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6220/6221

6220, 6221 Current Sources
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dsexton
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Joined: January 13th, 2014, 10:07 am
Country: United States

6220/6221

Post by dsexton » January 13th, 2014, 10:12 am

We're looking into using one of these sources as a pulsed calibration source and the transition time is an important factor to know. Does anyone using this device have any specifications for what rise and fall times are for these devices when operating as a DC current source in pulsed mode?
Thanks!

Dale C
Keithley Applications
Keithley Applications
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Re: 6220/6221

Post by Dale C » January 14th, 2014, 12:10 pm

No specs in the transition from one value to another value in DC mode.
The Square Wave mode would help. I see that is about 2usec rise time.

hnoor0011
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Country: Pakistan

Re: 6220/6221

Post by hnoor0011 » December 11th, 2015, 1:55 am

Does anyone using this device have any specifications for what rise and fall times are for these devices when operating as a DC current source in pulsed mode?
NOOR

Dale C
Keithley Applications
Keithley Applications
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Joined: June 10th, 2010, 6:22 am
Country: United States
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Re: 6220/6221

Post by Dale C » December 11th, 2015, 6:23 am

Are we considering Volts / second or Amps / second?

If it’s V/s, the slew rate is defined by the maximum current available for slewing. But the 6221 is a current source, so that current is just is whatever the user has programmed as the source value. So the slew rate would be defined by I_¬pulse / C_load.

If it’s A/s, we don’t have a specific “slew rate” – rather, the current settles to the programmed value as defined in the “Settling Time” section of the datasheet.

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