AD4695/AD4696
Data Sheet
TABLE OF CONTENTS
Features.............................................................................................. 1
Busy Indicator............................................................................. 36
Channel Sequencing Modes ..................................................... 36
Digital Interface.............................................................................. 41
Register Configuration Mode................................................... 41
Conversion Mode....................................................................... 48
Autocycle Mode ......................................................................... 54
General-Purpose Pin ................................................................. 56
Device Reset................................................................................ 56
Applications Information ............................................................. 60
Analog Front-End Design......................................................... 61
Analog Input Overvoltage Protection..................................... 64
Reference Circuitry Design....................................................... 65
Reference Circuit Design for Driving REF Input.................. 65
Converting Between Codes and Volts .................................... 67
Oversampling for Noise Reduction......................................... 67
Digital Interface Operation....................................................... 67
Device Configuration Recommendations .............................. 74
Effective Channel Sample Rate ................................................ 75
Layout Guidelines ...................................................................... 77
Evaluating AD4695/AD4696 Performance............................ 77
Register Information...................................................................... 78
Register Overview ...................................................................... 78
Register Details........................................................................... 79
Outline Dimensions....................................................................... 96
Ordering Guide .......................................................................... 96
Applications ...................................................................................... 1
General Description......................................................................... 1
Revision History ............................................................................... 2
Functional Block Diagram .............................................................. 3
Specifications .................................................................................... 4
Timing Specifications .................................................................. 8
Absolute Maximum Ratings ......................................................... 10
Thermal Resistance.................................................................... 10
Electrostatic Discharge (ESD) Ratings.................................... 10
ESD Caution................................................................................ 10
Pin Configuration and Function Descriptions .......................... 11
Typical Performance Characteristics........................................... 13
Terminology.................................................................................... 23
Theory of Operation ...................................................................... 24
Overview...................................................................................... 24
Converter Operation.................................................................. 24
Transfer Function ...................................................................... 26
Analog Inputs ............................................................................. 27
Input Overvoltage Protection Clamps .................................... 31
Temperature Sensor................................................................... 32
Voltage Reference Input............................................................ 32
Power Supplies............................................................................ 32
Oversampling and Decimation ................................................ 33
Offset and Gain Correction ...................................................... 34
Threshold Detection and Alert Indicators ............................. 34
REVISION HISTORY
12/2020—Revision 0: Initial Version
Rev. 0 | Page 2 of 96
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