Test supplies have impeccable performance, pedigree
Designed to address a wide range of sourcing requirements for characterizing components, circuits, modules, and complete devices, Series 2200 general-purpose benchtop programmable dc power supplies combine top-notch voltage and current output accuracy with a cost-effective price, flexible operation, and ease of use features. The first gp supplies to be offer by the company, they are heirs to the sophisticated V-I technology of their maker, Keithley Instruments, long known and highly regarded for their source-measure units.
The series consists of five new supplies with different voltage and current output levels: the 2200-20-5 (20 V/5 A), 2200-30-5 (30 V/5 A), 2200-32-3 (32 V/3 A), 2200-60-2 (60 V/2.5 A) and 2200-72-1 (72 V/1.2 A); maximum power output is equal to the V-I product. Voltage and current output accuracy is 0.03% and 0.05%, respectively, and both accuracy figures are said to be significantly better than for competitors’ general-purpose supplies. The 2200 supplies 1-mV and 0.1-mA resolution well-suits them for low power characterizations, such as measuring idle- and sleep-mode currents, and they have remote-sense terminals in back and less than 5-mVp-p noise. A dual-line display shows both programmed and actual outputs.
Despite their relatively low price, the units have very sophisticated features. Each model can store 40 frequently used test setups for later recall and reuse. Further, a built-in list mode function supports storage of up to seven custom test sequences of up to 80 steps. Once saved, a sequence can be triggered to run manually from the front panel, automatically via an external trigger, or by using programmable interface commands.
Users can also program a voltage-limit value to prevent the supply from outputting excessive voltage (even if a voltage higher than the limit is entered into the instrument), and a programmable over-voltage function causes the output to drop to less than 1 V if the over-voltage limit is reached. These fail-safes are in addition to the current limit setting function, which controls the level of current that can flow into the DUT. Also, a programmable timer can be used to turn off the output after a specified time interval.
To adjust the supplies’ voltage and current, values can be directly entered using the front-panel numeric keypad, or dialed in with a rotary knob with adjustable step size. The supplies can also be controlled over either a GPIB or USB interface; the USB interface is TMC compliant, so standard SCPI command syntax can be used. Instrument drivers are included. ($925 or $1090, depending on model — available in December.)
Keithley Instruments , Cleveland , OH
Information 888-534-8453
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