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DC POWER SUPPLIES

A Greater Measure of Condence

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A Tektronix Company

Series 2280S

Precision Measurement, Low Noise,

Programmable DC Power Supplies

The Series 2280S Precision Measurement, Low

Noise, Programmable DC Power Supplies are

much more than just sources of clean power;

they are also precision measurement instru-

ments. They can source stable, low noise voltag-

es as well as monitor load currents over a wide

dynamic range from amps to nanoamps. The

Model 2280S-32-6 can output up to 32V at up to

6A; the Model 2280S-60-3 can output up to 60V

at up to 3.2A.

Both supplies use linear regulation to ensure

low output noise and superior load current

measurement sensitivity. A high resolution color

Thin Film Transistor (TFT) screen displays a

wide range of information on measurements.

Soft-key buttons and a navigation wheel combine

with the TFT display to provide an easy-to-navigate user interface that speeds instrument setup and

operation. In addition, built-in plotting functions allow monitoring trends such as drift. These sup-

plies provide the flexibility required for both benchtop and automated test system applications. For

example, they provide a list mode, triggers, and other speed optimization functions to minimize test

time in automated testing applications.

DMM-Quality Low Current Measurements with High Resolution

Unlike conventional power supplies, Series 2280S supplies can also make measurements with up to

6½ digits of resolution. Voltage output measurements can be resolved down to 100µV. These supplies

measure load currents from 100nA to amps and can resolve down to 10nA. Four load current mea-

surement ranges (10A, 1A, 100mA, and 10mA) support measuring a device’s full load current, standby

mode current, and small sleep mode currents with DMM-quality accuracy. The high resolution allows

characterizing small changes in load currents with confidence. It also makes it possible to make a

broad range of measurements on a single range with excellent accuracy across both low and high

current values.

Measure Rapidly Changing Loads

To monitor fast-changing and pulse-like load currents properly, Series 2280S supplies offer the speed

necessary to capture load changes that occur at intervals as short as 140µs. This capability allows

designers and manufacturers of portable, battery-operated devices to monitor load currents easily in

all of a device’s operating modes so they can determine the device’s total power consumption.

This high speed measurement capability allows measuring each state of a power-up load sequence

and a power-down sequence. Measurements can be made as fast as 2500 readings per second, mak-

ing it possible to characterize and test the current draw at each of the start-up states.

Trigger

Delay Measure

Trigger

Delay Measure

Figure 1. Make time-critical measurements on fast-changing or pulse-like loads. An external

trigger initiates the acquisition. Programmable delay and measure times enable measurements

at a specific time on the load current pulse.

• Monitor load currents from

100nA to 6A with high accuracy

• Measure voltage and current

with 6½-digit resolution

• Capture dynamic load currents

as short as 140µs

• Output up to 192W of low

noise, linear regulated power

• Programmable rise and fall

times eliminate voltage

overshoot and undershoot

transients

• Built-in graphing simplifies

analyzing trends or displaying

voltage or current waveforms

• High resolution TFT display

and soft-key/icon-based user

interface simplify power supply

operation

• Programmable output

sequences reduce test times

• Sink up to 0.45A to discharge

voltage quickly

• Digital I/O for direct

communication with other

devices and instruments

• GPIB, USB, and LAN interfaces

• Built-in web page simplifies

automated control/monitoring

• Automate tests easily with

KickStart start-up software

Precision measurement, low noise, programmable DC power supplies

Summary of content (8 pages)

PAGE 1
The Series 2280S Precision Measurement, Low Noise, Programmable DC Power Supplies are much more than just sources of clean power; they are also precision measurement instruments. They can source stable, low noise voltages as well as monitor load currents over a wide dynamic range from amps to nanoamps. The Model 2280S-32-6 can output up to 32V at up to 6A; the Model 2280S-60-3 can output up to 60V at up to 3.2A.
PAGE 2
Precision Measurement, Low Noise, Programmable DC Power Supplies active DC POWER SUPPLIES Precision measurement, low noise, programmable DC power supplies Ordering Information 2280S-32-6 Precision Measurement DC Power Supply, 32V, 6A 2280S-60-3 Precision Measurement DC Power Supply, 60V, 3.
PAGE 3
Perform Semi-Automated Testing Right on Your Bench Test your design over its operating voltage range automatically or study how it responds to DC output changes by using the Series 2280S supplies’ built-in List Mode function. Create and save up to 10 lists of sequenced voltage levels with up to 99 distinct voltages in each list. The duration of each voltage level can be set as short as 1ms or as long as 60s.
PAGE 4
DC POWER SUPPLIES Precision Measurement, Low Noise, Programmable DC Power Supplies Trend Analysis and Load Current Characterization Use the built-in graphing function to monitor the stability of the load current or capture and display a dynamic load current. Or, use it to view a start-up or turn-off load current. Series 2280S supplies can take measurements quickly and store up to 2,500 measurement points.
PAGE 5
Series 2280S Precision Measurement, Low Noise, Programmable DC Power Supplies DC OUTPUT RATINGS Voltage Current Maximum Power 2280S-32-6 0 to 32 V 0 to 6 A 192 W 2280S-60-3 0 to 60 V 0 to 3.2 A 192 W 2280S-32-6 ± (0.02% + 3 mV) 1 mV 2280S-60-3 ± (0.02% + 6 mV) 1 mV 2280S-32-6 ± (0.02% + 2 mV) 0.1 mV 2280S-60-3 ± (0.02% + 4 mV) 0.1 mV VOLTAGE 1 SOURCE SETTING Accuracy Resolution MEASUREMENT 2 (0.5V over-range) Accuracy Resolution ADDITIONAL OFFSET AT FASTER MEASUREMENT SETTINGS 2280S-32-6 0.
PAGE 6
Series 2280S Precision Measurement, Low Noise, Programmable DC Power Supplies SERVICES AVAILABLE Series 2280S specifications 2280S-32-6-EW 1 Additional Year of Factory Warranty (total of 4 years) 2280S-32-6-5Y-EW 2 additional years of factory warranty beyond the 3-Year factory warranty (total of 5 years) C/2280S-32-6-3Y-STD 3 Calibrations Within 3 Years of Purchase C/2280S-32-6-3Y-DATA 3 (ANSI-Z540-1 compliant) Calibrations Within 3 Years of Purchase C/2280S-32-6-3Y-1702 3 (ISO 17025 Accredited) Calibr
PAGE 7
Precision Measurement, Low Noise, Programmable DC Power Supplies PROTECTION 2280S-32-6 ±(0.25% + 0.25 V) 125 mV 6 ms (typical)9 2280S-60-3 ±(0.25% + 0.5 V) 250 mV 6 ms (typical)9 Overcurrent Protection (OCP) Setting Accuracy Resolution Response Time 2280S-32-6 ±(0.25% + 0.10 A) 25 mA 6 ms (typical)9 2280S-60-3 ±(0.25% + 0.10 A) 12.
PAGE 8
Specifications are subject to change without notice. All Keithley trademarks and trade names are the property of Keithley Instruments. All other trademarks and trade names are the property of their respective companies. DC POWER SUPPLIES A Tektronix Company A Greater Measure of Confidence KEITHLEY INSTRUMENTS ■ 28775 AURORA RD. ■ CLEVELAND, OH 44139-1891 ■ 440-248-0400 ■ Fax: 440-248-6168 ■ 1-888-KEITHLEY ■ www.keithley.com BENELUX +31-40-267-5506 www.keithley.nl FRANCE +33-01-69-86-83-60 www.