Datasheet AD7684 (Analog Devices) - 8

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AD7684 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS REF 1 8 VDD +IN 2 7 DCLOCK AD7684 –IN 3 TOP VIEW 6 DOUT (Not to Scale) GND 4 5 CS
04302-006 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. Rev. A | Page 7 of 16 Document Outline FEATURES APPLICATIONS APPLICATION DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS Timing Diagrams ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TERMINOLOGY TYPICAL PERFORMANCE CHARACTERISTICS APPLICATION INFORMATION CIRCUIT INFORMATION CONVERTER OPERATION TRANSFER FUNCTIONS TYPICAL CONNECTION DIAGRAM ANALOG INPUTS DRIVER AMPLIFIER CHOICE VOLTAGE REFERENCE INPUT POWER SUPPLY DIGITAL INTERFACE LAYOUT EVALUATING THE PERFORMANCE OF THE AD7684 OUTLINE DIMENSIONS ORDERING GUIDE