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PE613050A-Z Datasheet(PDF) 4 Page - Peregrine Semiconductor |
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PE613050A-Z Datasheet(HTML) 4 Page - Peregrine Semiconductor |
4 / 8 page Page 4 of 8 ©2013–2014 Peregrine Semiconductor Corp. All rights reserved. DOC-32614-4 │ UltraCMOS® RFIC Solutions Product Specification PE613050 Figure 4. Equivalent Circuit Model Schematic Equivalent Circuit Model Description The Equivalent Circuit Model shown in Figure 4 can be used to accurately model the impedance, insertion loss, and isolation of the SP4T Tuning Switch. It provides a very close correlation to measured data and can easily be used in circuit simulation programs. Table 7 provides the mapping between the desired switch RF state (RF1 thru RF4) and the state variables (SW1 thru SW4). The equivalent circuit model parameter values can be calculated using equations shown in Table 6. Table 6. Equivalent Circuit Model Parameters Variable Equation (SW=0 for OFF and SW=1 for ON) Unit CP 0.25 pF COFF 0.14 pF RSW1 If SW1 == 1then 1.6 else 400e3 Ω LS 0.4 nH RSW2 If SW2 == 1then 1.6 else 400e3 Ω RSW3 If SW3 == 1then 1.6 else 400e3 Ω RSW4 If SW4 == 1then 1.6 else 400e3 Ω Table 7. Equivalent Circuit Model Variables RF State Variable Path V2 V1 SW1 SW2 SW3 SW4 RF1–ANT 0 0 1 0 0 0 RF2–ANT 1 0 0 1 0 0 RF3–ANT 0 1 0 0 1 0 RF4–ANT 1 1 0 0 0 1 |
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