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
Model 521A+12 to +15 VDC
+24 to +28 VDC
10 to 300 VDC210 mW1.6/0.7 mA
10 to 600 VDC120 mW1.0/0.2 mA
10 to 800 VDC120 mW750/150 µA
Model 522+5 VDC ±10%-20 to -250 VDC150 mW2 mA/600 µA
Model 523-1-A+5 VDC ±5%+20 to +100 VDC100 mW1.0 mA max.
Model 524-1+5 VDC ±5%+100 to +300 VDC150 mW0.15 mA max.
Model 524-2+5 VDC ±5%+300 to +500 VDC250 mW0.125 mA max

Specifications subject to change without notice.

Model 521A Application Note

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