Drivers for GaAs FET Switches and Digital Attenuators

Rev. V5

Application Note

S2079

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4

Visit www.macomtech.com for additional data sheets and product information.

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.

Additional Notes:

Application Note M537, GaAs MMIC Based Control

Components with Integral Drivers defines performance

parameters for switches and attenuators.

1.

See Application Note M517, MASW6010 GaAs

SPDT Switch Performance and Driver Circuit

Techniques for additional information on designing

with the SWD-109 and SWD-119 drivers.

2.

For pin assignments and supply voltages for the

SWD-109 and SWD-119 single/quad drivers, see

the SWD-109/119 data sheet, available on the M/A-

COM web site at www.macom.com.

3.

See Application Note M521, Positive Voltage Control

of GaAs MMIC Control Devices for more information

on floating attenuators above ground potential.

4.

See Application Note M539, Drivers for GaAs MMIC

Switches and Digital Attenuators for more

information on compression and intermodulation

distortion and the operation of the SW-109 and

SWD-119 drivers.

5.

See manufacturers' data sheets and application

notes for additional information on digital logic IC's.

6.

Please contact your M/A-COM sales

representative for information on the latest

switches and attenuators.

Appendix

Popular M/A-COM GaAs FET switches

In the following tables, switching speed is the time from

the 50 percent point of the control voltage rise or fall to

the occurrence of 90 percent (on) or 10 percent (off) of

the switched RF level.

Part No.

Type

Package

Switching

Speed

SW-212

SPST

FP-13

6 ns

SW-214

SPST terminated

FP-13

6 ns

SW-226

SPDT terminated

CR-2

6 ns

SW-227

SPDT

CR-2

6 ns

SW-239

SPDT

SOIC-8

4 ns

SW-259

SPST terminated

SOIC-8

8 ns

SW-276

SPDT

CR-2

35 ns

SW-279

SPDT

SOIC-8

35 ns

SW-289

SP4T

SOIC-14

6 ns

SW-337, 338

SPDT terminated

SOIC-8

10 ns

SW-391

1

SPDT

SOT-26

42 ns

SW-392

1

SPDT

SOT-26

20 ns

SW-395

1

SPDT

SOT-26

8 ns

SW-419

SP4T

SOIC-24

16 ns

SW-425

1

SPDT

SOT-26

~ 20 ns

SW-437

SPDT

SOT-363

~ 8 ns

SW-439*

SPDT

MSOP-10

~ 34 ns

Dual Control Negative Bias

1. Contains no shunt FET’s, hence can operate with positive

control voltages without ground pull-up components if

provided with DC blocking capacitors on all RF lines.

Dual Positive Control, Requires Positive Supply

(Includes pull-up components on-chip)

Part Number

Type

Package

Switching

Speed

SW-277

SPDT

SOIC-8

35 ns

SW-349

SPST terminated

SOIC-8

2

μs

SW-394

SPDT

SOIC-8

36

μs

SW-399

SPST

SOT-26

110

μs

Part Number

Type

Package

Switching

Speed

SW05-0311

SPST, TTL/CMOS in

CR-9

150 ns

SW10-0312

SPDT, TTL/CMOS in

CR-9

150 ns

SW10-0313

SPDT, TTL/CMOS in

CR-9

150 ns

SW65-0014

SPST, TTL/CMOS in

SOIC-24

50 ns

SW65-0114

SPST, TTL/CMOS in

SOIC-24

50 ns

SW65-0214

SP3T, TTL/CMOS in

SOIC-24

50 ns

SW65-0313

SP2T, TTL/CMOS in

SOIC-16

50ns

SW65-0314

SP4T, TTL/CMOS in

SOIC-24

50 ns

SW65-0440

SP4T, absorptive,

TTL/CMOS in

QSOP-24

50 ns

SW-110

SPDT, TTL/CMOS in

CR-9

35 ns

SW-311

SPST, TTL.CMOS in

CR-9

12 ns

SW-312

SPDT, TTL/CMOS in

CR-9

7 ns

SW-313

SPD, TTL/CMOS in

CR-9

18 ns

SW-335

SPDT, TTL /CMOS in

SOIC-8

200 ns

SW-224

SPDT, TTL in

TO-5-4

150 ns

SW- 225

SPDT, TTL in

FP-13

150 ns

Single Control, Integral Driver, Positive Supply

Part Number

Type

Package

Switching

Speed

SW-205

SPDT, TTL in

DI-1

20 ns

SW-206

SPDT, CMOS in

DI-1

40 ns

SW-215

SPST, TTL in

DI-1

20 ns

SW-216

SPDT, CMOS in

DI-1

40 ns

SW-217

SPDT, TTL in

DI-1

20 ns

SW-233

SPDT, TTL in

FP-16

20 ns

SW-236

SPDT, CMOS in

FP-16

40 ns

Single Control, Integral Driver, Requires

Positive And Negative Supplies