Differences
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| resources:eval:ad9650-105ebz_ad9268-125ebz_ad9269-80ebz_ad9648-125ebz [05 Jan 2024 13:25] – [Default Operation and Jumper Selection Settings] Janadrian Alipio | resources:eval:ad9650-105ebz_ad9268-125ebz_ad9269-80ebz_ad9648-125ebz [08 Jan 2024 02:07] (current) – [Power Supplies] Janadrian Alipio | ||
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| *This enables the user to bias each section of the board individually. | *This enables the user to bias each section of the board individually. | ||
| *Use P102 and P103 to connect a different supply for each section. | *Use P102 and P103 to connect a different supply for each section. | ||
| - | *A 1.8 V supply is needed with 1A current capability for DUT_AVDD and DRVDD; however, it is recommended that separate supplies be used for both analog and digital domains. | + | *A 1.8 V supply is needed with 1A current capability for **DUT_AVDD** and **DRVDD**; however, it is recommended that separate supplies be used for both analog and digital domains. |
| - | *An additional supply is also required to supply 1.8 V for digital support circuitry on the board, DVDD. This should also have a 1 A current capability and can be combined with DRVDD with little or no degradation in performance. | + | *An additional supply is also required to supply 1.8 V for digital support circuitry on the board, |
| - | *To operate the evaluation board using the SPI and alternate clock options, a separate 3.3 V analog supply is needed in addition to the other supplies. This 3.3 V supply, or 3V_CLK, should have a 1 A current capability. | + | *To operate the evaluation board using the SPI and alternate clock options, a separate 3.3 V analog supply is needed in addition to the other supplies. This 3.3 V supply, or **3V_CLK**, should have a 1 A current capability. |
| - | *Two additional supplies, 5V_AMPVDD and 3V_AMPVDD, are used to bias the optional input path amplifiers and optional VREF buffer. If used, these supplies should each have 1 A current capability. | + | *Two additional supplies, |
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| + | A second optional power supply configuration allows replacing the LDOs that supply the AVDD and DRVDD rails of the ADC with the dual switching power supply [[adi> | ||
| + | * Install R120 and R122 to enable the ADP2114. Also, R107, R109, R110, R111, C108, C109, R108, R118, C110, C111, C112, C113, R116, R117, C137, C140, L101, L102, E116, E117, R124, R125, R126, R127, JP102, JP104, E104, E106, and E108. | ||
| + | * Remove JP101, JP103, E103, E105 and E107. | ||
| - | A second optional power supply configuration allows replacing the LDOs that supply the AVDD and DRVDD rails of the ADC with the dual switching power supply [[adi> | ||
| - | * Install R120 and R122 to enable the ADP2114. | ||
| - | * Install R107 and R109. | ||
| - | * Install R110, R111, C108 and C109. | ||
| - | * Install R108, R118, C110, C111, C112 and C113. | ||
| - | * Install R116, R117, C137 and C140 | ||
| - | * Install L101, L102, E116 and E117. | ||
| - | * Install R124, R125, R126 and R127. | ||
| - | * Remove JP101 and JP103 and install JP102 and JP104. | ||
| - | * Remove E103, E105 and E107 and install E104, E106, and E108. | ||
| Making these changes enables the switching converter to power the ADC. Using the switching converters as the ADC power source is more efficient than using the default LDOs. | Making these changes enables the switching converter to power the ADC. Using the switching converters as the ADC power source is more efficient than using the default LDOs. | ||
| </ | </ | ||
resources/eval/ad9650-105ebz_ad9268-125ebz_ad9269-80ebz_ad9648-125ebz.txt · Last modified: 08 Jan 2024 02:07 by Janadrian Alipio