madr-008851-000100 M/A-COM Technology Solutions, Inc., madr-008851-000100 Datasheet - Page 5

• Manufacturer Part Number: madr-008851-000100
• Description: Diode Driver Series Shunt High Power Switches
• Manufacturer: M/A-COM Technology Solutions, Inc.

5
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions
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
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.
Commitment to produce in volume is not guaranteed.
PIN Diode Driver for Series / Shunt High Power Switches
Driver and SPDT Schematic for 2 GHz Applciations
MADR-008851-000100
8.
9.
10. R2 is calculated by (VDD - Vf) / I
11. C8 is already built-in for M/A-COM MASW-000834-13560T switch.
12. The current through the back-biased diodes will be the leakage current for the diodes
13. C1-C7, L1-L4, R1, R2, and the switch are discrete components that should be installed on the user’s board. It is recommended that
14. The switching speed will be affected by the value of VCC, VDD, C6, C7, the size of the PIN diodes, and the forward bias currents. Use
Logic
Input
Forward Bias Diode Voltage: Vf is ~0.9V @ 22 mA; Vf is ~1.0V @ 35 mA
R1 is calculated by (VCC - Vf) / I
rent, R1 = 178 Ω @ VCC = 5.0V and 93 Ω @ VCC = 3.3V. For 50 mA load current, R1 = 57.6 Ω @ VCC = 5.0V and 24 Ω @ VCC=
3.3V.
by I
Coilcraft 0603CS-27NXJLW or equivalent be used for L1-L4 at 2 GHz. For other frequency band, C1-C3 and L1-L4 should be adjusted.
higher VCC and VDD, and lower forward bias currents for faster switching.
shunt
x (VDD - Vf). For 28V VDD and 20 mA of I
C1
MADR-008851-000100
VDD
Switch Driver
Ground
VCC
TX
series
shunt
SH2
SH1
TX
RX
, where I
- 22 Ω, where I
27 pF
100V
C1
shunt
TX Voltage
is the desired forward bias current for the shunt diode. The power rating is calculated
shunt
See Note 10
series
27 nH
, R2 should use a 1W, 1.3k ohm resistor.
R2
L2
is the desired forward bias current for the series diodes. For 20 mA load cur-
33 pF
C6
27 pF
100V
C3
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
changes to the product(s) or information contained herein without notice.
• North America Tel: [phone] • Europe Tel: [phone]
• India Tel: [phone]
SPDT
Visit www.macomtech.com for additional data sheets and product information.
ANT
33 pF
C7
8,9,10,11,12,13,14
27 nH
L3
27 nH
L1
1000 pF
C4
RX Voltage
See Note 9
27 nH
SH Current
L4
• China Tel: [phone]
R1
27 pF
100V
Note 11
20 pF
C2
C8
0.022 uF
C5
RX
Rev. V1P
VCC