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

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7 - 4

HMC828LP6CE

v04.1010

FRACTIONAL-N SYNTHESIZER WITH

INTEGRATED VCO, 1285 - 1415 MHz

Typical Closed Loop Fractional Phase

Typical VCO Tuning Curves vs. Switch

Position

Closed Loop Integer Phase Noise

VCO Free Running Phase Noise

[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.

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

10

2

10

3

10

4

10

5

10

6

10

7

10

8

1250 MHz

1350 MHz

FREQUENCY OFFSET (Hz)

-180

-170

-160

-150

-140

-130

-120

-110

-100

-90

-80

10

2

10

3

10

4

10

5

10

6

10

7

10

8

1285 MHz

1345 MHz

FREQUENCY OFFSET (Hz)

0

1

2

3

4

5

TUNING VOLTAGE (V)

n0

n2

n4

n6

n8

n10

n12

n14

n16

n18

n20

n22

n24

n26

n30

fmax

fmin

n30

n31

-180

-160

-140

-120

-100

-80

-60

-40

-20

100

1000

10

4

10

5

10

6

10

7

10

8

1275 MHz

1350 MHz

1450 MHz

FREQUENCY OFFSET (Hz)