Precision current to voltage amplifier, for use with TRAP detectors.

Product family key features

High precision current to voltage amplifier

These amplifiers include a microprocessor for remoted set up and control. They use thermally stable, precision resistors to provide highly accurate conversion of current to voltage.

Manual or remote control

They provide six gain ranges from 10 KΩ to 1 GΩ. These ranges can be selected manually or by remote control using the USB interface and our software. They can also be selected manually using the rotary switch.

Power supply options

  • SDX-1153 preamp is power over the USB 2.0 and requires +5V at 500 mA.
  • SDX-1226-1 and -2 require use of an external DC power supply. 

Detector compatibility

Related products

Controller and GUI specifications

  • Analog output

    BNC, ± 10 V
  • External trigger

  • Serial commands via

  • External power supply

    External DC power jack
  • Voltage zero

    ± 10 V
  • -3dB bandwidth

    > 100 Hz
  • Current zeroing

    ± 2% of setting

Power meter specifications

  • Power range

    ± 10 μA
  • Digital resolution

    19 pA
  • Device accuracy

  • Thermal drift

    < 10 ppm/°C

Energy meter specifications

The following specs are based on the accuracy of the internal gain resistors, operating from 18°F to 82°F and at a relative humidity 80% or less. 

Power range Accuracy Temperature coefficient
10 kΩ 0.01% 5 ppm
100 kΩ 0.01% 5 ppm
1 MΩ 0.01% 5 ppm
10 MΩ 0.01% 5 ppm
100 MΩ 0.025% 10 ppm
1 GΩ 0.50% 25 ppm

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