General Information36
Table 1-4b. Supplemental Characteristics for Series 668xA1
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 (VP & IP)
Input Signal (source must be isolated)
VP Input Signal:* 0 to -5.0 V
+ IP Input Signal:** 0 to +5.0 V
Input Impedance
VP and IP 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: 1For Performance Specifications, see Table 1-4a.