5

5 - 522

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

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Pin Number

Function

Description

Interface Schematic

1, 5-8, 10-14,

18, 20, 22, 24

N/C

No connection required. These pins may be connected to

RF/DC ground without affecting performance.

2, 4, 15, 17

GND

Package bottom has an exposed metal paddle that must also

be connected to RF/DC ground.

3

RFIN

This pin is AC coupled and matched to 50 Ohms from

21 - 32 GHz.

9

Vgg

Gate control for amplifier. Adjust to achieve Id of 200 mA.

Please follow “MMIC Amplifier Biasing Procedure”

Application Note. External bypass capacitors of 100 pF,

1000 pF and 2.2

16

RFOUT

This pad is AC coupled and matched to 50 Ohms from

21 - 32 GHz.

23, 21, 19

Vdd1, Vdd2, Vdd3

Power Supply Voltage for the amplifier. External bypass

capacitors of 100 pF, 1000pF, and 2.2

Pin Descriptions

Application Circuit

Component

Value

C1

100 pF

C2

1,000 pF

C3

2.2 μF

HMC499LC4

SMT PHEMT MEDIUM

POWER AMPLIFIER, 21 - 32 GHz

v00.1204