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AD7322 датащи(PDF) 25 Page - Analog Devices |
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AD7322 датащи(HTML) 25 Page - Analog Devices |
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25 / 37 page ![]() AD7322 Data Sheet Rev. B | Page 24 of 36 RANGE REGISTER The range register is used to select one analog input range per analog input channel. This register is a 6-bit, write-only register with two dedicated range bits for each of the analog input channels, Channel 0 and Channel 1. There are four analog input ranges, ±10 V, ±5 V, ±2.5 V, and 0 V to +10 V. A write to the range register is selected by setting the write bit to 1 and the register select bit to 1. After the initial write to the range register occurs, each time an analog input is selected, the AD7322 automatically configures the analog input to the appropriate range, as indicated by the range register. The ±10 V input range is selected by default on each analog input channel (see Table 13). MSB LSB 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 Write Zero Register Select VIN0A VIN0B 0 0 VIN1A VIN1B 0 0 0 0 0 0 0 Table 13. Range Selection VINxA VINxB Description 0 0 This combination selects the ±10 V input range on VINx. 0 1 This combination selects the ±5 V input range on VINx. 1 0 This combination selects the ±2.5 V input range on VINx. 1 1 This combination selects the 0 V to +10 V input range on VINx. |
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