Product specifications

Two or four isolated outputs
are integrated into one package,
conserving rack space and GPIB
addresses. Dual ranges allow for
more current at lower voltage levels.
The outputs can be connected in
parallel or series to further increase
the flexibility that these products
offer the system designer. Program-
ming is done using industry
standard SCPI commands and
test system integration can be
further simplified be using the
VXIPlug&Play drivers. These
power supplies help reduce test
time with fast up and down pro-
gramming, which is enhanced by
the active down-programmer
which can sink the full rated
current.
These power supplies are very
useful on the R&D bench. The
accuracy of both the programming
and the measurement systems
allow precise control and monitor-
ing of prototype bias power. The
extensive protection features protect
valuable prototypes, including very
fast CV/CC crossover. The power
supply can be controlled from either
the front panel keypad or, for auto-
mated testing, from the GPIB.
High Performance DC Power Supplies speed and accuracy for test optimization
Spe cif icati ons
(at 0° to 55°C unless
otherwise specified)
25 W output 50 W output
More detailed specifications at www.agilent.com/find/6620
73
Up to four fully isolated power supplies in a 3U package
Fast, low-noise outputs
Dual-range, precision low current measurement
Built-in measurements and advanced programmable features
Protection features to ensure DUT safety
6625A, 6626A, 6628A, 6629A
Precision Multiple-Output
25 W-50 W GPIB
Output power Low-range volts, amps 0 to 7 V, 0 to 15 mA 0 to 16 V, 0 to 200 mA
High range volts, amps 0 to 50 V, 0 to 500 mA 0 to 50 V, 0 to 1 A or
0 to 16 V, 0 to 2 A
Output combinations
for each model
(total number of outputs) 6625A (2) precision 1 1
6626A (4) precision 2 2
6628A (2) precision — 2
6629A (4) precision — 4
Programming accuracy Voltage 1.5 mV + 0.016% (low) 3 mV + 0.016% (low)
(at 25°C ±5°C) 10 mV + 0.016% (high) 10 mV + 0.016% (high)
Current 15 µA + 0.04% (low) 185 µA + 0.04% (low)
100 µA + 0.04% (high) 500 µA + 0.04% (high)
Readback accuracy Voltage 0.016% + 2 mV (low) 0.016% + 3.5 mV (low)
(at 25°C ±5°C) 0.016% + 10 mV (high) 0.016% + 10 mV (high)
±Current 0.03% + 15 µA (low) 0.04% + 250 µA (low)
0.03% + 130 µA (high) 0.04% + 550 µA (high)
Ripple and noise Constant voltage rms 500 µV 500 µV
(peak-to-peak, 20 Hz to 20 MHz; peak-to-peak 3 mV 3 mV
rms, 20 Hz to 10 MHz)
Constant current rms 0.1 mA 0.1 mA
Load regulation Voltage 0.5 mV 0.5 mV
Current 0.005 mA 0.01 mA
Load cross regulation Voltage 0.25 mV 0.25 mV
Current 0.005 mA 0.01 mA
Line regulation Voltage 0.5 mV 0.5 mV
Current 0.005 mA 0.01 mA
Transient response time Less than 75 µs for the output to recover to within
change within specfications 75 mV of nominal value following a load
Supplemental Characteristics
(Non-warranted characteristics determined
by design and
useful in applying the product)
Average programming resolution Voltage 460 µV (low) 1 mV (low)
3.2 mV (high) 3.2 mV (high)
Current 1 µA (low) 13 µA (low)
33 µA (high) 131 µA (high)
OVP 230 mV 230 mV
Output programming response time 6 ms 6 ms
(time to settle within 0.1% of full scale output, after Vset command has been processed)