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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General Description

the HMC765LP6Ce is a fully functioned Fractional-n Phase-Locked-Loop (PLL) with an Integrated Voltage

Controlled Oscillator (VCO). the input reference frequency range is 100 kHz to 220 MHz while the advanced delta-

sigma modulator design in the fractional PLL allows both ultra-fine step sizes and very low spurious products. the

highly integrated structure provides excellent phase noise performance over temperature, shock and process. the

HMC765LP6Ce is packaged in a leadless QFn 6 x 6 mm surface mount package. the output power is 13 dBm typical,

making the HMC765LP6Ce ideal for driving the LO port of many of Hittite’s Hi Linearity and I/Q mixer products.

For theory of operation and register map refer to the “PLLs w/ Integrated VCO - Microwave VCOs” Operating Guide.

To view the Operating Guide, please visit www.hittite.com and choose HMC765LP6CE from the “Search by Part

Number” pull down menu.

HMC765LP6CE

v03.0411

FRACTIONAL-N PLL WITH

INTEGRATED VCO, 7.8 - 8.8 GHz

Parameter

Condition

Min.

typ.

Max.

Units

RF Output Characteristics

VCO Output Frequency range

7.8

8.3

8.8

gHz

VCO Output Power

10

15

dBm

VCO tuning Voltage

2

13

V

VCO tuning Sensitivity

V

150

MHz/V

Frequency Pulling (into a 2:1 VSWr)

5

MHz pp

Frequency Pushing

V

10

MHz/V

Frequency drift rate

0.9

MHz/ °C

Sub Harmonic (1/2)

35

dBc

10

dBc

32

dBc

VCO SSB Phase noise @ 100 kHz Offset (Open Loop)

V

Fvco = 8.3 gHz

-115

dBc/Hz

Synthesizer In-Band

SSB Phase noise @ 10 kHz Offset (Frac/Int)

Fref = 50 MHz Fvco = 8.3 gHz

Loop BW = 100 kHz

-97 / -101

dBc/Hz

Synthesizer normalized In-Band

SSB Phase noise Floor (Frac/Int)

-221 / -226

dBc/Hz

-65

dBc

Synthesizer Frequency Settling time (100 MHz Step)

From 8.3 gHz to 8.4 gHz

Loop BW = 100 kHz

110

μs

16-Bit divider range (Int)

32

65567

16-Bit divider range (Frac)

36

65535

REF Input Characteristics

Max ref Input Frequency (3.3V)

200

225

MHz

Min ref Input Frequency

100

200

kHz

ref Input Sensitivity

aC Coupled

500

700

mV

pp

Max ref Input

dC Coupled

0

VddIO

V

ref Input Capacitance

5

pF

14-Bit ref divider range

16383

1

VDDPFD, AVDD, RVDD, DVDD, DVDDM, DVDDQ, VDDIO = +3.3V; AGND = DGND = 0V

[1] actual spur level is dependent on loop parameters and will increase at division ratios closest to integer boundaries. number listed is average

value.