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AD7191BRUZ-REEL Arkusz danych(PDF) 9 Page - Analog Devices |
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AD7191BRUZ-REEL Arkusz danych(HTML) 9 Page - Analog Devices |
9 / 20 page AD7191 Rev. A | Page 9 of 20 Pin No. Mnemonic Description 20 AVDD Analog Supply Voltage, 3 V to 5.25 V. AVDD is independent of DVDD. Therefore, DVDD can be operated at 3 V with AVDD at 5 V or vice versa. 21 DVDD Digital Supply Voltage, 2.7 V to 5.25 V. DVDD is independent of AVDD. Therefore, AVDD can be operated at 3 V with DVDD at 5 V or vice versa. 22 ODR1 Output Data Rate, Digital Input Pin. This pin is used with ODR2 to select the output data rate. See Table 5. 23 DOUT/RDY Serial Data Output/Data Ready Output. DOUT/RDYserves a dual purpose. It functions as a serial data output pin to access the data conversions from the ADC. In addition, DOUT/RDYoperates as a data ready pin, going low to indicate the completion of a conversion. If the data is not read after the conversion, the pin goes high before the next update occurs. The serial interface is reset each time that a conversion is available. The DOUT/RDY falling edge can be used as an interrupt to a processor, indicating that valid data is available. With an external serial clock, the data can be read using the DOUT/RDY pin. Data is placed on the DOUT/RDY pin on the SCLK falling edge and is valid on the SCLK rising edge. 24 ODR2 Output Data Rate, Digital Input Pin. This pin is used with ODR1 to select the output data rate. See Table 5. |
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