ADF4351 datasheet(9/28 Pages) AD

9 / 28 page

Data Sheet

ADF4351

Rev. 0 | Page 9 of 28

TYPICAL PERFORMANCE CHARACTERISTICS

–160

–150

–140

–120

–100

–80

–130

–110

–90

–70

–60

–50

–40

10k

100k

10M

FREQUENCY (Hz)

Figure 4. Open-Loop VCO Phase Noise, 2.2 GHz

–160

–150

–140

–120

–100

–80

–130

–110

–90

–70

–60

–50

–40

10k

100k

10M

FREQUENCY (Hz)

Figure 5. Open-Loop VCO Phase Noise, 3.3 GHz

–160

–150

–140

–120

–100

–80

–130

–110

–90

–70

–60

–50

–40

10k

100k

10M

FREQUENCY (Hz)

Figure 6. Open-Loop VCO Phase Noise, 4.4 GHz

–170

–160

–150

–140

–130

–120

–110

–100

–90

10k

100k

10M

FREQUENCY (Hz)

DIV1

DIV2

DIV4

DIV8

DIV16

DIV32

DIV64

Figure 7. Closed-Loop Phase Noise, Fundamental VCO and Dividers,

VCO = 2.2 GHz, PFD = 25 MHz, Loop Filter Bandwidth = 63 kHz

–170

–160

–150

–140

–130

–120

–110

–100

–90

10k

100k

10M

FREQUENCY (Hz)

DIV1

DIV2

DIV4

DIV8

DIV16

DIV32

DIV64

Figure 8. Closed-Loop Phase Noise, Fundamental VCO and Dividers,

VCO = 3.3 GHz, PFD = 25 MHz, Loop Filter Bandwidth = 63 kHz

–170

–160

–150

–140

–130

–120

–110

–100

–90

10k

100k

10M

FREQUENCY (Hz)

DIV1

DIV2

DIV4

DIV8

DIV16

DIV32

DIV64

Figure 9. Closed-Loop Phase Noise, Fundamental VCO and Dividers,

VCO = 4.4 GHz, PFD = 25 MHz, Loop Filter Bandwidth = 63 kHz

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