump Down

Аналогичный номер детали - ADF4157_15

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Аналогичное описание - ADF4157_15

производитель	номер детали	датащи	подробное описание детали
Analog Devices	ADF4157	399Kb / 20P	High Resolution 6 GHz Fractional-N Frequency Synthesizer REV. 0
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Cirrus Logic	CS2200-CP	218Kb / 26P	Fractional-N Frequency Synthesizer
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