SPS20 Cagire Low-Noise AC/DC Power Supply

Features

3U – 100mm x 160mm
Occupied width: 10HP (50.8mm)
230V or 115V AC input
Chassis isolated output
DC output: 4 options
- +5V/2.2A
- +12V/2.2A
- +15V/2.2A
- +24V/1A
Low EMI : toroidal transformer & linear control
High reliability:
- Current limiter
- Overvoltage crowbar protection
- Inrush current limiter
- Thermal shutdown.
Low voltage noise
- Density ≤ 100 nV/√Hz
- Ripple ≤ 1mV RMS
Connection: 2 options
- DIN41612 H15
- PCB terminal blocks (Cage Clamp™)
3D models available

SPS20 Cagire modules w/ DIN41612-H15 (right) or Cage clamp terminal blocks (left). Front panel not shown.

Applications

Low-noise DC power supply
Laser frequency stabilization
Opto-electronic oscillator
OPLL – Phase-locked lasers
Ultra-low noise current controller
Laser diode controller
RF noise sensitive prototyping

Overview

The SPS20 Cagire is a low-noise power supply based on a linear AC/DC converter. It was first designed to provide a quiet environment to operate our ultra-low noise laser current source (SMC-Series). For this purpose, three SPS20 modules are assembled in a 3U desktop case (SR100 Estélas) to power up to 2 complete
laser diode controllers and their dedicated laser frequency control electronics (SMA– and SMB-Series).
Because they have little to no ability to reject supply variations, many RF subsystems should also benefit from the low-noise features of the SPS20-Series to prevent unwanted side bands and low signal-to-noise ratio.

The SPS20 Cagire’s output is protected against short-circuit using an adjustable current limiter. An overvoltage crowbar is also added on the output to provide ultimate protection of the loads. The SPS20 Cagire can be remotely controlled (on/off) using its dedicated isolated input. For more information refer to the functional block diagram.