A81-1 / SMA81-1
Cascadable Amplifier
20 to 250 MHz
Features
High Reverse Isolation : >30 dBm (TYP.)
Low Noise: 2.4 dB (TYP.)
High Gain: 25 dB (TYP.)
High Level Output: +13.5 dBm (TYP.)
Rev. V3
Product Image
Description
The A81-1 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.
Ordering Information
Part Number
A81-1
SMA81-1
CA81-1**
Package
TO-8
Surface Mount
SMA Connectorized
** The connectorized version is not RoHs compliant.
Electrical Specifications: Z
0
= 50, V
CC
= 15 V
DC
Parameter
Frequency
Small Signal Gain (min)
Gain Flatness (max)
Reverse Isolation
Noise Figure (max)
Power Output
@ 1 dB comp. (min)
IP3
IP2
Second Order Harmonic IP
VSWR Input / Output (max)
DC Current (max)
1
mA
Absolute Maximum Ratings
Parameter
Storage Temperature
Case Temperature
DC Voltage
Continuous Input Power
Short Term Input power
(1 minute max.)
Peak Power (3 µsec max.)
Units
MHz
dB
dB
dB
dB
dBm
dBm
dBm
dBm
Typical
25ºC
10-300
25.0
±0.1
31
2.5
13.5
+27
+33
+41
1.5:1 / 1.5:1
25
3.3
Guaranteed
0º to 50ºC
20-250
24.0
±0.5
Absolute
Maximum
-62ºC to +125ºC
125ºC
+17 V
+10 dBm
50 mW
0.5 W
125ºC
-54º to +85ºC
20-250
23.5
±0.7
3.8
12.0
“S” Series Burn-In
Temperature (case)
12.5
Thermal Data: V
CC
= 15 V
DC
Parameter
Thermal Resistance θ
jc
1.9:1 / 1.9:1
27
2.0:1 / 2.0:1
29
Transistor Power Dissipation P
d
Junction Temperature Rise
Above Case T
jc
Rating
171ºC/W
0.098 W
17ºC
Over temperature performance limits for part number CA81-1, guaranteed from 0
o
C to +50
o
C only.
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit
www.macom.com
for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
A81-1 / SMA81-1
Cascadable Amplifier
20 to 250 MHz
Typical Performance Curves
Outline Drawing: TO-8
*
Rev. V3
Outline Drawing: Surface Mount
Outline Drawing: SMA Connectorized
2
Dimensions are inches (millimeters) ±0.015 (0.38) unless otherwise specified.
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit
www.macom.com
for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
A81-1 / SMA81-1
Cascadable Amplifier
20 to 250 MHz
Rev. V3
M/A-COM Technology Solutions Inc. All rights reserved.
Information in this document is provided in connection with M/A-COM Technology Solutions Inc ("MACOM")
products. These materials are provided by MACOM as a service to its customers and may be used for
informational purposes only. Except as provided in MACOM's Terms and Conditions of Sale for such products or
in any separate agreement related to this document, MACOM assumes no liability whatsoever. MACOM
assumes no responsibility for errors or omissions in these materials. MACOM may make changes to
specifications and product descriptions at any time, without notice. MACOM makes no commitment to update
the information and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future
changes to its specifications and product descriptions. No license, express or implied, by estoppels or otherwise,
to any intellectual property rights is granted by this document.
THESE MATERIALS ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR
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WHICH MAY RESULT FROM THE USE OF THESE MATERIALS.
MACOM products are not intended for use in medical, lifesaving or life sustaining applications. MACOM
customers using or selling MACOM products for use in such applications do so at their own risk and agree to
fully indemnify MACOM for any damages resulting from such improper use or sale.
3
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit
www.macom.com
for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
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