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HIGH POWER SMUS WITH UNPRECEDENTED
POWER, PRECISION, AND SPEED
Measurement
Interval
Measure
Delay
Measurement
Trig ger
Source Action
Trig ger
EndPulse
Action Trigger
Time
25
20
15
10
5
0
3.0
2.5
2.0
1.5
1.0
0.5
0.0
Current (A)
Voltage (V)
Time (µs)
Measuring at the Top of the Pulse
0 50 100 150 200 250 300
Digitized Current (A)
Spot Mean of Current
Digitized Voltage (V)
Spot Mean of Voltage
Achieving Fast Pulse Measurements
for Today’sHigh-Power Devices
Green initiatives and energy efciency standards worldwide have motivated
engineers to nd ways to design more efcient semiconductor devices and
integrated circuits, and measuring the true state of these devices without
the effects of self-heating is critical. Pulsed characterization is a solution
to this issue. The use of a pulsed stimulus demands faster measurements.
For high-speed digitization or waveform capture applications that require
these capabilities, Keithley’s High Power SourceMeter
®
Instrument also includes
two high-speed ADCs for measuring current and voltage simultaneously. These
ADCs use sampling technology like an oscilloscope and take snapshots of the
signal over time. Each high-speed ADC samples at a rate of up to 1MHz with
18-bit resolution, which is much higher than the typical 8-bit resolution of an
oscilloscope, resulting in more precise transient characterization in comparable
bandwidths. Coupled with the ability to measure asynchronously from the source,
this feature makes the 2651A and 2657A ideal for many waveform capture and
transient characterization applications.
HIGH SPEED SYSTEM
SMUS FOR DEMANDING
APPLICATIONS
• Source or sink:
2,000W of pulsed power (±40V, ±50A)
200W of DC power (±10V @ ±20A, ±20V@ ± 10A, ±40V @ ±5A)
• Easily connect two units (in series or parallel) to create solutions up to ±100A or ±80V
• 1pA resolution enables precise measurement of very low leakage currents
• 1μs per point (1MHz), 18-bit sampling, accurately characterizes transient behavior
• 1% to 100% pulse duty cycle for pulse width modulated (PWM) drive schemes and device specic
drive stimulus
2651A 50 Amp High Power System SourceMeter SMU Instrument
2651A
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• Source or sink up to 180W of DC or pulsed power, (±3000V @ 20mA, ±1500V @ 120mA)
• 1fA low current resolution
• Dual 22-bit precision ADCs and dual 18-bit 1μs per point digitizers for high accuracy
and high speed transient capture
• Fully TSP
®
compliant for easy system integration with Series 2600B System SourceMeter models
and 24XX Graphical SMUs
2657A 3000 Volt High Power System SourceMeter SMU Instrument
26 57A
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