ALPHA AS139-73 Datasheet

Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [e-mail] • www.alphaind.com 1

Specifications subject to change without notice. 3/99A

Parameter

1

Condition Frequency Min. Typ. Max. Unit

Switching Characteristics

5

Rise, Fall (10/90% or 90/10% RF) 60 ns
On, Off (50% CTL to 90/10% RF) 100 ns

Video Feedthru 50 mV
Input Power for 1 dB Compression 0.9 GHz +38 dBm
Intermodulation Intercept Point (IP3) For Two-tone Input Power +10 dBm 0.9 GHz +55 dBm
Control Voltages V

Low

= 0 to 0.2 V @ 20 µA Max.

V

High

= +3 V @100 µA Max.to +5 V @ 200 µA Max.

VS= V

High

± 0.2 V

GaAs IC High Linearity Positive Control
SPDT Switch DC–2 GHz

Features

■ High Linearity (55 dBm IP3 @ 0.9 GHz)

■ Low Insertion Loss (0.35 dB @ 0.9 GHz)

■ Low DC Power Consumption

■ +3 V to +5 V Operation

■ Ultra Miniature SOT-6 Package

SOT-6

AS139-73

0.074

(1.90 mm REF.)

0.071 (1.80 mm)

0.052 (1.30 mm)

0.037 (0.95 mm) REF.

0.122 (3.10 mm)

0.106 (2.70 mm)

0.006

(0.15 mm)

0.000

(0.00 mm)

0.057 (1.45 mm)

0.035 (0.90 mm)

0.020 (0.51 mm)

0.014 (0.350 mm)

0.126 (3.20 mm)

0.087 (2.20 mm)

PIN 6

PIN 1

PIN 1

INDICATOR

0.022 (0.61 mm)

0.004 (0.10 mm)

0.014

(0.26 mm)

0.004

(0.10 mm)

0.012

(0.30 mm)

TYP.

5.0˚ ± 1˚

5.0˚ ± 1˚

Description

The AS139-73 is a GaAs FET IC high linearity SPDT
switch in a SOT-6 plastic package.This switch has been
designed for use where extremely high linearity, low
insertion loss and ultraminiature package size are
required. It can be controlled with positive, negative or a
combination of both voltages. Some standard
implementations include antenna changeover, T/R and
diversity switching o ver 2 W.The AS139-73 switch can be
used in many analog and digital wireless communication
systems including cellular, GSM and DECT applications.

Parameter

1

Frequency

2

Min. Typ. Max. Unit

Insertion Loss

3

DC–0.5 GHz 0.3 0.4 dB
DC–1.0 GHz 0.4 0.6 dB
DC–2.0 GHz 1.0 1.2 dB

Isolation DC–0.5 GHz 20 23 dB

DC–1.0 GHz 15 17 dB
DC–2.0 GHz 8 10 dB

VSWR

4

DC–1.0 GHz 1.3:1 1.4:1 dB
DC–2.0 GHz 1.3:1 1.8:1 dB

Electrical Specifications at 25°C (0, +5 V)

Operating Characteristics at 25°C (0, +5 V)

1.All measurements made in a 50 Ω system, unless otherwise specified.

2. DC = 300 kHz.

3. Insertion loss changes by 0.003 dB/°C.

4. Insertion loss state.

5.Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth.

GaAs IC High Linearity Positive Control SPDT Switch DC–2 GHz AS139-73

2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [e-mail] • www.alphaind.com

Specifications subject to change without notice. 3/99A

0.7

0.6

0.5

0.4

0.3

0.2

1.0 2.0

Frequency (GHz)

Insertion Loss vs. Frequency

DC

dB

2.0

1.8

1.6

1.4

1.2

1.0

1.0 2.0

Frequency (GHz)

VSWR vs. Frequency

DC

60

10

Frequency (GHz)

Isolation vs. Frequency

dB

DC

20

1.0 2.0

30

40

50

Typical Performance Data (0, +5 V)

C

BL

C

BL

V

1

J

1

V

2

J

2

GND

J

3

C

BL

V

S

1 2 3

6 5 4

10 kΩ

Characteristic Value

RF Input Power 6 W Max. > 900 MHz,

0/-5 V Control
Control Voltage -0.2 V, +8 V
Operating Temperature -40°C to +85°C
Storage Temperature -65°C to +150°C

Θ

JC

25°C/W

Absolute Maximum Ratings

Pin Out

V

1

V

2

J1–J

2

J1–J

3

0 V

High

Isolation Insertion Loss

V

High

0 Insertion Loss Isolation

Truth Table

V

High

= +3 to +5 V (VS= V

High

± 0.2 V).

DC blocking capacitors (C

BL

) must be supplied externally.

C

BL

= 100 pF for operating frequency >500 MHz.