2

2 - 18

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

Recommended Component Values

Component

Frequency (MHz)

50

1000

3000

7000

L1

270 nH

56 nH

8.2 nH

2.2 nH

C1, C2

0.01 μF

100 pF

100 pF

100 pF

Application Circuit

Pad Number

Function

Description

Interface Schematic

1RFIN

This pin is DC coupled.

An off chip DC blocking capacitor is required.

2RFOUT

RF output and DC Bias for the output stage.

Die

Bottom

GND

Die bottom must be connected to RF/DC ground.

Pad Descriptions

Note:

1. Select Rbias to achieve Icq using equation below,

Rbias > 22 Ohm.

2. External blocking capacitors are required on

RFIN and RFOUT.

Icq = Vs - 3.9

Rbias

HMC397

v03.0109

InGaP HBT GAIN BLOCK

MMIC AMPLIFIER, DC - 10 GHz

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