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AA022N1-00

21–24 GHz GaAs MMIC Low Noise Amplifier

Alpha Industries 

21–24 GHz GaAs MMIC

Low Noise Amplifier

Features

I Single Bias Supply Operation (4.5 V)

I 2.6 dB Typical Noise Figure at 23 GHz

I 19 dB Typical Small Signal Gain

I 0.25 µm Ti/Pd/Au Gates

I 100% On-Wafer RF, DC and Noise

Figure Testing

I 100% Visual Inspection to MIL-STD-883

MT 2010

Chip Outline

1.250

1.172

0.493

0.087

0.000

AA022N1-00

1.162

0.124

0.087

Description

Alpha’s three-stage reactively-matched 21–24 GHz

MMIC low noise amplifier has typical small signal gain of

19 dB with a typical noise figure of 2.6 dB at 23 GHz.

The chip uses Alpha’s proven 0.25 µm low noise PHEMT

technology, and is based upon MBE layers and electron

beam lithography for the highest uniformity and

repeatability. The FETs employ surface passivation to

ensure a rugged reliable part with through-substrate via

holes and gold-based backside metallization to facilitate

a conductive epoxy die attach process.

Dimensions indicated in mm.

All DC (V) pads are 0.1 x 0.1 mm and RF In, Out pads are 0.07 mm wide.

Chip thickness = 0.1 mm.

Absolute Maximum Ratings

Characteristic

Operating Temperature (TC)

Storage Temperature (TST)

Bias Voltage (VD)

Power In (PIN)

Junction Temperature (TJ)

Value

-55°C to +90°C

-65°C to +150°C

6 VDC

10 dBm

175°C

Electrical Specifications at 25°C (VDS = 4.5 V)

Parameter

Condition

Drain Current

Small Signal Gain

F = 21–24 GHz

Noise Figure

F = 23 GHz

Input Return Loss

F = 21–24 GHz

Output Return Loss

Output Power at 1 dB Gain Compression1

Thermal Resistance2

F = 21–24 GHz

F = 23 GHz

1. Not measured on a 100% basis.

2. Calculated value based on measurement of discrete FET.

3. Typical represents the median parameter value across the specified

frequency range for the median chip.

Symbol

IDS

G

NF

RLI

RLO

P1 dB

ΘJC

Min.

16

Typ.3

35

19

2.6

-7

-14

8

92

Max.

50

2.8

-6

-10

Unit

mA

dB

dB

dB

dB

dBm

°C/W

Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com

1

Specifications subject to change without notice. 12/99A

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