AD1974

Rev. 0 | Page 2 of 24

TABLE OF CONTENTS

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

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

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

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

Revision History ............................................................................... 2

Specifications..................................................................................... 3

Test Conditions............................................................................. 3

Analog Performance Specifications ........................................... 3

Crystal Oscillator Specifications................................................. 4

Digital Input/Output Specifications........................................... 4

Power Supply Specifications........................................................ 5

Digital Filters................................................................................. 5

Timing Specifications .................................................................. 5

Absolute Maximum Ratings............................................................ 7

Thermal Resistance ...................................................................... 7

ESD Caution.................................................................................. 7

Pin Configuration and Function Descriptions............................. 8

Typical Performance Characteristics ........................................... 10

Theory of Operation ...................................................................... 11

Analog-to-Digital Converters (ADCs).................................... 11

Clock Signals............................................................................... 11

Reset and Power-Down ............................................................. 11

Serial Control Port ..................................................................... 12

Power Supply and Voltage Reference....................................... 12

Serial Data Ports—Data Format............................................... 12

TDM Modes................................................................................ 13

Daisy-Chain Mode ..................................................................... 15

Control Registers ............................................................................ 18

PLL and Clock Control Registers............................................. 18

AUXPORT Control Registers ................................................... 19

ADC Control Registers.............................................................. 20

Additional Modes....................................................................... 22

Application Circuits ....................................................................... 23

Outline Dimensions ....................................................................... 24

Ordering Guide............................................................................... 24

REVISION HISTORY

4/07—Revision 0: Initial Version