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

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9

9 - 12

Application Circuit

Pin Descriptions

Pin Number

Function

Description

Interface Schematic

1, 2, 4 - 9,

11 - 16

N/C

This pin may be connected to RF ground.

3RFIN

This pin is DC coupled.

An off chip DC blocking capacitor is required.

10

RFOUT

RF output and DC Bias for the output stage.

GND

Package bottom must be connected to RF/DC ground.

Recommended Component Values

Component

Frequency (MHz)

50

900

1900

2200

2400

3500

5200

5800

L1

270 nH

56 nH

18 nH

18 nH

15 nH

8.2 nH

3.3 nH

3.3 nH

C1, C2

0.01 μF

100 pF

100 pF

100 pF

100 pF

100 pF

100 pF

100 pF

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 - 3.8

Rbias

HMC311LP3 / 311LP3E

v04.1108

InGaP HBT GAIN BLOCK

MMIC AMPLIFIER, DC - 6 GHz