ADUCM350 datasheet(3/41 Pages) AD

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ADuCM350

Data Sheet

Rev. A | Page 2 of 40

TABLE OF CONTENTS

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

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

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

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

General Description......................................................................... 3

Specifications..................................................................................... 4

Analog Front-End Specifications ............................................... 4

Switch Matrix Specifications....................................................... 5

Transimpedance Amplifier Specifications ................................ 6

ADC Specifications ...................................................................... 6

Temperature Sensor Specifications ............................................ 6

CapTouch....................................................................................... 6

DFT-Based Impedance Measurements ..................................... 7

Digital Platform ............................................................................ 7

System Clocks/Timers ............................................................... 10

Power Management Specifications .......................................... 12

Trickle Charger ........................................................................... 12

Timing Characteristics .............................................................. 13

Absolute Maximum Ratings.......................................................... 19

Thermal Resistance .................................................................... 19

ESD Caution................................................................................ 19

Pin Configuration and Function Descriptions........................... 20

Typical Performance Characteristics ........................................... 25

Analog Front End........................................................................... 30

Excitation Stage .......................................................................... 30

Measurement Stage .................................................................... 32

AFE Control................................................................................ 33

CapTouch Features..................................................................... 33

MicroSubSystem............................................................................. 34

Memories..................................................................................... 34

Debug Capability........................................................................ 34

Programmable GPIOs ............................................................... 34

Timers.......................................................................................... 34

USB............................................................................................... 34

Power Management and Clocking........................................... 35

Display Options.......................................................................... 35

Audio Options ............................................................................ 36

Development Support.................................................................... 37

Documentation........................................................................... 37

Hardware ..................................................................................... 37

Software ....................................................................................... 37

Packaging and Ordering Information ......................................... 38

Outline Dimensions................................................................... 38

Ordering Guide .......................................................................... 38

REVISION HISTORY

5/14—Revision A: Initial Version

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