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AD7150 データシート(PDF) 20 Page - Analog Devices |
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AD7150 データシート(HTML) 20 Page - Analog Devices |
20 / 29 page AD7150 Rev. 0 | Page 19 of 28 CONFIGURATION REGISTER Address Pointer 0x0F 8 Bits, Read/Write, Factory Preset 0x19 Table 12. Configuration Register Bit Map Bit Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Mnemonic ThrFixed ThrMD1 ThrMD0 EnCh1 EnCh2 MD2 MD1 MD0 Default 0 0 0 1 1 0 0 1 Table 13.Configuration Register Bit Descriptions Bit Mnemonic Description 7 ThrFixed ThrFixed = 1 sets the fixed threshold mode. The outputs reflect comparison of data and a fixed (constant) value of the threshold registers. ThrFixed = 0 sets the adaptive threshold mode. The outputs reflect comparison of data to the adaptive thresholds. The adaptive threshold is set dynamically, based on the history of the previous data. These bits set the output comparators mode. Output Active When ThrMD1 ThrMD0 Threshold Mode Adaptive Threshold Mode Fixed Threshold Mode 0 0 Negative data < average – sensitivity Data < Threshold 0 1 Positive data > average + sensitivity Data > Threshold 1 0 In-Window data > average – sensitivity AND data < average + sensitivity ‒ 6 5 ThrMD1 ThrMD0 1 1 Out-Window data < average – sensitivity OR data > average + sensitivity – 4 EnCh1 Enables conversion on Channel 1. 3 EnCh2 Enables conversion on Channel 2. Converter mode of operation setup. MD2 MD1 MD0 Mode Description 0 0 0 Idle Part is fully powered up but performing no conversion. 0 0 1 Continuous Conversion Part is repeatedly performing conversions on the enabled channel(s). If two channels are enabled, the part is sequentially switching between them. 0 1 0 Single Conversion Part performs a single conversion on the enabled channel. If two channels are enabled, the part performs two conversions, one on each channel. After finishing the conversion(s), the part goes to the idle mode. 0 1 1 Power-Down Powers down the on-chip circuits, except the digital interface. 2 1 0 MD2 MD1 MD0 1 X X Reserved Do not use these modes. |
同様の部品番号 - AD7150_17 |
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同様の説明 - AD7150_17 |
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