Chapter 4
Power Supplies
The Modular MSOP8 EVM board requires 5 V dc for the analog section. This includes the voltage reference (U2), the reference buffer (U4), and optionally, the ADC installed on the EVM (via JMP1). Supply voltages of 1.8 V to 5 V dc for the digital section are also required. When used in combination with one of the DAP Interface boards, J3 provides connection to the common power bus described in document SLAU104. Table 4 - 1 shows the pin out of J3.
Table 4 - 1. Power Supply Pin Out
Signal | Pin Number | Signal | |
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Unused | 1 | 2 | Unused |
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+5VA | 3 | 4 | Unused |
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DGND | 5 | 6 | AGND |
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+1.8VD | 7 | 8 | +VD1 |
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+3.3VD | 9 | 10 | +5VD |
When power is supplied to J3, JMP3 allows for one of four different dc voltages to be applied to the digital sections of the ADC. See the schematic and PWB silkscreen for details.
Topic |
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4.1 | ADC Power | . . |
4.2 | Stand Alone Operation | . . |
4.3 | Reference Voltage | . . |
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Power Supplies |
