Agilent/Keysight E3631A

The Agilent/Keysight E3631A is an 80 W triple-output DC power supply engineered for benchtop and system-level testing. Three independent outputs deliver 0–6 V at 5 A, 0–+25 V at 1 A, and 0–−25 V at 1 A with exceptionally clean performance: voltage ripple and noise below 350 µVrms / 2 mV p-p across all outputs. The 6 V output is electrically isolated from the ±25 V outputs to ±240 Vdc, preventing cross-circuit interference.

– Technical Specifications

Output 1 (0–6V, 0–5A)
• Voltage ripple & noise: <350 µVrms / 2 mV p-p
• Current ripple & noise: <2 mA rms
• Load regulation: <0.01% + 2 mV (voltage); <0.01% + 250 µA (current)
• Line regulation: <0.01% + 2 mV (voltage); <0.01% + 250 µA (current)
• Programming accuracy: 0.05% + 20 mV (voltage); 0.15% + 4 mA (current)
• Readback accuracy: 0.05% + 10 mV (voltage); 0.15% + 4 mA (current)
• Resolution: 1.5 mV / 0.1 mA (program/readback); 10 mV / 1 mA (meter)

Output 2 & 3 (0–±25V, 0–1A)
• Voltage ripple & noise: <350 µVrms / 2 mV p-p
• Current ripple & noise: <500 µA rms
• Load regulation: <0.01% + 2 mV (voltage); <0.01% + 250 µA (current)
• Line regulation: <0.01% + 2 mV (voltage); <0.01% + 250 µA (current)
• Programming accuracy: 0.05% + 20 mV (+25V); 0.1% + 5 mV (−25V) voltage; 0.15% + 4 mA / 0.2% + 10 mA current
• Readback accuracy: 0.05% + 10 mV (+25V); 0.1% + 5 mV (−25V) voltage; 0.15% + 4 mA / 0.2% + 10 mA current
• Resolution: 0.5 mV / 0.5 mA (program/readback); 1 mV / 1 mA (meter)

Performance
• Tracking mode accuracy: ±(0.2% output + 20 mV)
• Transient response: <50 µsec recovery to within 15 mV after load change
• Common mode current noise: <1.5 µArms

– Key Features

• Independent 6 V / ±25 V isolated outputs eliminate circuit interference
• Tracking operation enables symmetrical dual-supply configurations for op-amps and analog circuits
• Series connection of ±25 V outputs yields 0–50 V at 1 A single output
• Programmable voltage and current control with digital readback
• Isolation to ±240 Vdc from chassis ground on all outputs

– Typical Applications

Operational amplifier development, analog circuit prototyping, mixed-signal device characterization, educational lab benches, precision instrument calibration.

– Compatibility & Integration

Compact benchtop form factor: 133 mm H × 213 mm W × 348 mm D.