The 4A SpikeSafe Source Measure Unit supplies precision DC, continuous pulse and single pulse current with excellent pulse fidelity. The resulting pulses have nanosecond rise and fall times – key to precise LED, VCSEL, and Laser Diode photometric and electrical measurements. A precision hardware-controlled timing system synchronizes source, measure and external instrumentation.
Smart measurements contain just the data you need, from a full waveform capture that shows a device’s heating curve, to a single precisely-timed voltage measurement that corresponds to a pulsed light measurement. Smart measurements eliminate the need to transfer and post-process large data sets. With Spikesafe SMU there is confidence in the measurements; select measurement points captured per pulse will be time aligned for each pulse.
Devices being tested are protected with a gentle turn-on during ramp-up and with SpikeSafe load protection during operation. The 4A SpikeSafe Source Measure Unit load protection continuously monitors voltage and current patterns and instantly shuts down the drive current when device anomalies are detected.
The notable specifications for this current source are as follows: the low range output current accuracy is 0.04%+175µA. The high range output current accuracy is 0.08%+1mA. The pulse width range is 1µs-15000s and the pulse width accuracy is 1µs. The pulse rise/fall time is 200ns-3µs and the typical pulse width jitter is 30ns. This model offers total output power of 500W.
4A Source Pulse Shapes
Precision pulsing is key to best practices measurements. The 4A SpikeSafe Source Measure Unit offers programmable pulse width flexibility. It is capable of long pulse widths (ms to seconds) and short pulse widths (100us pulse widths and faster). With the pulse source, minimum 10us pulse widths are available with upgrades for fast precision pulsing (1us pulse widths). Programmable load tuning alters the SpikeSafe to compensate for load conditions, cable impedance and length.
Learn more about our SpikeSafe Source Measure Units here.