Monolithic Pin Diode Switches

MA4SW110, MA4SW210, MA4SW310

V5.00

Specification Subject to Change Without Notice

M/A-COM, Inc. _______________________________________________________________________________

5

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Operation of the MA4SW Series

Operation of the MA4SW series of PIN Switches is

achieved by simultaneous application of negative DC

current to the low loss switching arm J1, J2, or J3, and

positive DC current to the remaining switching arms as

shown in the Bias Connection circuits.

DC return is

achieved via J1. The control currents should be supplied

by constant current sources. The voltages at these points

will not exceed + 1.5 volts (1.2 volts typical) at currents up

to + 50 mA. In the Low Loss state, the series diode must

be forward biased and the shunt diode reverse biased. In

the isolated arm, the shunt diode is forward biased and the

series diode is reverse biased.

Driver Connections

MA4SW110

Control Level

(DC Current) at

Condition of

RF Output

J2

J1-J2

-20 mA

Low Loss

+20 mA

Isolation

MA4SW210

Control Level

(DC Current) at

Condition

of RF

Output

Condition of

RF Output

J2

J3

J1-J2

J1-J3

-20 mA

+20 mA

Low Loss

Isolation

+20 mA

-20 mA

Isolation

Low Loss

MA4SW310

Control Level (DC Current) at

Condition

of RF

Output

Conditio

n of RF

Output

Condition

of RF

Output

J2

J3

J4

J1-J2

J1-J3

J1-J4

-20 mA

+20 mA

+20 mA

Low Loss

Isolation

Isolation

+20 mA

-20 mA

+20 mA

Isolation

Low Loss

Isolation

+20 mA

+20 mA

-20 mA

Isolation

Isolation

Low Loss

Handling Considerations

Cleanliness: These chips should be handled in a clean

environment.

Electro-Static Sensitivity:

The MA4SW Series PIN

switches are ESD, Class 1 sensitive.

The proper ESD

handling procedures should be used.

20nH

20nH

20pF

20pF

20pF

20pF

100

Ω

J2 BIAS

RF OUTPUT

J2

J1 RF INPUT

Switch

Chip

J1 RF INPUT

J2 BIAS

J2

RF OUTPUT

J3 BIAS

J3

RF OUTPUT

Switch

Chip

20pF

20pF

20pF

20pF

20pF

20pF

20nH

20nH

20nH

100

Ω

J2 BIAS

J2

RF OUTPUT

J4

RF OUTPUT

J1 RF INPUT

J4 BIAS

J3 BIAS

J3

RF OUTPUT

20pF

20pF

20pF

20pF

20pF

20pF

20pF

20pF

20nH

20nH

20nH

20nH

100

Ω

Notes:

1. RLC values are for a typical operating frequency of 2 - 18 GHz

and Bias Current of ± 20mA per diode.