Datasheet AD7191 (Analog Devices) - 3

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AD7191 TABLE OF CONTENTS
Features .. 1 Gain .. 15 Interface ... 1 Analog Input Channels .. 15 Applications ... 1 Temperature Sensor ... 16 General Description ... 1 Power-Down (PDOWN) ... 16 Functional Block Diagram .. 1 Clock .. 16 Revision History ... 2 Bipolar Configuration .. 16 Specifications ... 3 Data Output Coding .. 16 Timing Characteristics .. 6 Bridge Power-Down Switch .. 16 Timing Diagram ... 6 Reference ... 16 Absolute Maximum Ratings .. 7 Digital Interface .. 17 ESD Caution .. 7 Grounding and Layout .. 17 Pin Configuration and Function Descriptions ... 8 Applications Information .. 19 Typical Performance Characteristics ... 10 Weigh Scales .. 19 RMS Noise and Resolution Specifications .. 13 EMI Recommendations ... 19 ADC Circuit Information .. 14 Outline Dimensions ... 20 Overview .. 14 Ordering Guide .. 20 Filter, Data Rate, and Settling Time ... 14
REVISION HISTORY 5/09—Rev. 0 to Rev A
Changes to Gain Error Specification, Normal Mode Rejection Specification... 3 Changes to Table 3 .. 7
5/09—Revision 0: Initial Version
Rev. A | Page 2 of 20 Document Outline FEATURES INTERFACE APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING CHARACTERISTICS TIMING DIAGRAM ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS RMS NOISE AND RESOLUTION SPECIFICATIONS ADC CIRCUIT INFORMATION OVERVIEW FILTER, DATA RATE, AND SETTLING TIME GAIN ANALOG INPUT CHANNELS TEMPERATURE SENSOR POWER-DOWN (PDOWN) CLOCK BIPOLAR CONFIGURATION DATA OUTPUT CODING BRIDGE POWER-DOWN SWITCH REFERENCE DIGITAL INTERFACE GROUNDING AND LAYOUT APPLICATIONS INFORMATION WEIGH SCALES EMI RECOMMENDATIONS OUTLINE DIMENSIONS ORDERING GUIDE