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Agilent Switches, Solid State


Agilent solid state switches are more reliable and exhibit longer lifetimes than their electromechanical counterparts due to their superior resistance to shock, vibration and mechanical wear. They also offer faster switching times. However, solid state switches have higher insertion loss than electromechanical switches due to their higher innate ON resistance. Therefore Agilent solid state switches are preferred in systems where fast switching and long lifetime are essential.

Agilent Solid state switches are often used in switch matrix systems for testing of semiconductor devices where high switching speed is critical and power handling requirements are lower.

Agilent solid state switches are carefully designed to ensure extremely low video leakage. Video leakage refers to the spurious signals present at the RF ports of the switch when it is switched without an RF signal present. These signals arise from the waveforms generated by the switch driver and, in particular, from the leading edge voltage spike required for high-speed switching of PIN diodes. The amplitude of the video leakage depends on the design of the switch and the switch driver. Video leakage can damage sensitive devices, such as satellite transponders, which use low-power switching (–100 dBm ON/OFF) and instruments, depending on the amplitude of the video leakage. For instance, P9400 series PIN diode switches offer video leakage of 10mV to 500mV, which is extremely low for a PIN diode switch. Agilent U9397 and U9400 FET switches have less than 30mVpp video leakage.

Fast switching speed is important in ATE applications where testing throughput is critical. It is especially important in applications that require the stacking of multiple switches in series. Agilent solid state switches exhibit fast switching speed to enable high throughput.

Agilent solid state switches are widely used in both basic signal routing and application specific switch matrices such as tree matrices and full access matrices as well as for multisource multi-DUT switching in ATE systems.


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