AM55-0004 Просмотр технического описания (PDF) - M/A-COM Technology Solutions, Inc.
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AM55-0004 Datasheet PDF : 8 Pages
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AM55-0004
250 mW Linear Power Amplifier and T/R Switch
1.8—2.0 GHz
AM55-0004SMB Biasing Procedure
Rev. V2
In order to prevent transients which may damage the MMIC, please adhere to the following procedure.
• Turn on all power supplies and set all voltages to 0 volts BEFORE connecting the power supplies to the
DC connector.
• Apply -4.0 volt supply or GND to DC connector pin 9 (VSW, see truth table for desired mode).
• Apply -4.0 volt supply or GND to DC connector pin 13 (VSW, see truth table for desired mode).
• Apply a -4.0 volt supply to the DC connector pin 16 (VG1).
• Apply a -4.0 volt supply to the DC connector pin 18 (VG2).
• Apply a +4.8 volt supply to the DC connector pin 2 (VDD1).
• Apply a +4.8 volt supply to the DC connector pin 20 (VDD2).
• Apply GND to DC connector pin 5 (Save Tx).
• Adjust VG1 supply for desired VDD1 quiescent current (typically 30 mA).
• Adjust VG2 supply for desired VDD2 quiescent current (typically 65 mA).
• Change voltage on DC connector pin 5 as required (Save Tx, see truth table for desired mode).
• Apply RF power and test.
• To power off, reverse above procedure
1. Set VG1 & VG2 to -4 V.
2. Set VDD1 & VDD2 to 0 V.
3. Set control voltage supplies to 0 V.
4. Disconnect bias lines from DC connector.
5. Turn off power supplies.
Evaluation PCB and RF Connector Losses
Port Reference
PA IN
PA OUT
Tx IN
ANT IN/OUT
Rx OUT
Estimated Loss (dB)
0.15
0.20
0.20
0.20
0.20
The DC connector on the Designer’s Kit PCB allows selection of all the device’s operating modes.
It is accomplished by one or more of the following methods:
1. A mating female multi-pin connector (Newark Electronics
Stock # 46F-4658, not included)
2. Wires soldered to the necessary pins (not included)
3. Clip leads (not included)
4. A combination of clip leads or wires and jumpers
(jumpers included as required)
8
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions • North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400
is considering for development. Performance is based on target specifications, simulated results,
and/or prototype measurements. Commitment to develop is not guaranteed.
PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology
• India Tel: +91.80.4155721
• China Tel: +86.21.2407.1588
Visit www.macomtech.com for additional data sheets and product information.
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.
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