Keithley Instruments, Inc.
28775 Aurora Road
Cleveland, Ohio 44139
1-888-KEITHLEY
www.keithley.com
Model 2635/2636
System SourceMeter
®
Specifications
Specifications are subject to change without notice.
Page 2 of 8
SPEC-2635_2636 Rev. A / September 2007
Specifications Category
Specifications
Overshoot
< ± (0.1% + 10 mV) (typical )
• Step size = 10% to 90% of range, resistive load, maximum -
current limit/compliance.
Guard Offset Voltage
< 4 mV
• Current < 10 mA
CURRENT SOURCE SPECIFICATIONS
Specifications Category
Specifications
RANGE PROGRAMMING
RESOLUTION
ACCURACY (1 Year)
23°C ± 5°C
± (% rdg. + amps)
TYPICAL NOISE
(peak-peak)
0.1 Hz–10 Hz
1.00000 nA
20 fA
0.15% + 2 pA
800 fA
10.0000 nA
200 fA
0.15% + 5 pA
2 pA
100.000 nA
2 pA
0.06% + 50 pA
5 pA
1.00000 µA
20 pA
0.03% + 700 pA
25 pA
10.0000 µA
200 pA
0.03% + 5 nA
60 pA
100.000 µA
2 nA
0.03% + 60 nA
3 nA
1.00000 mA
20 nA
0.03% + 300 nA
6 nA
10.0000 mA
200 nA
0.03% + 6 µA
200 nA
100.000 mA
2 µA
0.03% + 30 µA
600 nA
1.00000 A
4
20 µA
0.05% + 1.8 mA
70 µA
Current Programming
Accuracy
1.50000 A
4
50 µA
0.06% + 4 mA
150 µA
Temperature
Coefficient
± (0.15 × accuracy specification)/°C
• For temperatures (0° – 18°C & 28° – 50°C)
Maximum Output
Power and Source/Sink
Limits
4
30.3 W per channel maximum.
• ± 1.515 A @ ± 20 V
• ± 101 mA @ ± 200 V
• Four-quadrant source or sink operation.
Current Regulation
Line: 0.01% of range
Load: ± (0.01% of range + 100pA).
Voltage
Limit/Compliance
5
Bipolar voltage limit (compliance) set with single value. Minimum
value is 10 mV. Accuracy is the same as current source.
3
For sink mode operation (quadrants II and IV), add 12% of limit range and ±0.02% of limit setting to corresponding current limit accuracy
specifications. For 1A range add an additional 40mA of uncertainty.
4
Full power source operation regardless of load to 30°C ambient. Above 30°C and/or power sink operation, refer to Section 8 – “Operating
Boundaries” in the Series 2600 Reference Manual for additional power derating information
5
For sink mode operation (quadrants II and IV), add 10% of compliance range and ±0.02% of limit setting to corresponding voltage source
specification. For 200mV range add an additional 120mV of uncertainty.