Developed for both semiconductor and digital superconductor electronics, the Multi-Channel Programmable Current Source is computer-controlled and features 48 low-noise current source outputs. Each source output has the capability to both set and read back currents and can be set to a zero-current high Z mute state.
Each of the 48 sources are optically coupled for control and are sourced from their own secondary winding for complete galvanic isolation. The device consumes a maximum of only 80 W and handles a maximum load current of 4.8 A total overall outputs. Operating over a range of 0-100 mA on each channel, the device features accuracy of +/-25 μA. The mute state can be set thru a rear panel interlock or from the front panel button for maximum circuit protection. The unit can be mounted in a standard-sized rack.
Features
- 48 channels—all are completely independent and floating
- Computer-controlled
- Source code available for integrating the current source functionality into test software systems
- Low noise
- Designed for semiconductor and digital superconductor circuits
- Unconditionally stable load impedance
- Greater than 1 MΩ output resistance
- Maximum circuit protection
Applications
- Current source for digital superconductor circuits
- Current source for semiconductor circuits
- Low-noise circuits
- Low-level signal instrumentation
- Automation and control for current input devices (relays, BJT)
Source Code/Current Source Set-up
Source code/device setup can be delivered using a USB stick or pre-loaded using a computer over the USB port.
Accessories Available
Test leads, rack-mount brake-out panel for BNC connections
Construction
- 19″ wide, 4″ high, 22″ deep (standard rack size)
- 20 lbs
- Power supply: 100-240 V, 50-60 Hz
- Power consumption: 80 W (maximum)
- Output power: 19.2 W
- Hardwire interlock on rear panel
- RoHS compliant
Specifications/ Performance
| Accuracy | +/-25 μA |
| Programming Resolution | 50 μA (step size) |
| Noise | 0.5 μA |
| Settling Time | 1 mSec |
| Output Current | 100 mA maximum |
| Program Response Time | Approximately 50 uSec per point |
| Stability | Unconditionally stable |
| Programming Input | USB (version 1.1 or 2.0) |
| Output Resistance | >1 MΩ |
| Output Capacitance | < 400 pF |
| Load Impedance | Unconditionally stable |
| Voltage Limit (Compliance) | 4.5 V |
| Maximum Load Current | 4.8 A |
| DUT Resistance | 40 Ω @ 100 mA |
| Common Mode Voltage | Floating (+/-20 V) |
| Floating Source | Can be used in source or sink application |
| Output Connections | Deutsch or DSUB 50 |