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

HMC831LP6CE

v05.1211

FRACTIONAL-N PLL WITH

INTEGRATED VCO, 1815 - 2010 MHz

Typical Closed Loop Fractional Phase

Closed Loop Integer Phase Noise

VCO Free Running Phase Noise

Typical Tuning Curves vs. Switch Position

[1] Fractional Mode, 50 MHz Crystal, R=1, ~80 kHz Loop BW, (Loop filter values: Contact factory for component values) 2mA Charge Pump, -385µA

Offset.

-180

-170

-160

-150

-140

-130

-120

-110

-100

-90

-80

-70

10

2

10

3

10

4

10

5

10

6

10

7

10

8

1800 MHz

1900 MHz

2000 MHz

FREQUENCY OFFSET (Hz)

Parameter

Condition

Min.

Typ.

Max.

Units

Fractional, 50 MHz PFD

1 kHz Offset

-103

dBc/Hz

Fractional, 50 MHz PFD

10 kHz Offset

-107

dBc/Hz

Fractional, 50 MHz PFD

100 kHz Offset

-112

dBc/Hz

Figure of Merit

Normalized 1 Hz

Integer Mode

Measured w/ 50 MHz PD

at 30 kHz Offset

-229

dBc/Hz

Fractional Mode

Measured w/ 50 MHz PD

at 30 kHz Offset

-227

dBc/Hz

-180

-170

-160

-150

-140

-130

-120

-110

-100

-90

-80

-70

10

2

10

3

10

4

10

5

10

6

10

7

10

8

1815 MHz

1910 MHz

2010 MHz

FREQUENCY OFFSET (Hz)

-180

-160

-140

-120

-100

-80

-60

-40

-20

10

2

10

3

10

4

10

5

10

6

10

7

10

8

1800 MHz

1900 MHz

2000 MHz

OFFSET FREQUENCY (Hz)

01

23

45

TUNING VOLTAGE (V)

n0

n2

n4

n6

n8

n10

n12

n14

n16

n18

n20

n22

n24

n26

n30

fmax

fmin

n30

n31

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

For price, delivery, and to place orders: Analog Devices, Inc.,

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106

Phone: 781-329-4700 • Order online at www.analog.com

Application Support: Phone: 1-800-ANALOG-D