SMU Force Sense Selector Switch
Overview
The Vektrex Pulsed Source Measure Unit (PSMU) Force Sense Selector Switch is an optional accessory that combines two essential capabilities into one seamless component: an integrated connect/disconnect switch and an A/B switch function. This option is available with all Vektrex SMU models.
Applications
- Device characterization
- High speed production
- Wafer probing
- Automated tests
- System upgrade to add capability available with Vektrex PSMU including high current, high voltage, CW
Streamlining Production With Connect/Disconnect Function
The connect/disconnect function utilizes a fully isolated switching architecture that rapidly disconnects power from the device under test (DUT). This eliminates additional control steps, streamlines test sequences, and improves overall throughput.
In practice, the user benefits include
- Connect the PSMU to the device under test when ready to source current and measure voltage.
- Disconnect the DUT electrically when changing devices, moving the probe point, adjusting the setup, or protecting the DUT.
- Increase efficiency by eliminating the need to enable and disable current
- Isolate the DUT between tests so the instrument is not actively connected.
- Reduce cable handling, which helps avoid wiring mistakes and wear on connectors.
- Improve safety and repeatability, especially in production or automated test setups.
The connect/disconnect function fully isolates the DUT from the source/measure path when the switch is open.
Instrument Integration With A/B Switch Function
The A/B switch function enables secondary instruments to share existing load wiring and be selectively switched into the measurement path as needed.
According to Vektrex CTO, “Many test systems rely on specialized instrumentation for ultra-low current and reverse-voltage measurements. While these measurements are important, they typically represent only a small portion of the overall test process. With a wide variety of specialized instruments already deployed in production environments, the A/B switching capability simplifies integration and system upgrades while enabling higher current operation, faster pulsing, and improved measurement performance.”
With this setup, one can achieve the best of both worlds. The Vektrex SMU provides high power, fast pulses and improved measurements; while other instruments provide low current, low voltage, and current leakage measurements.
The Force Sense Selector Switch is a true mechanical switch integrated in the Vektrex SMU, as opposed to solid state or software switch found in other devices. For existing systems, it is possible to integrate this feature to an existing SMU all while retaining the existing software and load wiring.
Specifications
| Force Sense Selector Switch Option | |
|---|---|
| A/B Function | Used to route external auxiliary device to the Force and Sense output terminals. Allows SMU and auxiliary instrument to share load wiring. |
| Connect/Disconnect Function | Rapid connect/disconnect of load to protect probe points. Eliminates time to disable/enable power speeding production. |
| Control | One SCPI command, programmable power-on default, switching time < 1 ms |
| Field Replaceable | Yes |
| Guarded | Yes |
| Relay Switch |
Force Sense Selector Switch is available with all Vektrex SMU.
Additional Information
Contact Us
For more information on the Force Sense Selector Switch and related products, visit our contact page.