AD7293 datasheet(2/79 Pages) AD

2 / 79 page

AD7293

Data Sheet

Rev. D | Page 2 of 79

TABLE OF CONTENTS

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

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

General Description......................................................................... 1

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

Product Highlights ........................................................................... 1

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

Functional Block Diagrams............................................................. 4

Specifications..................................................................................... 6

ADC ............................................................................................... 6

DAC................................................................................................ 7

Temperature Sensor ..................................................................... 8

Current Sensor.............................................................................. 9

Closed-Loop Specifications......................................................... 9

General......................................................................................... 10

Timing Characteristics .............................................................. 11

Absolute Maximum Ratings.......................................................... 13

Thermal Resistance .................................................................... 13

ESD Caution................................................................................ 13

Pin Configuration and Function Descriptions........................... 14

Typical Performance Characteristics ........................................... 17

Theory of Operation ...................................................................... 22

Analog-to-Digital Converter (ADC) Overview..................... 22

ADC Transfer Functions ........................................................... 22

Analog Inputs.............................................................................. 23

Current Sensor............................................................................ 23

Temperature Sensor ................................................................... 24

Internal Channel Monitoring ................................................... 25

DAC Operation........................................................................... 25

Reference ..................................................................................... 27

VDRIVE Feature.............................................................................. 27

Open-Loop Mode....................................................................... 27

Closed-Loop Mode .................................................................... 27

Digital Input/Output Registers................................................. 29

Load DAC (LDAC Pin).............................................................. 29

Alerts and Limits ........................................................................ 29

AVDD and AVSS Alarm................................................................ 31

Maximum and Minimum Pages............................................... 31

Hysteresis..................................................................................... 31

Registers Common to All Pages............................................... 33

Result 0/DAC Input (Page 0x00).............................................. 34

Result 1 (Page 0x01)................................................................... 36

Configuration (Page 0x02)........................................................ 37

Sequence (Page 0x03) ................................................................ 46

High Limit 0 (Page 0x04) .......................................................... 48

High Limit 1 (Page 0x05) .......................................................... 49

Low Limit 0 (Page 0x06)............................................................ 50

Low Limit 1 (Page 0x07)............................................................ 51

Hysteresis 0 (Page 0x08)............................................................ 52

Hysteresis 1 (Page 0x09)............................................................ 53

Minimum 0 (Page 0x0A)........................................................... 54

Minimum 1 (Page 0x0B) ........................................................... 55

Maximum 0 (Page 0x0C) .......................................................... 56

Maximum 1 (Page 0x0D) .......................................................... 57

Offset 0 (Page 0x0E)................................................................... 58

Offset 1 (Page 0x0F)................................................................... 60

Alert (Page 0x10)........................................................................ 61

ALERT0 Pin Routing (Page 0x11) ........................................... 63

ALERT1 Pin Routing (Page 0x12) ........................................... 67

Serial Port Interface........................................................................ 71

Interface Protocol....................................................................... 71

Modes of Opertion..................................................................... 72

Applications Information .............................................................. 76

Base Station Power Amplifier Control .................................... 76

Depletion Mode Amplifier Biasing and Protection............... 77

Loop Component Selection ...................................................... 78

Outline Dimensions....................................................................... 79

Ordering Guide .......................................................................... 79

AD7293 Datasheet(PDF) 2 Page - Analog Devices

AD7293 Datasheet(HTML) 2 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 77 78 79

Datasheet Download

Link URL