AD7761BSTZ datasheet(3/76 Pages) AD

3 / 76 page

AD7761

Data Sheet

Rev. A | Page 2 of 75

TABLE OF CONTENTS

Features .............................................................................................. 1

Applications....................................................................................... 1

Functional Block Diagram .............................................................. 1

Revision History ............................................................................... 3

General Description......................................................................... 4

Specifications..................................................................................... 5

Timing Specifications ................................................................ 10

1.8 V IOVDD Timing Specifications....................................... 11

Absolute Maximum Ratings.......................................................... 15

Thermal Resistance .................................................................... 15

ESD Caution................................................................................ 15

Pin Configuration and Function Descriptions........................... 16

Typical Performance Characteristics ........................................... 20

Terminology .................................................................................... 26

Theory of Operation ...................................................................... 27

Clocking, Sampling Tree, and Power Scaling............................. 27

Noise Performance and Resolution.......................................... 28

Applications Information .............................................................. 30

Power Supplies ............................................................................ 31

Device Configuration ................................................................ 32

Pin Control Mode....................................................................... 32

SPI Control.................................................................................. 35

SPI Control Functionality ......................................................... 36

SPI Control Mode Extra Diagnostic Features ........................ 38

Circuit Information........................................................................ 39

Core Signal Chain....................................................................... 39

Analog Inputs.............................................................................. 40

VCM............................................................................................. 41

Reference Input........................................................................... 42

Clock Selection ........................................................................... 42

Digital Filtering........................................................................... 42

Decimation Rate Control .......................................................... 46

Antialiasing ................................................................................. 46

Calibration................................................................................... 48

Data Interface.................................................................................. 49

Setting the Format of Data Output .......................................... 49

ADC Conversion Output: Header and Data .......................... 50

Functionality ................................................................................... 59

GPIO Functionality.................................................................... 59

Channel Standby Register ......................................................... 62

Channel Mode A Register......................................................... 63

Channel Mode B Register ......................................................... 63

Channel Mode Select Register.................................................. 64

Power Mode Select Register...................................................... 64

General Device Configuration Register.................................. 65

Data Control: Soft Reset, Sync, and Single-Shot Control

Interface Configuration Register.............................................. 66

Digital Filter RAM Built in Self Test (BIST) Register............ 67

Status Register............................................................................. 67

Revision Identification Register ............................................... 68

GPIO Control Register .............................................................. 68

GPIO Write Data Register......................................................... 69

GPIO Read Data Register.......................................................... 69

Analog Input Precharge Buffer Enable Register Channel 0 to

Channel 3 .................................................................................... 69

Analog Input Precharge Buffer Enable Register Channel 4 to

Channel 7 .................................................................................... 70

Positive Reference Precharge Buffer Enable Register............ 70

Negative Reference Precharge Buffer Enable Register .......... 71

Offset Registers........................................................................... 71

Gain Registers............................................................................. 72

Sync Phase Offset Registers ...................................................... 72

ADC Diagnostic Receive Select Register ................................ 72

ADC Diagnostic Control Register ........................................... 73

Modulator Delay Control Register........................................... 74

Chopping Control Register....................................................... 74

Outline Dimensions....................................................................... 75

Ordering Guide .......................................................................... 75

AD7761BSTZ Datasheet(PDF) 3 Page - Analog Devices

AD7761BSTZ Datasheet(HTML) 3 Page - Analog Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76

Datasheet Download

Link URL