MASW-004103-13655P データシートの表示（PDF） - M/A-COM Technology Solutions, Inc.

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MASW-004103-13655P

Silicon SP4T Surface Mount HMIC PIN Diode Switch 50 MHZ - 20 GHz

M/A-COM Technology Solutions, Inc. 

MASW-004103-1365

Silicon SP4T Surface Mount HMIC PIN Diode Switch

50 MHZ - 20 GHz

Rev. V5

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

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

Driver Connections

Control Level (DC Currents and Voltages)

Condition of RF Output

B2

B3

B4

B5

J1-J2

-15 V at -20 mA5 +6 V at +20 mA +6 V at +20 mA +6 V at +20 mA Low Loss

+6 V at +20 mA -15 V at -20 mA5 +6 V at +20 mA +6 V at +20 mA Isolation

+6 V at +20 mA +6 V at +20 mA -15 V at -20 mA5 +6 V at +20 mA Isolation

+6 V at +20 mA +6 V at +20 mA +6 V at +20 mA -15 V at -20 mA5 Isolation

J1-J3

Isolation

Low Loss

Isolation

Isolation

J1-J4

Isolation

Isolation

Low Loss

Isolation

J1-J5

Isolation

Isolation

Isolation

Low Loss

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.

Example:

Application Circuit6,7,8,9,10

J1 to J2→ Low Loss

R1 = 250Ω

R2 = 450Ω

B2 = -15V

B3, B4, B5 = 6V

6. Assume Vf ~ 1 V at 20 mA

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

8. PR1 = 0.02 A x 0.02 A x 250 = 0.1 W

9. PR2 = 0.02 A x 0.02 A x 450 = 0.18 W

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

4

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

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