AT65-0009 Datasheet, PDF (1/5 Pages) Tyco Electronics – Voltage Variable Attenuator 824 - 960 MHz

AT65-0009
Voltage Variable Attenuator
824 - 960 MHz
Rev. V3
Features
• 25 dB Attenuation Range
• High IP3
• Excellent Linearity Performance
• Low Cost/High Performance
• 50 Ohm Nominal Impedance
• SOT-25 Package
Description
M/A-COM’s AT65-0009 is an integrated voltage vari-
able attenuator containing two PIN diodes and a
passive glass quadrature hybrid. This device is
packaged in a 5 leaded SOT plastic surface mount
package. Maximum attenuation is typically achieved
at 3.5 V bias using the suggested bias circuit. The
AT65-0009 is ideally suited for GSM communication
applications requiring variable attenuation in the 824
to 960 MHz bandwidth.
Functional Diagram and Bias Circuitry
GND
GND
PIN 1
GND
C5
C1
RF IN
L1
C3
R1
VB
PIN 3
C6
L2
C2
C4
RF OUT
Pin Configuration
Ordering Information
Pin No.
1
2
3
4
5
Function
RFIN, V_B
GND
RFOUT, V_B
GND
GND
Part Number
Package
External Circuitry Parts ¹
AT65-0009
AT65-0009TR
AT65-0009-TB
Bulk Packaging
1000 piece reel
Sample Test Board
Note: Reference Application Note M513 for reel size
information.
Part
C1
C2
C3
C4
L1
L2
R1
C5²
C6²
Value
390 pF
390 pF
390 pF
390 pF
180 nH
180 nH
10 KOhm
1.5 pF
1.5 pF
Purpose
DC Block
DC Block
By-pass
By-pass
RF Choke
RF Choke
Current Limiting
RF Tune
RF Tune
1. All external circuitry parts are readily available, low cost
surface mount components (.060 in. x .030 in. or .080 in.
x .050 in.).
2. See Application Note MA-C-05010008A for external tuning
capacitor values to suit specific Communication Bandwidths.
Insertion Loss will vary depending on tuning capacitor value
chosen.
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
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.