Specifications are subject to change without notice.
Keithley Instruments, Inc.
28775 Aurora Road
Cleveland, Ohio 44139
1-888-KEITHLEY
www.keithley.com
1. SPECIFICATION CONDITIONS
Models 2635/2636
System SourceMeter
®
Specifications
This document contains specifications and supplem
SourceMeters
leaving the factory the 2635 and 2636 meet these specif
warranted, apply at 23°C, and are provided solely as useful information.
The source and measurement accuracies
SourceMeters® B (2636) terminals under the following conditions:
1. 23°C ± 5°C, < 70% relative humidity.
2. After two-hour warm-up.
3. Speed normal (1 NPLC).
4. A/D auto-zero enabled.
5. Remote sense operation or properly zeroed local operation.
6. Calibration period: one year.
2. SOURCE SPECIFICATIONS
VOLTAGE SOURCE SPECIFICATIONS
Specifications Category Specifications
®
. Specifications are the standards against
are specified at the SourceMeters
RANGE PROGRAMMING
Voltage Programming
Accuracy
Temperature
Coefficient
Maximum Output
Power and Source/Sink
Limits
1
2
200.000 mV 5 µV 0.02% + 375 µV 20 µV
2.00000 V 50 µV 0.02% + 600 µV 50 µV
20.0000 V 500 µV 0.02% + 5 mV 300 µV
200.000 V 5 mV 0.02% + 50 mV 2 mV
± (0.15 × accuracy specification)/°C
30.3 W per channel maximum.
ental information for the Models 2635 and 2636 System
which the Models 2635 and 2636 are tested. Upon
ications. Supplemental and typical values are non-
ACCURACY (1 Year)
RESOLUTION
®
CHANNEL A (2635 and 2636) or
TYPICAL NOISE
23°C ± 5°C
± (% rdg. + volts)
(peak-peak)
0.1 Hz 10 Hz
Voltage Regulation
Noise
Current
Limit/Compliance
1
Add 50 µV to source accuracy specifications per volt of HI lead drop.
2
Full power source operation regardless of load to 30°C ambient.
SPEC-2635_2636 Rev. A / September 2007
3
Line: 0.01% of range
Load: ± (0.01% of range + 100 µV).
< 20 mV peak-peak (typical), < 3 mV RMS (typical)
Bipolar current limit (compliance) set with single value. Minimum
value is 100 pA. Accuracy is the same as current source.
for additional power derating information.
Operating
Page 1 of 8
Specifications are subject to change without notice.
Models 2635/2636
Keithley Instruments, Inc.
28775 Aurora Road
Cleveland, Ohio 44139
1-888-KEITHLEY
www.keithley.com
Specifications Category Specifications
< ± (0.1% + 10 mV) (typical )
Overshoot
Guard Offset Voltage
CURRENT SOURCE SPECIFICATIONS
Specifications Category Specifications
Current Programming
Accuracy
Temperature
Coefficient
Maximum Output
Power and Source/Sink
4
Limits
< 4 mV
RANGE PROGRAMMING
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 øA 20 pA 0.03% + 700 pA 25 pA
10.0000 øA 200 pA 0.03% + 5 nA 60 pA
100.000 øA 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 øA 200 nA
100.000 mA 2 øA 0.03% + 30 øA 600 nA
1.00000 A
1.50000 A
± (0.15 × accuracy specification)/°C
30.3 W per channel maximum.
System SourceMeter® Specifications
current limit/compliance.
ACCURACY (1 Year)
RESOLUTION
4
4
20 øA 0.05% + 1.8 mA 70 øA
50 øA 0.06% + 4 mA 150 øA
23°C ± 5°C
± (% rdg. + amps)
TYPICAL NOISE
(peak-peak)
0.1 Hz 10 Hz
Line:
Current Regulation
Voltage
Limit/Compliance
3
For sink mode operation (quadrants II and IV), add 12% of lim
specifications. For 1A range add
4
Full power source operation regardless of load to 30°C ambient.
5
For sink mode operation (quadrants II and IV), add 10% of comp
specification. For 200mV range add
Page 2 of 8 SPEC-2635_2636 Rev. A / September 2007
5
an additional 40mA of uncertainty.
al for additional power derating information
an additional 120mV of uncertainty.
0.01% of range
Load: ± (0.01% of range + 100µV).
Bipolar voltage limit (compliance) set with single value. Minimum
value is 10 mV. Accuracy is the same as current source.
it range and ±0.02% of limit setting to corresponding current lim
liance range and ±0.02% of limit setting to corresponding voltag
it accuracy
Operating
e source
Specifications are subject to change without notice.
Models 2635/2636
Keithley Instruments, Inc.
28775 Aurora Road
Cleveland, Ohio 44139
1-888-KEITHLEY
www.keithley.com
Specifications Category Specifications
< ± 0.1% (typical)
Overshoot
ADDITIONAL SOURCE SPECIFICATIONS
Specifications Category Specifications
Transient Response
Time
Voltage Source Output
Settling Time
< 70 µs for the output to recover to 0.1% for a 10% to 90% step
change in load.
Time required to reach 0.1% of final value after source level
command is processed on a fixed range.
Time required to reach 0.1% of final value after source level
command is processed on a fixed range.
System SourceMeter® Specifications
current limit/compliance
additional test conditions
Range Settling Time
200 mV < 50 µs (typical)
2 V < 50 µs (typical)
20 V < 110 µs (typical)
200 V < 700 µs (typical)
Current Range
Current Source Output
Settling Time
DC Floating Voltage Output can be floated up to ± 250 VDC
Remote Sense
Operating Range
Voltage Output
Headroom
6
Add 50 µV to source accuracy specifications per volt of HI lead drop.
SPEC-2636_2636 Rev. A / September 2007
6
Maximum voltage between HI and SENSE HI = 3 V
Maximum voltage between LO and SENSE LO = 3V
200 V Range
20 V Range
1 mA < 100 µs (typical)
100 µA < 150 µs (typical)
10 µA < 500 µs (typical)
1 µA < 2 ms (typical)
100 nA < 20 ms (typical)
10 nA < 40 ms (typical)
1 nA < 150 ms (typical)
source leads. (maximum 1
source leads. (maximum 1
< 120 µs (typical) (Rload > 6
per source lead)
per source lead)
Settling Time
)
Page 3 of 8
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