P35-4215-000-200 - Bookham Technology, Inc.

Data

sheet

www.bookham.com Thinking RF solutions

MMIC SPDT

Reflective/Non-Reflective

Switch, DC - 4GHz

The P35-4215-000-200 is a high performance Gallium

Arsenide single pole double throw broadband RF switch

MMIC. It is suitable for use in broadband communications and

instrumentation applications. The isolated port of the switch

can be terminated with either an on-chip 50 Ωload or a short-

circuit. Control is effected by the application of complimentary

0V and -5V levels to the control lines in accordance with the

truth table below.

This die is fabricated using Bookham Technology's 0.5 µm

gate length MESFET process (S20) and is fully protected using

Silicon Nitride passivation for excellent performance and

reliability.

Features

•Broadband performance

•Low insertion loss; 0.5dB typ

at 2GHz

•Ultra low DC power consumption

•Fast switching speed; 3ns typical

Chip form

www.bookham.com

www.bookham.com Thinking RF solutionswww.bookham.com

Electrical Performance

Ambient temperature = 22 ±3 °C , Zo = 50 ohms, Control voltages = 0V/-5V unless otherwise stated

P35-4215-000-200

Parameter Conditions Reflective Terminated Units

Min Typ Max Min Typ Max

Insertion Loss DC - 2GHz - 0.5 0.6 - 0.6 0.7 dB

2 - 4GHz - 0.9 1.0 - 1.4 1.5 dB

Isolation DC - 2GHz 32 34 - 21 23 - dB

2 - 4GHz 26 28 - 16 17 - dB

Input Return Loss 1 DC - 2GHz 15 25 - 15 25 - dB

2 - 4GHz 10 20 - 10 20 - dB

Output Return Loss 1DC - 2GHz 15 25 - 15 25 - dB

2 - 4GHz 10 20 - 10 20 - dB

1dB power 0/-5V Control; 50MHz - 21 - - 20 - dBm

compression point 20/-5V Control; 0.25 - 4GHz - 23 - - 24 - dBm

0/-8V Control; 50MHz - 25 - - 25 - dBm

0/-8V Control; 0.25 - 4GHz - 31 - - 32 - dBm

Switching Speed 50% Control to 10%90%RF - 3 - - 3 - ns

Third Order Intercept 3500MHz - 46 - - 46 - dBm

Notes

1. Return Loss measured in low loss switch state

2. Input power at which insertion loss compresses by 1dB

3. Input power 10dBm/tone

Typical Performance at 22° C

Insertion Loss Isolation

Input Return Loss Output Return Loss

Absolute Maximum Ratings

Max control voltage -8V

Max I/P power +33 dBm

Operating temperature -60 °C to +125 °C

Storage temperature -65 °C to +150 °C

Chip Outline Electrical Schematic

Chip size: 0.71 x 0.91mm

Bond pad size: 90 µm x 90 µm minimum

Chip thickness: 210 µm

Switching Truth Table

A B RF IN-RF1 RF IN-RF 2

0V -5V Low Loss Isolated

-5V 0V Isolated Low Loss

The P35-4215-0 can be connected such that the isolated switch output is either

terminated in 50 Ωor in a reflective short circuit. A reflective configuration is obtained

by bonding GND-R1 and GND-R2 to ground. A terminated configuration is obtained

by bonding GND-T1 and GND-T2 to ground. In both cases at least two low

inductance bondwires should be attached to each pad.

Chip Handling, Mounting and Bonding

The back of the chip is gold metallized and can be die-attached manually onto gold,

eutectically with Au-Sn (80:20) or with low temperature conductive epoxy. The

maximum allowable chip temperature is 310 °C for 2 minutes. Bonds should be made

onto the exposed gold pads with 17 or 25 microns pure gold, half-hard gold wire.

Bonding should be achieved with the chip face at 225 °C to 275 °C with a heated

thermosonic wedge (approx. 125 °C) and a maximum force of 60 grams. Ball bonds

may be used but care must be taken to ensure the ball size is compatible with the

bonding pads shown. The length of the bond wires should be minimised to reduce

parasitic inductance, particularly those to the RF and ground pads.

Ordering Information

P35-4215-000-200

www.bookham.com 462/SM/00025/200 Issue 1/2

MMICS

Bookham Technology plc

Caswell

Towcester

Northamptonshire

NN12 8EQ

• Tel: +44 (0) 1327 356 789

• Fax: +44 (0) 1327 356 698

rfsales@bookham.com

Important Notice

Bookham Technology has a policy of

continuous improvement. As a result

certain parameters detailed on this flyer

may be subject to change without notice.

If you are interested in a particular product

please request the product specification

sheet, available from any RF sales

representative.

P35-4215-000-200