Specifications

General Information 17
Table 1-1b. Supplemental Characteristics for Series 664xA
1
Parameter Agilent Model Number
6641A 6642A 6643A 6644A 6645A
Output Programming Range (maximum programmable values)
Voltage:
8.190 V 20.475 V 35.831 V 61.425 V 122.85 V
Current:
20.475 A 10.237 A 6.142 A 3.583 A 1.535 A
Overvoltage Protection (OVP):
8.8 V 22.0 V 38.5 V 66.0 V 132.0 V
Average Resolution
Voltage:
2 mV 5 mV 10 mV 15 mV 30 mV
Current:
6 mA 3 mA 2 mA 1.2 mA 0.5 mA
Overvoltage Protection (OVP):
13 mV 30 mV 54 mV 93 mV 190 mV
Accuracy
Overvoltage Protection (OVP):
160 mV 400 mV 700 mV 1.2 V 2.4 V
Analog Programming (VP):*
0.36% + 6 mV 15 mV 27 mV 45 mV 90 mV
Analog Programming (IP):*
7.6% + 18 mA 9.2 mA
1.5% + 5.5 mA 3.2 mA 1.4 mA
Current Monitor (+IM):*
7.7% + 65 mA 32 mA
1.6 % + 8.1 mA 7.1 mA 1.8 mA
*Referenced to supply output
Drift Temperature Stability (following a 30-minute warmup, change in output over 8 hours under constant line, load,
and ambient temperature)
Voltage: 0.02% +
0.4 mV 1 mV 2 mV 3 mV 6 mV
Current: 0.02% +
16 mA 6 mA 3 mA 2 mA 1 mA
Temperature Coefficients (change per °C)
Voltage:
60 ppm + 0.1 mV 0.2 mV 0.3 mV 0.5 mV 1.1 mV
+Current:
95 ppm + 0.82 mA 0.41 mA 0.18 mA 0.12 mA 0.04 mA
Voltage Readback:
60 ppm + 0.2 mV 0.5 mV 0.75 mV 1.3 mV 2.6 mV
+Current Readback:
95 ppm + 1.2 mA 0.62 mA 0.33 mA 0.20 mA 0.08 mA
--Current Readback:
110 ppm + 1.2 mA 0.62 mA 0.33 mA 0.20 mA 0.08 mA
Overvoltage Protection (OVP):
200 ppm + 1.6 mV 3.3 mV 5 mV 13 mV 24 mV
Analog Programming (VP):
60 ppm + 0.1 mV 0.25 mV 0.4 mV 0.7 mV 1.25 mV
Analog Programming (IP):
90 ppm + 0.56 mA 0.28 mA 0.17 mA 0.1 mA 0.04 mA
Current Monitor (+IM):
75 ppm + 0.61 mA 0.3 mA 0.06 mA 0.06 mA 0.02 mA
Maximum Input Power:
480 VA; 400 W, 60 W with no load
Notes:
1
For Performance Specifications, see Table 1-la.
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