Aos Products

 

High Voltage PSU for Avalanche Photodiode

 

FEATURES

  • 10 bit voltage setting resolution

  • Simple SPI interface for voltage setting and voltage monitoring

  • On-board 3.3 volt logic PSU

  • Buffered monitor and setting levels

  • Manual voltage setting via jumper selectable standard potentiometer

  • Designed to be used in conjunction with the AOS Technology Ltd PIN photodiode board

 

APPLICATIONS

This OEM PCB was designed to allow a number of standard EMCO CA series high voltage power supplies to be controlled via a simple SPI interface.  An additional SPI channel in conjunction to an ADC chip allows the PSU monitor to be interrogated. Ideal when used in conjunction with our PIN receiver board for fluorescence detection and other high sensitivity work.

 

DESCRIPTION

Initially designed to allow a simple SPI based interface to control the output of a EMCO CA series high voltage power supply this circuit can be used to control most (with simple modifications) high voltage supplies used in APD biasing.  Designed to work in conjunction with our PIN photo-receiver circuit to provide a simple high sensitivity optical receiver the board contains suitable signal buffering and a separate logic power supply in order to act as a self contained OEM module. The high voltage output is provided via a BNC output connector.

 

BASIC SPECIFICATION

Parameter

Symbol

Rating

Unit

Operating Voltage range

Vss 4.75 to 5.25 V

Programming  Voltage

Vprog 0 to 2.048 V

Voltage Monitor

Vmon 0 to 2.048 V

Linearity

  0.5 %

 

EMCO CA-series HV PSU

PC1 Schematic layout

 

For information about our HV PSU interface please contact us

 

         AOS Technology Ltd, 14 Pate Road, Melton Mowbray, Leicestershire, LE13 0RG, UK    T: 01664 567711