Datasheet AD7694 (Analog Devices) - 8

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Data Sheet AD7694 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS REF 1 8 VDD IN+ AD7694 2 7 SCK TOP VIEW IN– 3 6 SDO (Not to Scale) GND 4 5 CNV
05003-004 Figure 4. 8-Lead MSOP Pin Configuration
Table 7. Pin Function Descriptions Pin No. Mnemonic Type1 Function
1 REF AI Reference Input Voltage. The REF range is from 1 V to VDD. It is referred to the GND pin. This pin should be decoupled closely to the pin with a ceramic capacitor of a few µF. 2 IN+ AI Analog Input. It is referred to in IN−. The voltage range, that is, the difference between IN+ and IN−, which is 0 V to VREF. 3 IN− AI Analog Input Ground Sense. To be connected to the analog ground plane or to a remote sense ground. 4 GND P Power Supply Ground. 5 CNV DI Convert Input. On its leading edge, it initiates the conversions. It enables the SDO pin when low. 6 SDO DO Serial Data Output. The conversion result is output on this pin. It is synchronized to SCK. 7 SCK DI Serial Data Clock Input. When CNV is low, the conversion result is shifted out by this clock. 8 VDD P Power Supply. 1AI = analog input; DI = digital input; DO = digital output; and P = power. Rev. B | Page 7 of 16 Document Outline Features Applications General Description Application Diagram Table of Contents Revision History Specifications Timing Specifications 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 Input Driver Amplifier Choice Voltage Reference Input Power Supply Supplying the ADC from the Reference Digital Interface Layout Evaluating the AD7694 Performance Outline Dimensions Ordering Guide