link to page 4 link to page 6 link to page 6 link to page 6 link to page 7 link to page 9 link to page 10 link to page 10 link to page 11 link to page 12 link to page 12 link to page 13 link to page 13 link to page 13 link to page 13 link to page 14 link to page 15 link to page 16 link to page 17 link to page 18 link to page 19 link to page 23 link to page 23 link to page 24 link to page 25 link to page 26 link to page 27 AD652TABLE OF CONTENTS Specifications... 3 Component Selection .. 12 Absolute Maximum Ratings.. 5 Digital Ground.. 13 ESD Caution.. 5 Single-Supply Operation ... 14 Definitions of Specifications ... 5 Frequency-to-Voltage Converter ... 15 Theory of Operation .. 6 Decoupling and Grounding.. 16 Overrange .. 8 Frequency Output Multiplier.. 17 SVFC Connection for Dual Supply, Positive Input Voltages .. 9 Single-Line Multiplexed Data Transmission .. 18 SVFC Connections for Negative Input Voltages .. 9 Isolated Front End.. 22 SVFC Connection for Bipolar Input Voltages .. 10 A-to-D Conversion .. 22 PLCC Connections... 11 Delta Modulator ... 23 Gain and Offset Calibration.. 11 Bridge Transducer Interface.. 24 Gain Performance .. 12 Outline Dimensions ... 25 Reference Noise .. 12 Ordering Guide... 26 Digital Interfacing Considerations... 12 REVISION HISTORY5/04—Data Sheet Changed from Rev. B to Rev. C Updated Format..Universal Changes to Gain and Offset Calibration section.. 11 Updated Outline Dimensions ... 25 Changes to Ordering Guide .. 26 2/00—Data Sheet Changed from Rev. A to Rev. B Rev. C | Page 2 of 28 Document Outline FEATURES PRODUCT DESCRIPTION PRODUCT HIGHLIGHTS FUNCTIONAL BLOCK DIAGRAM SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION DEFINITIONS OF SPECIFICATIONS THEORY OF OPERATION OVERRANGE SVFC CONNECTION FOR DUAL SUPPLY, POSITIVE INPUT VOLTAGES SVFC CONNECTIONS FOR NEGATIVE INPUT VOLTAGES SVFC CONNECTION FOR BIPOLAR INPUT VOLTAGES PLCC CONNECTIONS GAIN AND OFFSET CALIBRATION GAIN PERFORMANCE REFERENCE NOISE DIGITAL INTERFACING CONSIDERATIONS COMPONENT SELECTION DIGITAL GROUND SINGLE-SUPPLY OPERATION FREQUENCY-TO-VOLTAGE CONVERTER DECOUPLING AND GROUNDING FREQUENCY OUTPUT MULTIPLIER SINGLE-LINE MULTIPLEXED DATA TRANSMISSION Multiplexer Transmitter SVFC Demultiplexer Analog Signal Reconstruction ISOLATED FRONT END A-TO-D CONVERSION DELTA MODULATOR BRIDGE TRANSDUCER INTERFACE OUTLINE DIMENSIONS ORDERING GUIDE