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Line 94: + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + − + + + + + + + + + + + + + + + + + − Use for:+ − *AD5535 DAC+ − **ANODE+ − ***Used for temperature monitoring. Voltage drop across a temperature sensitive diode allows AD7928 to measure internal temperature of AD5535. External resistor on AD5535 CATHODE will help to limit current draw.+ − **REF_IN supply+ − ***Using +3.3V for REF_IN limits the SiPM amplifier bias voltages to a maximum of 165V. If greater variability is needed (up to +200V max), a separate +4V supply can be used for REF_IN, perhaps taken from the +5V rail via a voltage divider.+ − *AD7314 temperature sensor+ − **VDD supply+ − ***indicates ±1°C accuracy+ − ***should make compatible with 3.3V CMOS logic+ − *AD7928 ADC+ − **VDRIVE output driver supply+ − *CP2201 Ethernet+ − **AV+ analog supply+ − **VDD1 digital supply+ − **VDD2 digital supply+ − *FPGA+ − **VCCAUX auxiliary supply − ***Can also operate at +2.5V − **VCCO I/O logic supply − ***Makes it compatible with 3.3V CMOS logic − ***Puts it within acceptable range of voltages for communication with other ICs − *XCF01S EEPROM − **VCCINT internal supply − **VCCO output driver − ***Matches 3.3V I/O on FPGA − **VCCJ JTAG output driver − ***''Are we using this?'' − *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 − === +1.2V supply ===+ − + − Use for:+ − *FPGA+ − **VCCINT internal logic supply+ − + − === +2.5V supply ===+ − + − Use for:+ − *AD7928 ADC+ − **REF_IN reference supply+ − ***Must be accurate to ±1%+ − + − + − + − === +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.
SiPM digital control board power supplies (view source)
Revision as of 14:47, 26 June 2008
, 14:47, 26 June 2008no edit summary
| ±0.25V
| ±0.25V
| 2.7mA max operating
| 2.7mA max operating
| Analog supply
| AVDD can be as low as 2.7V if voltages measured never exceed 2.5V
| AVDD can be as low as 2.7V if voltages measured never exceed 2.5V
|}
|}
| AD7928
| AD7928
| VDRIVE
| VDRIVE
| ??? CMOS logic tolerance
| ±0.3V
| 200uA
| 200uA
| Logic output driver
| Logic output driver
| Digital supply pin
| Digital supply pin
|
|
|-
| XC3S50A
| VCCAUX
| ±0.3V
| Varies
| Auxiliary power supply
| FPGA program greatly affects power requirements
|-
| XC3S50A
| VCCO
| ±0.3V
| Varies
| Auxiliary power supply
| FPGA program greatly affects power requirements
|-
| XCF01S
| VCCINT
| ±0.3V
| 10mA max operating
| Internal supply
|
|-
| XCF01S
| VCCO
| ±0.3V
| 10mA max operating
| Digital output supply
| Serial mode
|-
|-
|}
|}
=== ICs requiring +2.5V ===
{| cellspacing=3 border=1 |
|'''IC Name'''
|'''Pin Name'''
|'''Tolerance'''
|'''Current Requirements'''
|'''Description'''
|'''Notes'''
|-
| AD7928
| REF_IN
| ±1% (±0.025V)
| ±1uA max
| Reference voltage
|
|-
|}
=== +3.3V supply ===
=== ICs requiring +1.2V ===
{| cellspacing=3 border=1 |
|'''IC Name'''
|'''Pin Name'''
|'''Tolerance'''
|'''Current Requirements'''
|'''Description'''
|'''Notes'''
|-
| XC3S50A
| VCCINT
| ±0.06V
| Varies
| Internal logic supply
| FPGA program greatly affects power requirements
|-
|}
== -5V supply ==
{| cellspacing=3 border=1 |
|'''IC Name'''
|'''Pin Name'''
|'''Tolerance'''
|'''Current Requirements'''
|'''Description'''
|'''Notes'''
|-
| AD5535
| V-
| ±0.25V
| 2.5mA typ, 3.5mA max
| Negative amplifier supply
|
|-
|}
== +210V supply ==
{| cellspacing=3 border=1 |
|'''IC Name'''
|'''Pin Name'''
|'''Tolerance'''
|'''Current Requirements'''
|'''Description'''
|'''Notes'''
|-
| AD5535
| VPP
| large
| Depends on SiPM specs
| Supply for SiPM bias voltages
| SiPM bias voltage current requirements are not currently on the wiki. Most likely, this is used more as a reference and less as a power supply.
|-
|}