Voltage Variable Absorptive Attenuator
12 dB, DC-2.0 GHz
Features
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AT-259
V3
Functional Schematic
Attenuation: 12 dB at 1 GHz
Low Intermodulation Products
Low DC Power Consumption: 50 µW
Single Voltage Control 0 to -4 Volts
Nanosecond Switching Speed
Temperature Range: -40°C to +85°C
SOT-143 Plastic Package
Tape and Reel Packaging Available
4
3
1
2
Description
M/A-COM’s AT-259 is a GaAs MMIC voltage
variable absorptive attenuator in a low cost SOT-143
4-Lead surface mount plastic package. The AT-259
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-259 is fabricated with a monolithic GaAs
MMIC using a mature 1 micron process. The
process features full chip passivation for increased
performance and reliability.
Pin Configuration
Pin No.
Function
Pin No.
Function
1
GND
3
RF2
2
A
4
RF1
Ordering Information
Absolute Maximum Ratings 1
Part Number
Package
AT-259 PIN
SOT 4-Lead Plastic Package
Parameter
Absolute Maximum
AT-259TR
Forward Tape and Reel
Max Input Power
+21 dBm
AT-259RTR
Reverse Tape and Reel
Control Voltage
+5V, -8.5V
Operating Temperature
-40°C to +85°C
Storage Temperature
-65°C to +150°C
1. Operation of this device above any one of these parameters
may cause permanent damage.
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.
• 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.
