4

Silicon SP4T Surface Mount HMIC PIN Diode Switch

RoHS Compliant

Rev. V5

MASW-004103-1365

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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.

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.

Condition of

RF Output

Condition of

RF Output

Condition of

RF Output

Condition of

RF Output

B2

B3

B4

B5

J1-J2

J1-J3

J1-J4

J1-J5

6V at +20mA

6v at +20mA

6V at +20mA

Low Loss

Isolation

Isolation

Isolation

6V at +20mA

6V at +20mA

6V at +20mA

Isolation

Low Loss

Isolation

Isolation

Control Level

(DC Currents and Voltages)

6V at +20mA

6V at +20mA

6V at +20mA

Isolation

Isolation

Low Loss

Isolation

6V at +20mA

6V at +20mA

6V at +20mA

Isolation

Isolation

Isolation

Low Loss

Bias Control

Optimal operation of the MASW-004103-1365 is achieved by simultaneous application of negative DC voltage

and current to the low loss switching arm and positive DC voltage and current to the remaining switching arms

as shown in the applications circuit below. DC return is achieved via R2 on the RFC path. In the low loss state,

the series diode must be forward biased with current and the shunt diode reverse biased with voltage. In the iso-

lated arm, the shunt diode is forward biased with current and the series diode is reverse biased with voltage.

Driver Connections

Notes:

6.

Assume Vf ~ 1V at 20mA

7.

R1 = 5V / 0.02A = 250Ω; R2 = 9V / 0.02A = 450Ω

8.

9.

10. Inductors shown in the above schematic are RF bias chokes. The operating bandwidth of a broad-band PIN diode switch is often

dependent on the bias components, particularly the RF bias chokes. It is suggested that the response at the frequencies of interest

be measured with all the bias components in place prior to installing of MASW-004103-1365.

Example:

J1 to J2→ Low Loss

R2 = 450Ω

B2 = -15V

B3, B4, B5 = 6V

5.

The voltage applied to the off arm is allowed to vary provided a constant current is applied through the shunt diode on the off arm.