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General Information36
Table 1-4b. Supplemental Characteristics for Series 668xA
1
Parameter Agilent Model Number
6680A 6681A 6682A 6683A 6684A
Output Programming Range (maximum programmable values)
Voltage:
5.125 V 8.190 V 21.50 V 32.75 V 41.0 V
Current:
895 A 592 A 246 A 164 A 131 A
Overvoltage Protection (OVP):
6.25 V 10.0 V 25.2 V 38.4 V 48.0 V
Typical Resolution
Voltage:
1.35 mV 2.15 mV 5.7 mV 8.6 mV 10.8 mV
Current:
235 mA 155 mA 64 mA 43 mA 34 mA
Overvoltage Protection (OVP):
30 mV 45 mV 120 mV 180 mV 225 mV
Accuracy ( @ 25 ±5 °C)*
Overvoltage Protection (OVP):
120 mV 180 mV 470 mV 720 V 900 V
Analog Programming (VP): ±0.3%±
10 mV 20 mV 50 mV 75 mV 100 mV
Analog Programming (IP):±2% ±
8 A 4 A 2 A 1.5 A 1 A
Current Monitor (IM):±2%±
8 A 4 A 2 A 1.5 A 1 A
Analog Programming (V
P
& I
P
)
Input Signal (source must be isolated)
VP Input Signal:*
0 to -5.0 V
+ IP Input Signal:**
0 to +5.0 V
Input Impedance
V
P
and I
P
Inputs:
> 30 kΩ
*Referenced to common
↓
P. ** Referenced to -IP differential input signal
Current Monitor (IM) Output Signal: -0.125 V to +5 V
Drift Temperature Stability (following a 30-minute warmup, change in output over eight hours under constant line,
load, and ambient temperature)
Voltage: 0.02% +
0.15 mV 0.24 mV 0.63 mV 0.96 mV 1.2 mV
Current: 0.02% +
315 mA 170 mA 71 mA 47 mA 38 mA
Temperature Coefficients (change per °C after 30-minute warmup)
Voltage:
50 ppm + 0.05 mV 0.08 mV 0.21 mV 0.32 mV 0.40 mV
Current:
75 ppm + 110 mA 62 mA 26 mA 17 mA 14 mA
Voltage Readback:
60 ppm + 0.075 mV 0.1 mV 0.25 mV 0.40 mV 0.50 mV
±Current Readback:
85 ppm + 135 mA 90 mA 37 mA 25 mA 20 mA
Overvoltage Protection (OVP):
200 ppm + 1.25 mV 1.8 mV 4.7 mV 7.2 mV 9.0 mV
Typical Common Mode Noise Current*
rms:
peak-to-peak:
1.5 mA
10 mA
1.5 mA
10 mA
3 mA
20 mA
3 mA
20 mA
3 mA
20 mA
* Referenced to signal ground binding post.
Output Float Voltage (maximum from output signal ground): ±60 Vdc
Notes:
1
For Performance Specifications, see Table 1-4a.