For price, delivery, and to place orders, please contact Hittite Microwave Corporation:

20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373

Order On-line at www.hittite.com

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General Description

The HMC765LP6CE is a fully functioned Fractional-N Phase-Locked-Loop (PLL) Frequency Synthesizer 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 synthesizer 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 6x6 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

v02.0110

FRACTIONAL-N SYNTHESIZER 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

213

V

VCO Tuning Sensitivity

V

TUNE

= +5V

150

MHz/V

Frequency Pulling (into a 2:1 VSWR)

5MHz pp

Frequency Pushing

V

TUNE

= +5V

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

TUNE

= +5V

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

us

16-Bit Divider Range (Int)

N Divider Ratio 2

32

65567

16-Bit Divider Range (Frac)

N Divider Ratio 2

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.