CSUA Ultra Low Noise Current Supply

CSUA is the lowest noise commercially available curent source, using a modern version of the Libbrect-Hall current supply. The current source is suitable to drive magnetic field coils to generate very low noise magnetic fields. CSUA also has soft start, output clamp, and analog servo features necessary for operating DFB and DBR lasers in applications where narrow spectral lines are necessary. The current source is available in rackable enclosures or as a compact module and with fixed output current so that it may be easily integrated into your system.

CSUA-100

• Current range: 0–140  mA
• Current noise density: 55 pA/Hz^1/2
• Current drift: <3 ppm/°C
• Compliance voltage: 5 V

CSUA-500

• Current range: 0–600 mA
• Current noise density: <100 pA/Hz^1/2
• Current drift: 3 ppm/°C
• Compliance voltage: 5 V

CSUA-1000

• Current range: 0–1000 mA
• Current noise density: <100 pA/Hz^1/2
• Current drift: 3 ppm/°C
• Compliance voltage: 5 V

Interface:

• Current output: SMA
  • Soft start
  • Output is clamped on power loss
• Current adjustment: 10 turn potentiometer
  • Fixed output available
• Modulation input
  • Modulation bandwidth: 10 MHz
• Analog servo input: SMB
  • Modulation conversion: 1 mA/V
  • Modulation input range: ±10 V
• Current monitor: SMB
  • Monitor calibration: 1 V/A
• AC power: Specify 120 V or 240 V
• Module power: ±15 V, LEMO 4 pin 0B connector
  1. Ground
  2. +15 V
  3. –15 V
  4. Shield

Performance

Ordering

• CSUA-100-AC[-240V], Ultralow noise unipolar current supply, +100 mA. $2450.
• CSUA-500-AC[-240V], Ultralow noise unipolar current supply, +500 mA. $2450.
• CSUA-1000-AC[-240V], Ultralow noise unipolar current supply, +1000 mA. $2450.