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AD7687 Scheda tecnica(PDF) 7 Page - Analog Devices |
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AD7687 Scheda tecnica(HTML) 7 Page - Analog Devices |
7 / 16 page AD7684 Rev. A | Page 7 of 16 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS REF 1 +IN 2 –IN 3 GND 4 VDD 8 DCLOCK 7 DOUT 6 CS 5 AD7684 TOP VIEW (Not to Scale) Figure 6. 8-Lead MSOP Pin Configuration Table 7. Pin Function Descriptions Pin No. Mnemonic Type1 Description 1 REF AI Reference Input Voltage. The REF range is from 0.5 V to VDD. This pin is referred to the GND pin and should be decoupled closely to the GND pin with a ceramic capacitor of a few μF. 2 +IN AI Differential Positive Analog Input. Referenced to −IN. The input range for +IN is between 0 V and VREF, centered about VREF/2 and must be driven 180° out of phase with −IN. 3 –IN AI Differential Negative Analog Input. Referenced to +IN. The input range for −IN is between VREF and 0 V, centered about VREF/2 and must be driven 180° out of phase with +IN. 4 GND P Power Supply Ground. 5 CS DI Chip Select Input. On its falling edge, it initiates the conversions. The part returns to shutdown mode as soon as the conversion is complete. It also enables DOUT. When high, DOUT is high impedance. 6 DOUT DO Serial Data Output. The conversion result is output on this pin. It is synchronized to DCLOCK. 7 DCLOCK DI Serial Data Clock Input. 8 VDD P Power Supply. 1 AI = analog input, DI = digital input, DO = digital output, and P = power. |
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