M A COM SW-485TR-3000, SW-485, SW-485SMB Datasheet

GaAs SPDT Switch

C=39pF

0.05 - 3.0 GHz

SW-485

Features

• Low Insertion Loss 0.3 dB Typ. @ 2.4 GHz

• Moderate Isolation 21 dB @ 2.4 GHz

• Low Power Consumption <5 µA @ +2.3V

• Low Cost Plastic SOT-363 Package

Description

M/A-COM’s SW-485 is a GaAs PHEMT MMIC SPDT
switch in a low cost SC-70 (SOT-363) surface mount plas­tic package. The SW-485 is ideally suited for applications
where very small size and low cost are required. Typical
applications are dual band systems where switching be­tween small signal components is required such as filter
banks, single-band LNAs, converters, etc. This part can be
used for low power, low loss requirements in the all sy s­tems operating up to 3 GHz, including PCS, GSM, DCS,
Blue Tooth, and other Rx chain applications.

The SW-485 is fabricated using a 0.5 micron gate length
GaAs PHEMT process. The process features full passiva­tion for performance and reliability.

Handling Procedures

Functional Schematic

V1 RFC V2

RF1 GND RF2

PIN 1

C=39pF C=39pF

Pin Configuration

Pin No. Function Description

The following precautions should be observed to avoid
dam age:

Static Sensitivity

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

Absolute Maximum Ratings 1

Parameter Absolute

Max Input Power (0.5 - 3.0 GHz)

3 V Control +32 dBm
5 V Control +34 dBm

Operating Voltage +8.5 volts

Operating Temperature

Storage Temperature -65 °C to +150 °C

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

Maximum

-40 °C to +85 °C

1 RF1 RF Port 1
2 GND Ground
3 RF2 RF Port 2
4 V2 Control 2

5 RFC RF Input
6 V1 Control 1

Truth Table 2

Mode

(Control)

Positive 1 0 ± 0.2V

2. External DC blocking capacitors are required on all RF
ports.

Control

V1

+2.3 to +5V

Control

V2

+2.3 to +5V

0 ± 0.2V

RFC-RF1

On
Off

RFC-RF2

Off
On

GaAs SPDT Switch 0.05—3.0 GHz

Electrical Specifications: TA = 25°C, Z0 = 50 Ω 3

Parameter Test Conditions Units Min Typ Max

Insertion Loss

Isolation 0.05-1.0 GHz

VSWR 0.05-3.0 GHz dB 1.1:1 1.2:1

IP2 Two Tone +5 dBm, 5 MHz Spacing, >50 MHz dBm 90
IP3 Two Tone +5 dBm, 5 MHz Spacing, >50 MHz dBm 46

0.05-1.0 GHz

0.05-3.0 GHz

0.05-3.0 GHz

SW-485

dB
dB

dB
dB

0.25

0.35

20
20

23
21

0.4

0.55

P1dB Vc = 0.2V/2.5V

Vc = 0.2V/3.0V

Trise, Tfall 10% to 90% RF and 90% to 10% RF nS 35

Ton, Toff nS 40

Transients mV 10

3. Insertion Loss can be optimized by varying the DC Blocking Capacitor value, i.e. 1000 pF for 100 MHz—1GHz, 39 pF for

0.5 GHz—3 GHz.

dBm
dBm

21

25

SC- 70 (SOT-363) Plastic Package 4

Dim Measurement (mm)

Min. Nom. Max.

A - - 1.10
A1 0 - 0.10
A2 0.70 0.90 1.00

b 0.15 - 0.30
c 0.08 - 0.25

D - 2.00 basic -

e - 0.65 basic -

E - 2.10 basic ­E1 - 1.25 basic -

L - 0.42 ref. -

PIN

E1

A

6

PIN

1

A2

D

e e

E

A1

A

L

c

Ordering Information

b

4. All dimensions are JEDEC MO-203-AB Issue A and are
shown as in/mm.

Specifications subject to change without notice.

n North America: Tel. [phone]
n Asia/Pacific: Tel.[phone], Fax [phone]
n Europe: Tel. [phone], Fax[phone]

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

Part Number Package

SW-485 SC-70 (SOT-363) Plastic Package

SW-485TR-3000 Forward Tape and Reel, 3000 pcs

SW-485SMB Sample Board

2