M A COM SW-425TR, SW-425RTR, SW-425 Datasheet

3 Watt Cellular T/R and Antenna Changeover Switch, DC - 3.0 GHz SW-425

P

SW-425

3 Watt Cellular T/R and Antenna
Changeover Switch, DC - 3.0 GHz

Features

Low Cost Plastic SOT-26 Package

•

Low Insertion Loss <0.6dB @ 1900 MHz

•

Low Power Consumption <20µA @ +3V

•

Very High Intercept Point: 53 dBm IP

•

Both Positive and Negative 2.5 to 8 V Control

•

For CDMA, W-CDMA, TDMA, GSM, PCS and DCS

•

3

Applications

Description

M/A-COM’s SW-425 is a GaAs monolithic switch in a low cost
SOT-26 surface mount plastic package. The SW-425 is ideally
suited for applications where very low power consumption
(<10µA@5V), low intermodulation products and very small size
are required. Typical applications include Internal/External antenna
select switch for portable telephones and data radios. In addition,
because of its low loss, good isolation and inherent speed, the
SW-425 can be used as a conventional T/R switch or as an antenna
diversity switch. The SW-425 can be used in power applications up
to 3 watts in systems such as celluar PCS, CDMA, W-CDMA,
TDMA, GSM and other analog/digital wireless communications
systems.

The SW-425 is fabricated using a new 0.5 micron gate length GaAs
PHEMT process. The process features full chip passivation for
increased performance and relia bility.

Electrical Specifications TA = 25°C

SOT-26 Plastic Package

XX#Y

IN 1

Ordering Information

Part Number Package

SW-425 PIN SOT-26 Plastic Package
SW-425TR Forward Tape and Reel
SW-425RTR Reverse Tape and Reel

1. Reference Application Note M513 for reel size information.

1

1

Insertion Loss DC - 1 GHz dB 0.4 0.5
Insertion Loss 1- 2 GHz dB 0.55 0.65
Insertion Loss 2 - 3 GHz dB 0.7 0.8
Isolation DC - 1 GHz dB 18 20
Isolation 1 - 2 GHz dB 13 15
Isolation 2 - 3 GHz dB 10 12
VSWR DC - 3 GHz 1.2:1 1.4:1
P

1dB

P

1dB

Input IP

Input IP

Harmonics 2

Harmonics 2

T

rise

T

on

ransients

T

Gate Leakage Current

M/A-COM Division of AMP Incorporated 3 North America: Tel. [phone], Fax [phone] Asia/Pacific: Tel.[phone], Fax [phone]

3

Europe: Tel. [phone], Fax[phone]

www.macom.com

Parameter Test Conditions Units Min. Typ. Max.

(3V supply) 500 MHz - 3 GHz dBm 32 34
(5V supply) 500 MHz - 3 GHz dBm 34 36

2

3

nd
rd

3

nd
rd

3

,

T

fall

,

T

off

AMP and Connecting at a Higher Level are trademarks.

Specifications subject to change without notice.

2-Tone, 5 MHz spacing, 0.9 GHz
+10 dBm (+13 dBm total) V

2-Tone, 5 MHz spacing, 0.9 GHz
+10 dBm (+13 dBm total) V

Pin 30 dBm |V

Pin 33 dBm |V

10% to 90% RF, 90% to 10% RF
50% Control to 90% RF, Control to 10% RF
In-Band

= 3 V µA 10 20

V

CTL

| = 3V dBc 65

CTL

| = 5V dBc 65

CTL

CTL

CTL

=3V

=3V

dBm 62 70

dBm 48 53

45

65

nS
nS
mV

70
48

75
75

60
20
20

V2.00

3 Watt Cellular T/R and Antenna Changeover Switch, DC - 3.0 GHz SW-425

V

1

Parameter Absolute Maximum

Max. Input Power (0.5 - 3.0 GHz)

3 V Control
5 V Control

Operating Temperature
Storage Temperature

1. Exceeding any one or combination of these limits may cause
permanent damage.

+36 dBm
+38 dBm

-40°C to +85°C

-65°C to +150°C

Truth Table

Mode

(Control)

Positive

Postitive/
Negative
Negative

1. External DC blocking capacitors are re quired on all RF ports.
39pF capacitors used for positive control voltage.

2. |-V

CTL

3. If negative control is used, DC blocking capacitors are not required
on RF Ports.

1

|, V

1,2

3

CTL

Control

A

0±0.2V

+2.5 to +8V

-Vc±0.2V
+Vc

0±0.2V

-2.5V to -8V

≤ 8 V

ControlBRFC - RF1 RFC - RF2

+2.5 to +8V

0±0.2V

+Vc

-Vc±0.2V

-2.5V to -8V
0±0.2V

Off
On
Off
On
On
Off

On
Off
On
Off
Off
On

Functional DiagramAbsolute Maximum Ratings

A RFC VB

PIN 1

RF1 GND RF2

PIN Configuration

PIN No. Function Description

1 RF1 RF in/out
2 GND RF Ground
3 RF2 RF in/out
4 VB V Control B
5 RFC RF COMMON
6 VA V Control A

Handling Procedures

The following precautions should be observed to avoid damage:

Static Sensitivity

Gallium arsenide Integrated Circu its are ESD sensitive and can
be damaged by static electricity. Proper ESD techniques should
be used when handling these devices.

M/A-COM Division of AMP Incorporated 3 North America: Tel. [phone], Fax [phone] Asia/Pacific: Tel.[phone], Fax [phone]

3

Europe: Tel. [phone], Fax[phone]

V2.00

www.macom.com

AMP and Connecting at a Higher Level are trademarks.

Specifications subject to change without notice.