AT-109 Datasheet, PDF (1/3 Pages) Tyco Electronics – Voltage Variable Absorptive Attenuator, 35 dB 0.5 - 2 GHz

AT-109
Voltage Variable Absorptive Attenuator
35 dB, 0.5 - 2.0 GHz
Features
• Single Positive Voltage Control: 0 to +5 Volts
• 35 dB Attenuation Range at 0.9 GHz
• ± 2 dB Linearity from BSL
• Low DC Power Consumption
• Temperature Range: -40°C to +85°C
• SOIC-8 Plastic Package
• Tape and Reel Packaging Available
Description
M/A-COM’s AT-109 is a GaAs MMIC voltage
variable absorptive attenuator in a low-cost SOIC-8
lead surface mount plastic package. The AT-109 is
more linear than the higher attenuation range AT-
108.
The AT-109 is ideally suited for use where linear
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-109 is fabricated with a monolithic GaAs
MMIC using a mature 1-micron process. The
process features full chip passivation for increased
performance and reliability.
Ordering Information ¹
Part Number
Package
AT-109
SOIC 8-Lead Plastic Package
AT-109TR
Forward Tape and Reel
AT-109SMB
Sample Test Board
1. Reference Application Note M513 for reel size information.
Functional Schematic ^2,3,4
Rev. V5
8
7
6
5
1
2
3
4
2. V_CC = +5 VDC ± 0.5 VDC @ 50 µA maximum.
3. V_C = 0 VDC to +5 VDC @ 50 µA maximum.
4. External DC blocking capacitors are required on all RF ports.
Pin Configuration
Pin No.
1
2
3
4
Function
Ground
Ground
RF Port
V_CC
Pin No.
5
6
7
8
Function
V_C
Ground
RF Port
Ground
Absolute Maximum Ratings ^5,6
Parameter
Absolute Maximum
Input Power
+21 dBm
Supply Voltage V_CC
Control Voltage V_C
Operating Temperature
-1 V < V_CC < +8 V
-1 V < V_C < V_CC + 0.5 V
-40°C to +85°C
Storage Temperature
-65°C to +150°C
5. Exceeding any one or combination of these limits may cause
permanent damage to this device.
6. M/A-COM does not recommend sustained operation near
these survivability limits.
1
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is considering for development. Performance is based on target specifications, simulated results,
and/or prototype measurements. Commitment to develop is not guaranteed.
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Solutions has under development. Performance is based on engineering tests. Specifications are
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typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available. _{M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make}
Commitment to produce in volume is not guaranteed.
changes to the product(s) or information contained herein without notice.