MICROWAVE CORPORATION

15 - 50

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15

HMC398QS16G

Ku-Band MMIC VCO with

DIVIDE-BY-8, 14.0 - 15.0 GHz

v01.0302

General Description

Features

Functional Diagram

The HMC398QS16G is a single chip GaAs

InGaP Heterojunction Bipolar Transistor (HBT)

MMIC VCO. The HMC398QS16G integrates a

resonator, negative resistance device, varac-

tor diode and divide-by-8 prescaler. The VCO’s

phase noise performance is excellent over tem-

perature, shock, and process due to the oscilla-

tor’s monolithic structure. Power output is +7 dBm

typical from a 5V supply voltage. The voltage

controlled oscillator is packaged in a low cost,

surface mount 16 leaded QSOP package with

an exposed base for improved RF and thermal

performance. The HMC398QS16G requires no

external components

Pout: +7 dBm

Phase Noise: -105 dBc/Hz @100 KHz Typ.

No External Resonator Needed

Single Supply: 5V @ 325 mA

QSOP16G SMT Package

Typical Applications

Low noise MMIC VCO w/Divide-by-8

for Ku-Band applications such as:

• Pt to Pt Radios

• Multi-Pt Radios / LMDS

• VSAT

Parameter

Min.

Typ.

Max.

Units

Frequency Range

14.0 - 15.0

GHz

Power Output

RF Output

Divided Output

+3

-9

+7

-6

dBm

dBm

SSB Phase Noise @ 100 kHz Offset, Vtune= +5V @ RF Output

-105

dBc/Hz

Tune Voltage

Vtune

1.0

10.0

V

Supply Current

Icc 1 (Digital)

Icc 2 (RF)

65

260

mA

mA

Tune Port Leakage Current (Vtune= 10V)

10

µA

Output Return Loss

2dB

Harmonics/Subharmonics

1/2

3/2

2nd

5/2

-20

-30

-12

-40

dBc

dBc

dBc

dBc

Pulling (into a 2.0:1 VSWR)

4

MHz pp

Pushing @ Vtune= 5V

30

MHz/V

Frequency Drift Rate

1.5

MHz/°C