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AA035P3-00

31–35 GHz GaAs MMIC Driver Amplifier

Alpha Industries 

31–35 GHz GaAs MMIC

Driver Amplifier

Features

s Single Bias Supply Operation (5 V)

s 19 dB Typical Small Signal Gain

s 17 dBm Typical P1 dB Output Power

at 35 GHz

s 0.25 µm Ti/Pd/Au Gates

s 100% On-Wafer RF and DC Testing

s 100% Visual Inspection to MIL-STD-883

MT 2010

Chip Outline

1.905

0.000

AA035P3-00

1.250

Description

Alpha’s three-stage reactively-matched Ka band GaAs

MMIC driver amplifier has a typical P1 dB of 17 dBm with

18 dB associated gain at 35 GHz. The chip uses Alpha’s

proven 0.25 µm MESFET technology, which 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 solder or epoxy die attach

processes. The amplifier is a self-bias design requiring a

single positive drain bias to one of any three bonding sites.

All chips are screened for S-parameters prior to shipment

for guaranteed performance. A broad range of

applications exist in both the high reliability and

commercial areas where high gain and power are

required.

Electrical Specifications at 25°C (VDS = 5 V)

Parameter

Condition

Drain Current

Small Signal Gain

Noise Figure1

F= 31–35 GHz

F= 35 GHz

Input Return Loss

F= 31–35 GHz

Output Return Loss

F= 31–35 GHz

Output Power at 1 dB Gain Compression

F= 35 GHz

Saturated Output Power

Thermal Resistance2

F= 35 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.

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

7 VDC

19 dBm

175°C

Symbol

IDS

G

NF

RLI

RLO

P1 dB

PSAT

ΘJC

Min.

15

15

16

Typ.3

275

19

10.5

-14

-16

17

19

66

Max.

350

-10

-10

Unit

mA

dB

dB

dB

dB

dBm

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. 1/01A

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