Data SheetAD623PIN CONFIGURATION AND FUNCTION DESCRIPTIONSAD623–R1G8+RG–IN 27+VS+IN 36OUTPUT–V4S5REF 001 TOP VIEW(Not to Scale) 00778- Figure 2. AD623 Pin Configuration Table 6. Pin Function Descriptions Pin No.Mnemonic Description 1 −RG Inverting Terminal of External Gain-Setting Resistor, RG. 2 −IN Inverting In-Amp Input. 3 +IN Noninverting In-Amp Input. 4 −VS Negative Supply Terminal. 5 REF In-Amp Output Reference Input. The voltage input establishes the common-mode voltage of the output. 6 OUTPUT In-Amp Output. 7 +VS Positive Supply Terminal. 8 +RG Noninverting Terminal of External Gain Setting Resistor, RG. Rev. F | Page 9 of 26 Document Outline Features Applications General Description Functional Block Diagram Revision History Specifications Single Supply Dual Supplies Specifications Common to Dual and Single Supplies Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Applications Information Basic Connection Gain Selection Reference Terminal Input and Output Offset Voltage Error Input Protection RF Interference Grounding Ground Returns for Input Bias Currents Output Buffering Single-Supply Data Acquisition System Amplifying Signals with Low Common-Mode Voltage Input Differential and Common-Mode Range vs. Supply and Gain Additional Information Evaluation Board General Description Outline Dimensions Ordering Guide