DTL3A Datasheet, PDF (1/5 Pages) List of Unclassifed Manufacturers – DIGITALLY PROGRAMMABLE, 2A/200V 100WATT, ELECTRONIC LOADS

NEW
®
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INNOVATION and EXCELLENCE
DTL Series
DTL3A Model
Digitally Programmable, 2A/200V
100 Watt, Electronic Loads
Features
■ 12-bit, optically isolated (500Vdc),
CMOS/TTL-compatible serial input
■ 0-2 Amp output in 500µA increments
■ Output voltage to 200 Volts
■ Output power to 100 Watts
■ 10MΩ minimum output impedance
■ ±500µA offset error; ±0.1% gain error
■ 100µsec full-scale step response
■ Update rates to 20kHz
■ Operate in parallel for higher power
■ Miniature, 2" x 2" metal package
Applications
■ Static/dynamic power-supply burn-in
■ Power-supply test and characterization
■ Battery capacity testing
■ Current-source testing
■ Capacitor discharge testing
■ Real-time load simulation
DATEL’s new DTL3A is a digitally controlled, optically isolated, serial-input elec-
tronic load that offers high compliance voltage and unprecedented control over low-
level currents. The DTL3A is essentially a computer controlled current source that
sinks currents from 0 to 2 Amps, at loading voltages from 2.5 to 200 Volts, up to a
maximum power of 100 Watts. The DTL3A accepts a serialized, 12-bit, CMOS/TTL
digital input word, optically isolates (500Vdc) the data, latches it, and presents it to an
on-board, 12-bit, digital-to-analog (D/A) converter. The D/A output drives a near-ideal
(10MΩ output impedance), voltage-controlled current source.
One LSB (least signi cant bit) of the D/A corresponds to a mere 500µA (0.025% of
2A) of load current. Combined with the DTL3A’s ±500µA max. offset error and ±0.1%
max. gain error, this precise digital control gives users extraordinary command over
the generation of low-level load currents. A 100mA current, for example, is guaranteed
to have ±1mA accuracy over all speci ed load-voltage conditions.
The DTL3A has impressive speed performance. Digital update rates to 20kHz
are possible, and settling time for a full 2A step is 100µsec. The unit is housed in a
thermally ef cient, 2" x 2" x 0.5" metal package that has an aluminum baseplate with
through-hole spacers for easy pcb mounting and/or external heat-sink attachment.
The DTL-3A has an output compliance-voltage requirement 2.5 to 200V. Should
the output/load voltage drop below the 2.5V minimum required for proper biasing,
an internal monitoring circuit activates the DTL3A's output Fault line. See DATEL’s
DTL2A-LC for compliance voltages as low as 0.6V.
DATEL’s electronic loads, controller boards and companion software are outstand-
ing building-block components for power-supply (AC/DC and DC/DC) and power-
component (diodes, FET’s, etc.) burn-in and test systems. They are an extremely
reliable, cost-effective solution that enables you to quickly con gure exible, impres-
sively accurate systems.
CONTROL STROBE (CS)
INPUT
BUFFERS
OPTO
ISOLATORS
CLOCK (CLK)
SERIAL DATA INPUT (SDI)
DATA
LATCH
LATCH DATA (LD)
12-BIT
D/A
AMPLIFIER
AND
CURRENT
SENSOR
+5V SUPPLY
GROUND
ISOLATED
DC/DC
CONVERTER
UNDERVOLTAGE
DETECTION
Figure 1. Simplified Schematic
+LOAD
+LOAD
–LOAD
–LOAD
POWER DEVICE
UNDER TEST
FAULT
DATEL, Inc., Mans eld, MA 02048 (USA) · Tel: [phone] Fax: [phone] · Email: [e-mail] · Internet: www.datel.com