For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343

Fax: 978-250-3373

Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

7

7 - 4

HMC765LP6CE

v03.0411

FRACTIONAL-N PLL WITH

INTEGRATED VCO, 7.8 - 8.8 GHz

SSB Phase Noise vs. Frequency,

Integer Mode

SSB Phase Noise vs. Temperature

@ 8.3 GHz, Integer Mode

SSB Phase noise vs. Reference Freq. &

Loop BW @ 8.3 GHz, Integer Mode

SSB Phase Noise Fractional

Spurs @ 8.302 GHz

Example of Cycle Slip Prevention Hop

from 8.6 to 8.1 GHz

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-120

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-90

-80

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-60

10

2

10

3

10

4

10

5

10

6

10

7

7800 MHz

8300 MHz

8800 MHz

OFFSET FREQUENCY (Hz)

Temp = 25C

Fref = 50 MHz

Loop BW = 100 kHz

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-90

-80

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-60

10

2

10

3

10

4

10

5

10

6

10

7

Fref = 10MHz

Loop BW= 10kHz

Fref = 50MHz

Loop BW=100kHz

OFFSET FREQUENCY (Hz)

10

2

10

3

10

4

10

5

10

6

10

7

-150

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-100

-90

-80

-70

-60

OFFSET FREQUENCY (Hz)

Temp = 25C

Fref = 50MHz

Loop BW = 100kHz

-10

0

10

20

30

40

50

60

70

80

90 100 110 120

8

8.1

8.2

8.3

8.4

8.5

8.6

8.7

TIME (μSEC)

CSP ON

CSP OFF

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10

2

10

3

10

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10

5

10

6

10

7

+25C

+85C

-40C

OFFSET FREQUENCY (Hz)

Fref = 50 MHz

Loop BW = 100 kHz

Typical Reference Sensitivity

-50

-40

-30

-20

-10

0

10

20

0

50

100

150

200

250

300

FREQUENCY (MHz)

R = Max, +25C

R = 3, +85C

R = Max, +85C

R = 3, +25C

[1] r refers to the reference path division ratio