P35-4227-0 Marconi Optical Components GaAs MMIC SPDT Reflective/Terminated Switch, DC - 6GHz Features · · · · · Broadband performance High Isolation; 40dB typ at 3GHz Low insertion loss; 0.8dB typ at 3GHz Ultra low DC power consumption Fast switching speed; 3ns typical Description The P35-4227-0 is a high performance Gallium Arsenide single pole double throw broadband RF switch. It is suitable for use in broadband communications and instrumentation applications. The RF outputs can be terminated with either a 50Ω load or short circuit. The switch is controlled by the application of complimentary 0V/-5V or 0/-8V signals to the control lines in accordance with the truth tables below. There is a choice of two line or four line control. Four line control allows the use of an 'all-off' state. This die is fabricated using MOC’s 0.5µm gate length MESFET process (S20) and is fully protected using Silicon Nitride passivation for excellent performance and reliability. This device is also available in a range of packages. Electrical Performance Ambient temperature = 22±3°C , ZO = 50Ω , Control voltages = 0V/-5V unless otherwise stated Parameter Insertion Loss Isolation Input Return Loss1 Output Return Loss1 1dB power compression point2 Switching Speed Third Order Intercept3 Conditions DC - 1GHz 1 - 4GHz 4 - 6GHz DC - 1GHz 1 - 4GHz 4 - 6GHz DC - 1GHz 1 - 4GHz 4 - 6GHz DC - 1GHz 1 - 4GHz 4 - 6GHz 0/-5V Control; 50MHz 0/-5V Control;2GHz 0/-8V Control; 50MHz 0/-8V Control; 2GHz 50% Control to 10%90%RF 500MHz 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. Reflective Min Typ Max 48 34 30 20 18 15 20 18 15 - 0.8 1.0 1.3 45 35 32 27 26 25 30 28 25 20 27 22 30 3 46 1.2 1.3 1.8 8 - Terminated Min Typ Max Units - 48 34 30 20 18 15 20 18 15 - dB dB dB dB dB dB dB dB dB dB dB dB dBm dBm dBm dBm ns dBm 0.7 0.9 1.2 55 40 33 24 20 18 24 24 20 21 27 22 30 3 46 1.2 1.3 1.6 8 - Typical Performance at 22°C Insertion Loss Isolation Input Return Loss Output Return Loss Absolute Maximum Ratings Max control voltage Max I/P power Operating temperature Storage temperature -8V +30 dBm -60°C to +125°C -65°C to +150°C P35-4227-0 Marconi Optical Components Chip Outline Die size Bond pad size Die thickness: Electrical Schematic 0.99 x 0.64mm 90µm x 90µm minimum 200µm Switching Truth Table (2 line control) 1&2 3&4 RF IN-RF1 RF IN-RF2 0V -5V -5V 0V Low loss Isolated Isolated Low loss Switching Truth Table (4 line control) 1 2 3 4 RF IN-RF1 RF IN-RF 2 0V -5V 0V 0V -5V -5V -5V 0V -5V -5V 0V 0V Low loss Isolated Isolated Isolated Low loss Isolated Handling, Mounting and Bonding Instructions The back of the die 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 die temperature is 310°C for 2 minutes. Bonds should be made onto the exposed gold pads with 17 or 25 microns pure gold or half-hard gold wire. Bonding should be achieved with the die 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. If all four control pads are uniquely connected then the 'all-off' state is achievable in accordance with the truth table above. Alternatively simpler two-line control may be used, whereby each control line should be bonded to a pair of control pads. If the RF outputs are to be terminated in a 50Ω load then the pads marked 'T' should be connected to ground. Otherwise the pads marked 'R' should be grounded to provide a short circuit termination. Ordering Information: P35-4227-0 462/SM/00042/200 Iss 1/2 The data and product specifications are subject to change without notice. These devices should not be used for device qualification and production without prior notice. © Marconi Optical Components Ltd 2001 MOC, Caswell, Towcester, Northants, NN12 8EQ, Tel:+44 1327 356468 Fax +44 1327 356698 www.moc.marconi.com