Voltage Variable Absorptive Attenuator
35 dB, DC - 2.0 GHz
Features
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35 dB Voltage Variable Attenuation at 1 GHz
Single Voltage Control: 0 to -4 Volts
Low DC Power Consumption
Nanosecond Switching Speed
Temperature Range: -40°C to +85°C
SOIC-14 Plastic Package
Tape and Reel Packaging Available
AT-635
V6
Functional Schematic
14
13
12
11
10
9
8
Description
M/A-COM’s AT-635 is a GaAs MMIC voltage
variable absorptive attenuator in a low cost SOIC
14-lead surface mount plastic package. The AT-635
is ideally suited for use where attenuation fine
tuning, fast switching and very low power
consumption are required.
Typical applications include radio, cellular, GPS
equipment and other automatic gain/level control
circuits.
The AT-635 is fabricated with a monolithic GaAs
MMIC using a mature 1-micron process. The
process features full chip passivation for increased
performance and reliability.
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2
3
4
5
6
7
Pin Configuration
Pin No.
1
2
3
4
5
6
Function
V
C
Ground
Ground
Ground
Ground
Ground
Ground
Pin No.
8
9
10
11
12
13
14
Function
RF2
Ground
Ground
Ground
Ground
Ground
RF1
Ordering Information
Part Number
AT-635
AT-635TR
7
Package
SOIC 14-Lead Plastic Package
Tape and Reel
Absolute Maximum Ratings
1,2
Parameter
Input Power
Control Voltage
Operating Temperature
Storing Temperature
Note: Reference Application Note M513 for reel size
information.
Absolute Maximum
+21 dBm
-8.5 V < V
C
< +5 V
-40°C to +85°C
-65°C to +150°C
1. Exceeding any one or combination of these limits may cause
permanent damage to this device.
2. M/A-COM does not recommend sustained operation near
these survivability limits.
1
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.
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North America
Tel: 800.366.2266 / Fax: 978.366.2266
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Europe
Tel: 44.1908.574.200 / Fax: 44.1908.574.300
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Asia/Pacific
Tel: 81.44.844.8296 / Fax: 81.44.844.8298
Visit www.macom.com for additional data sheets and product information.
MA-COM [ M/A-COM TECHNOLOGY SOLUTIONS, INC. ]
