M A COM SW-259TR, SW-259, SW-259RTR Datasheet

GaAs SPST Switch
DC - 2.5 GHz

Features

●

Very Low Power Consumption: 50 µW

●

Low Insertion Loss: 1.0 dB

●

High Isolation: 35 dB up to 2 GHz

●

Very High Intercept Point: 46 dBm IP 3

●

Nanosecond Switching Speed

●

Temperature Range: -40˚C to + 85˚C

●

Tape and Reel Packaging Available 1

Description

M/A-COM’s SW-259 is a GaAs MMIC SPST terminated switch
in a low cost SOIC 8-lead surface mount plastic package.
The SW-259 is ideally suited for use where very low power
consumption is required. Typical applications include trans­mit/receive switching, switch matrices, and filter banks in
systems such as: radio and cellular equipment, PCM, GPS,
fiber optic modules, and other battery powered radio
equipment.

The SW-259 is fabricated with a monolithic GaAs MMIC
using a mature 1-micron process. The process features full
chip passivation for increased performance and reliability.

Electrical Specifications, T

Parameter Test Conditions

Insertion Loss DC – 0.1 GHz dB 0.5 0.6

Isolation DC – 0.1 GHz dB 62 65

VSWR On DC – 2.0 GHz 1.2:1

Off DC – 2.0 GHz 1.2:1

Trise, Tfall 10% to 90% RF, 90% to 10% RF nS 4
Ton, Toff 50% Control to 90% RF, 50% Control to 10% RF nS 8
Transients In Band mV 35

One dB Input Power 0.05 GHz dBm 18
Compression Point Input Power 0.5 – 2.0 GHz dBm 23

2nd Order Measured Relative 0.05 GHz dBm 55
Intercept to Input Power 0.5 – 2.0 GHz dBm 68

(for two-tone input power up to +5 dBm)

3rd Order Measured Relative 0.05 GHz dBm 40
Intercept to Input Power 0.5 – 2.0 GHz dBm 46

(for two-tone input power up to +5 dBm)

1. Refer to "Tape and Reel Packaging" Section, or contact factory.

2. All measurements with 0, -5 control voltages at 1 GHz in a 50Ω system, unless otherwise specified.

Specifications Subject to Change Without Notice.

= +25°C

A

2

DC – 0.5 GHz dB 0.8 1.0
DC – 1.0 GHz dB 1.0 1.2
DC – 2.0 GHz dB 1.4 1.6

DC – 0.5 GHz dB 55 58
DC – 1.0 GHz dB 45 48
DC – 2.0 GHz dB 32 35

SO-8

PIN 8

.1497-.1574

(3.80-4.00)

Orientation

mark

PIN 1

.004 (0.10)

.050(1.27) BSC.

.1890-.1968

(4.80-5.00)

- A -

8- Lead SOP outline dimensions

(All dimensions per JEDEC No. MS-012-AA, Issue C)

Unless Otherwise Noted: .xxx = ± 0.010 (.xx = ± 0.25)

- B -

.0532-.0688

(1.35-1.75)

0°-8°

- C -

.0040-.0098

(0.10-0.25)

.013-.020 TYP.

(0.33-0.51)

.010(0.25) M C A M B S

Narrow body .150

Dimensions in ( ) are in mm.

.xx = ± 0.02 (.x = ±0.5)

Ordering Information

Model No. Package

SW-259 PIN SOIC 8-Lead Plastic
SW-259TR Forward Tape & Reel
SW-259RTR Reverse Tape & Reel

Unit Min. Typ. Max

SW-259

.2284-.2440

(5.80-6.20)

.010(0.25) M B M

.0099-0.0196
x 45° Chamfer
(0.25-0.50)

.016-.050

(0.40-1.27)

.0075-0.0098

(0.19-0.25)

V3.00

M/A-COM, Inc.

North America: Tel. [phone] ■ Asia/Pacific: Tel. [phone] ■ Europe: Tel. [phone]

Fax [phone] Fax [phone] Fax [phone]

1

GaAs SPST Switch SW-259

V3.00

Absolute Maximum Ratings

Parameter Absolute Maximum

1

1,2

Max. Input Power

0.05 GHz +27 dBm

0.5 – 2 GHz +34 dBm
Control Voltage +5V, -8.5V
Storage Temperature -65°C to 150°C

1. Operation of this device above any one of these parameters may
cause permanent damage

2. When the RF Input power is applied to a terminated port, the
absolute maximum is +32 dBm.

Typical Performance

INSERTION LOSS vs FREQUENCY

2.0

1.5

1.0

LOSS (dB)

0.5

0

0 0.5 1.0 1.5 2.0 2.5

+25°C

FREQUENCY (GHz)

+85°C

+40°C

Functional Schematic

GND

RF1

8

7

1

2

A

GND

Pin Configuration

Pin No. Description

1 GND
2 A
3 B
4 GND
5 RF2
6 GND
7 GND
8 RF1

GND

6

3

B

RF2

5

4

GND

ISOLATION vs FREQUENCY

90
80
70
60
50
40
30

ISOLATION (dB)

20
10

0 0.5 1.0 1.5 2.0 2.5

FREQUENCY (GHz)

VSWR vs FREQUENCY

2.0

1.8

1.6

1.4

LOSS (dB)

1.2

1.0
0 0.5 1.0 1.5 2.0 2.5

FREQUENCY (GHz)

Truth Table

Control Inputs Condition of Switch
A B RF STATE
1 0 On
0 1 Off

"0" – 0 – -0.2V @ 20 µA max.
"1" – -5V @ 20µA Typ to -8V @ 600 µA max.

Electrical Schematic

RF1

Q1

Q2

Q3

A

B

RF2

Q4

2

Specifications Subject to Change Without Notice.

M/A-COM, Inc.

North America: Tel. [phone] ■ Asia/Pacific: Tel. [phone] ■ Europe: Tel. [phone]

Fax [phone] Fax [phone] Fax [phone]