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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6 - 1

General Description

Features

Functional Diagram

Typical Applications

7 GHz INTEGER N SYNTHESIZER

(N = 12 - 259)

v03.0709

The hMC698LP5(E) is a frequency synthesizer with

a wideband reversible polarity digital PFD and lock

detect output. The divider operates unconditionally

from 80 - 7000 Mhz with a continuous integer

division ratio of 12 to 259. The hMC698LP5(E) high

frequency operation along with ultra low phase noise

floor make possible synthesizers with wide loop

bandwidth and low N resulting in fast settling and

very low phase noise. When used in conjunction with

a differential loop filter, the hMC698LP5(E) can be

used to phase lock a VCO to a reference oscillator.

Ultra Low ssB Phase Noise Floor:

-153 dBc/hz @ 10 khz offset @ 100 Mhz

Reference Frequency.

Programmable Divider (N= 12 - 259) Operating

up to 7 Ghz

Open Collector Output Buffer Amplifiers for

Interfacing w/ Op-Amp Based Loop Filter

Reversible Polarity PFD w/ Lock Detect Output

The hMC698LP5(E) is ideal for:

• satellite Communication systems

• Point-to-Point Radios

• Military Applications

• sonet Clock Generation

Parameter

Conditions

Min.

Typ.

Max.

Units

Maximum Ref. Input Frequency

1300

Mhz

Minimum Ref. Input Frequency

10

Mhz

Reference Input Power Range

100 Mhz Frequency

-5

+5

dBm

Maximum VCO Input Frequency

7000

Mhz

Minimum VCO Input Frequency

80

Mhz

VCO Input Power Range

100 Mhz Input Frequency

-10

+5

dBm

PFD Output Voltage

2000

mV, Pk - Pk

PFD Gain

Gain = Vpp / 2π Rad.

0.32

V/Rad.

ssB Phase Noise

@ 10 khz Offset @ 100 Mhz square Wave Ref. Input

Pin= 0 dBm

-153

dBc/hz

Total supply Current

310

mA

[1] Maximum frequencies may be limited by available counter division ratio.

[2] square wave input achieves best phase noise at lower ref. frequency (see sine & square wave comparison plots)