MADR-008888-000100_V5 Datasheet, PDF (4/5 Pages) M/A-COM Technology Solutions, Inc. – PIN Diode Driver for Series / Series High Power Switch

MADR-008888-000100
PIN Diode Driver for Series / Series High Power Switch
Rev. 5
Driver and SPDT Schematic with +5V & +28V DC Power ^{7,8,9,10,11,12,13,14}
ANT
C3
100 pF
L1
27 nH
C4
100 pF
R1
See Note 8
+5V
C5
100 pF
TX
C1
100 pF
100V
L2
27 nH
SPDT
L3
27 nH
RX
C2
100 pF
100V
+28V +5V
MADR-008888-000100
Switch Driver
Cbypass
12 pF
Cbypass
12 pF
Logic
Input
Ground
7. Forward Bias Diode Voltage: Vf is 0.9V @ 22 mA; Vf is 1.0V @ 35 mA
8. For 22 mA load current, R1 = 180 Ω @ VCC = 5.0V and 105 Ω @ VCC = 3.3V. For 35 mA load cur-
rent, R1 = 110 Ω @ VCC = 5.0V and 165 Ω @ VCC= 3.3V. Nominal power dissipation in the 180 Ω
and 110 Ω resistors are 87 mW and 135 mW.
9. Reverse Bias is ~ 27V (This is the 28V supply minus approximately 1V on the diode).
10. M/A-COM PIN Diode Driver, MADR-008888-0001TR is recommended for usage with the MASW-
000823-12770T SPDT Switch.
11. The voltage at the common anode will be approximately 1.0V.
12. The current in through the back-biased diodes will be the leakage current for the diodes
13. C1-C5, L1-L3, R1, and the switch are discrete components that should be installed on the user’s
board. It is recommended that Coilcraft 0603CS-27NXJLW or equivalent be used for L1-L3 at 2 GHz
(values may vary based on the frequency).
14. There are 33 pF bypass capacitors included in the driver for the RX and TX ports. There are cases,
especially at higher frequencies, where the optional 12 pF bypass capacitors that are shown on the
schematic are needed.
4
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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.