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Contents

1

EVM Overview

............................................................................................................... 3

2

Analog Interface

............................................................................................................. 3

3

Digital Interface

.............................................................................................................. 4

4

Power Supplies

.............................................................................................................. 5

5

Voltage Reference

.......................................................................................................... 6

6

Clock Source

................................................................................................................ 6

7

EVM Operation

.............................................................................................................. 7

8

ADS1248EVM-PDK Kit Operation

........................................................................................ 8

9

Evaluating Performance with the ADCPro Software

.................................................................. 17

10

Schematics and Layout

................................................................................................... 29

List of Figures

1

Reference Select Switch S1

............................................................................................... 6

2

Jumper J2

.................................................................................................................... 7

3

ADS1248EVM Default Jumper Locations

................................................................................ 8

4

Virtual COM Port Installer

.................................................................................................. 9

5

Virtual COM Port Setup

.................................................................................................... 9

6

MMB3 Switch Locations

.................................................................................................. 10

7

Connecting ADS1248EVM to MMB3

................................................................................... 11

8

MMB3 Block Diagram

..................................................................................................... 12

9

ADCPro Software Start-up Display Window

........................................................................... 13

10

ADS1248EVM-PDK Plug-In Display Window

.......................................................................... 14

11

Connection Timeout

....................................................................................................... 15

12

Firmware Download Message Box

...................................................................................... 15

13

Firmware Download Progress Indicator

................................................................................ 16

14

Firmware Download Complete Message Box

......................................................................... 17

15

ADS1248 Multiplexer

...................................................................................................... 18

16

I/O Config Tab

............................................................................................................. 19

17

Enabling VBIAS on a Channel

........................................................................................... 20

18

GPIO Tab

................................................................................................................... 21

19

GPIO Set to Output Mode

................................................................................................ 22

20

GPIO Output Set to High

................................................................................................. 23

21

Power

& Ref Tab

.......................................................................................................... 24

22

Cal Tab

..................................................................................................................... 26

23

About Tab

.................................................................................................................. 27

24

Progress Bar While Collecting Data

.................................................................................... 28

List of Tables

1

J8/J4: Analog Interface Pinout

............................................................................................ 4

2

J7: Serial Interface Pins

.................................................................................................... 4

3

J11 Configuration: Power-Supply Input

.................................................................................. 5

4

J10 Configuration: Power Options

........................................................................................ 5

5

REF1 Reference Voltage Options

........................................................................................ 6

6

List of Switches

.............................................................................................................. 8

7

ADS1148EVM/ADS1248EVM Bill of Materials

....................................................................... 29

2

ADS1148EVM, ADS1248EVM, ADS1148EVM-PDK, and ADS1248EVM-PDK

SBAU142B

– April 2009 – Revised May 2011

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