High Voltage Bias Supplies

The Model 520 Series are low noise power supplies designed for photodetector biasing applications. Output voltages up to 800V are available in two polarities. The compact size and shielded metal case make the Model 520 Series attractive for a variety of low noise biasing applications. The 523/524 versions are compact, hermetically sealed, designed for very low noise and ideal for military APD biasing applications.

Data Sheets (PDF Format) are available for models listed below.

ModelInput VoltageOutput VoltageOutput PowerOutput Current 50%,
100% V out
521A-1+12 to +15VDC+10 to +300VDC210mW1.6/0.7mA
521A-10+24 to +28VDC+10 to +800VDC120mW750/150µA
521A-11+12 to +15VDC-10 to -800VDC120mW750/150µA
521A-12+24 to +28VDC-10 to -800VDC120mW750/150µA
521A-2+24 to +28VDC+10 to +300VDC210mW1.6/0.7mA
521A-3+12 to +15VDC-10 to -300VDC210mW1.6/0.7mA
521A-4+24 to +28VDC-10 to -300VDC210mW1.6/0.7mA
521A-5+12 to +15VDC+10 to +600VDC120mW1.0/0.2mA
521A-6+24 to +28VDC+10 to +600VDC120mW1.0/0.2mA
521A-7+12 to +15VDC-10 to -600VDC120mW1.0/0.2mA
521A-8+24 to +28VDC-10 to -600VDC120mW1.0/0.2mA
521A-9+12 to +15VDC+10 to +800VDC120mW750/150µA
522-1+5VDC ±10%-20 to -250VDC150mW600µA
522-2+5VDC ±10%-200 to -500VDC150mW300µA
522-3+5VDC ±10%+20 to +250VDC150mW600µA
522-4+5VDC ±10%+200 to +500VDC150mW300µA
523-1+5VDC ±5%+20 to +100VDC100mW1.0mA max.
523-2+5VDC ±5%+100 to +300VDC150mW0.15mA max.
523-3+5VDC ±5%+300 to +500VDC250mW0.125mA max

Specifications subject to change without notice.

Model 521A Application Note

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