AT-255_1 Datasheet, PDF (1/3 Pages) Tyco Electronics – 3 Volt Voltage Variable Attenuator 25 dB, DC-2.5 GHz

3 Volt Voltage Variable Attenuator
25 dB, DC-2.5 GHz
Features
• Single Voltage Control: 0 to -3 Volts
• 25 dB Attenuation Range at 0.9 GHz
• Low DC Power Consumption
• SOT-25 Plastic Package
• Tape and Reel Packaging Available
Description
M/A-COM’s AT-255 is a GaAs MMIC voltage
variable absorptive attenuator in a low cost SOT-25
surface mount plastic package. The AT-255 is
ideally suited for use where variable attenuation, fine
tuning, and very low power consumption are
required.
Typical applications include radio, cellular, GPS
equipment and automatic gain/level control circuits.
The AT-255 is fabricated using a mature 1-micron
GaAs MESFET process. The process features full
chip passivation for increased performance and
reliability.
Ordering Information
Part Number
AT-255
AT-255TR
Package
SOT-25 Plastic
1000 piece reel
Note: Reference Application Note M513 for reel size
information.
Functional Schematic ¹
Vc
GND
5
4
AT-255
V7
1
2
3
RF
GND
RF
1. V_C = -3 V to 0 V @ 25 µA maximum.
Pin Configuration
Pin No.
1
2
3
Function
RF Port
Ground
RF Port
Pin No.
4
5
Function
Ground
V_C
Absolute Maximum Ratings ²
Parameter
Input Power
Control Voltage V_C
Operating Temperature
Storage Temperature
Absolute Maximum
+21 dBm
-8 V to +0.5 V
-40°C to +85°C
-65°C to +150°C
2. Exceeding any one or combination of these limits may cause
permanent damage to this device.
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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Visit www.macom.com for additional data sheets and product information.