Cascadable Amplifier

20 to 500 MHz

A81-3/ SMA81-3

M/A-COM Inc. and its affiliates reserve the right to make changes to the

product(s) or information contained herein without notice. M/A-COM makes

no warranty, representation or guarantee regarding the suitability of its

products for any particular purpose, nor does M/A-COM assume any liability

whatsoever arising out of the use or application of any product(s) or

information.

• North America Tel: 800.366.2266 / Fax: 978.366.2266

• Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300

• Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298

Visit www.macom.com for additional data sheets and product information.

V2

1

Ω

Ω

Parameter

Units

Typical

Guaranteed

25ºC

0º to 50ºC

-54º to +85ºC*

Frequency

MHz

10-500

20-500

20-500

Small Signal Gain (min)

dB

17.0

16.0

15.5

Gain Flatness (max)

dB

±0.2

±0.5

±0.7

Reverse Isolation

dB

36

Noise Figure (max)

dB

4.0

4.5

5.0

Power Output

@ 1 dB comp. (min)

dBm

8.0

7.5

7.0

IP3

dBm

+20

IP2

dBm

+28

Second Order Harmonic IP

dBm

+32

VSWR Input / Output (max)

1.5:1 / 1.1:1

1.8:1 / 1.3:1

2.0:1 / 1.3:1

DC Current @ 15 Volts (max)

mA

29

31

33

Features

• HIGH REVERSE ISOLATION >35 dBm (TYP.)

• EXCEPTIONAL OUTPUT VSWR 1.1:1 (TYP.)

• LOW NOISE 3.6 dB (TYP.)

• MEDIUM OUTPUT LEVEL +8.0 dBm (TYP.)

Description

The A81-3 RF amplifier is a discrete hybrid design, which uses

thin film manufacturing processes for accurate performance

and high reliability.

The 2 stage silicon bipolar feedback amplifier design displays

impressive performance over a broadband frequency range.

An isolation transformer is used in the feedback loop, with the

benefit of high reverse isolation.

Both TO-8 and Surface Mount packages are hermetically

sealed, and MIL-STD-883 environmental screening is available

.

Product Image

Ordering Information

Part Number

Package

A81-3

TO-8

SMA81-3

Surface Mount

CA81-3

SMA Connectorized

Absolute Maximum Ratings

Parameter

Absolute

Maximum

Storage Temperature

-62ºC to +125ºC

Case Temperature

125ºC

DC Voltage

+17 V

Continuous Input Power

+10 dBm

Short Term Input power

(1 minute max.)

50 mW

Peak Power (3 sec max.)

0.5 W

“S” Series Burn-In

Temperature (case)

125ºC

Parameter

Rating

45ºC/W

0.157 W

Junction Temperature Rise

7ºC

* Over temperature performance limits for part number CA81-3, guaranteed from 0