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Line 1: − + − Use for: − *AD5535 DAC − **VPP high voltage supply − ***Using this high voltage will allow for large adjustments of the SiPM amplifier bias voltages. Large variations may be necessary because the MATLAB model showed that adjustments between 0 and +50V had [[SiPM_Amplifier#Bias_voltage |no effect]] on the SiPM. − − === +5V supply === − Use for:[[Image:AD5535 Power Supply Diagram.gif|thumb|Suggested AD5535 power supply connections taken from AD5535 data sheet.]] − *AD5535 DAC − **V+ amplifier supply pins − **AVCC analog supply pins − **DVCC digital supply pins − *AD7928 ADC − **AVDD pins − ***indicates measuring range of 0 to 2xREF_IN voltage − === -5V supply === − + − + Line 48:
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SiPM digital control board power supplies (view source)
Revision as of 18:45, 25 June 2008
, 18:45, 25 June 2008rearranged voltages in increasing order, added +1.2V section
As seen in the [[SiPM digital control board netlist]], the ICs on the control board have many different power requirements. This page suggests some compatible voltage supplies that will be necessary on the board. To reduce the number of backplane connections and the number of external supplies needed, some of these supplies might be created using voltage dividers on the control board.
As seen in the [[SiPM digital control board netlist]], the ICs on the control board have many different power requirements. This page suggests some compatible voltage supplies that will be necessary on the board. To reduce the number of backplane connections and the number of external supplies needed, some of these supplies might be created using voltage dividers on the control board.
=== +210V supply ===
=== +1.2V supply ===
Use for:
Use for:
*AD5535 DAC
*FPGA
**V- amplifier supply pins
**VCCINT internal logic supply
=== +3.3V supply ===
=== +3.3V supply ===
**VCCJ JTAG output driver
**VCCJ JTAG output driver
***''Are we using this?''
***''Are we using this?''
=== +5V supply ===
Use for:[[Image:AD5535 Power Supply Diagram.gif|thumb|Suggested AD5535 power supply connections taken from AD5535 data sheet.]]
*AD5535 DAC
**V+ amplifier supply pins
**AVCC analog supply pins
**DVCC digital supply pins
*AD7928 ADC
**AVDD pins
***indicates measuring range of 0 to 2xREF_IN voltage
=== -5V supply ===
Use for:
*AD5535 DAC
**V- amplifier supply pins
=== +210V supply ===
Use for:
*AD5535 DAC
**VPP high voltage supply
***Using this high voltage will allow for large adjustments of the SiPM amplifier bias voltages. Large variations may be necessary because the MATLAB model showed that adjustments between 0 and +50V had [[SiPM_Amplifier#Bias_voltage |no effect]] on the SiPM.
=== +2.5V supply ===
=== +2.5V supply ===
Currently it appears that a +2.5V supply is not necessary. While some components could use a +2.5V supply, running them at +3.3V is also acceptable. This may increase power consumption somewhat, but eliminates the extra traces and other components needed to create a +2.5V supply.
Currently it appears that a +2.5V supply is not necessary. While some components could use a +2.5V supply, running them at +3.3V is also acceptable. This may increase power consumption somewhat, but eliminates the extra traces and other components needed to create a +2.5V supply.