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EVAL-AD7175-8SDZ User Guide 

UG-901 

One

 Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com 

 

Evaluating the 

AD7175-8

 24-Bit, 250 kSPS, Sigma-Delta ADC with 

20 µs Settling and Integrated Analog Input Buffers 

 

 
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT  
WARNING AND LEGAL TERMS AND CONDITIONS.

 

Rev. 0 | Page 1 of 10 

FEATURES 

Full featured evaluation board for th

AD7175-8

 

PC control in conjunction with the Analog Devices, Inc.,  

SDP-B board (

EVAL-SDP-CB1Z

 

PC software for control and data analysis (time domain)  
Standalone capability 

EVALUATION KIT CONTENTS  

EVAL-AD7175-8SDZ

 evaluation board  

Evaluation software CD  
7 V to 9 V ac-to-dc adapter 

ADDITIONAL EQUIPMENT NEEDED 

DC signal source 

 
 
 
 
 

GENERAL DESCRIPTION 

The 

EVAL-AD7175-8SDZ

 evaluation board features the 

AD7175-8

, a 24-bit, 250 kSPS analog-to-digital converter 

(ADC) with integrated analog input buffers, on-board power 
supply regulation, and an external amplifier section for 
amplifier evaluation. A 7 V to 9 V ac-to-dc adapter is regulated 
to 5 V and 3.3 V; this supplies th

AD7175-8

 and support 

components. The evaluation board connects to a USB port via 
the SDP-B system demonstration platform controller board 
(

EVAL-SDP-CB1Z

). 

The 

AD7175-8

 evaluation software fully configures the 

AD7175-8

 device functionality via a user accessible register 

interface and provides dc time domain analysis in the form of 
waveform graphs, histograms, and associated noise analysis for 
ADC performance evaluation. 
Full specifications on th

AD7175-8

 are available in the product 

data sheet, which should be consulted in conjunction with this 
user guide when working with the evaluation board. Full details 
for the SDP-B controller board are available on the Analog 
Devices website. 

 

FUNCTIONAL BLOCK DIAGRAM 

POWER

ADSP-BF527

L

ED

LED

USB

ON-BOARD

NOISE TEST

7V TO 9V

VIN

CS

SCLK

DIN

DOUT/RDY

ADP7104

5V LDO

ADP1720

5V LDO

ADP1720

3.3V LDO

ADR445

5V VREF

TO AD7175-8
REFOUT PIN

SDP-B

AIN0/REF2–

AIN1/REF2+

AIN15

AIN16

AVSS

CROSSPOINT
MULTIPLEXER

AVDD

Σ-Δ ADC

TEMP

SENSOR

AVSS

PDSW

SERIAL

INTERFACE

AND

CONTROL

SYNC

ERROR

INPUT/OUTPUT

CONTROL

GPIO0 GPIO1

AVDD1

AVDD2

1.8V
LDO

REGCAPA

IOVDD

1.8V
LDO

REGCAPD

DGND

BUFFERED
PRECISION

REFERENCE

REF+

REF–

REFERENCE

INPUT

BUFFERS

ANALOG

INPUT

BUFFERS

REFOUT

XTAL1 XTAL2/CLKIO

XTAL AND INTERNA L

CLOCK OSCILLATOR

CIRCUITRY

AD7175-8

INT

REF

DIGITAL

FILTER

GPO2

GPO3

STATUS

13767-

001

 

Figure 1

EVAL-AD7175-8SDZ

 Block Diagram 

Summary of Contents for EVAL-AD7175-8SDZ

Page 1: ... on the information therein All referenced brands product names service names and trademarks are the property of their respective owners 00000005981LF 000 EOS Power Buy Now We have 45 000 LP502030 PCM NTC LD A02554 EEMB Lithium Battery Rectangular 3 7V 250mAh Rechargeable in stock now Starting at 0 034 This EEMB part is fully warrantied and traceable 1 855 837 4225 Give us a call International 1 5...

Page 2: ...board connects to a USB port via the SDP B system demonstration platform controller board EVAL SDP CB1Z The AD7175 8 evaluation software fully configures the AD7175 8 device functionality via a user accessible register interface and provides dc time domain analysis in the form of waveform graphs histograms and associated noise analysis for ADC performance evaluation Full specifications on the AD71...

Page 3: ...oise Test 3 Evaluation Board Hardware 4 Device Description 4 Hardware Link Options 4 Sockets and Connectors 5 Serial Interface 5 Power Supplies 5 Power Supply Configurations 6 Analog Inputs 6 Reference Options 6 Evaluation Board Software 7 Software Installation 7 Launching the Software 7 Software Operation 8 Overview of the Main Window 8 Control Toolbar 8 Data Section 9 Analysis Section 9 Status 9...

Page 4: ... B board to the PC via the USB cable For Windows XP you may need to search for the SDP drivers Choose to automatically search for the drivers for the SDP B board if prompted by the operating system 6 From the Analog Devices subfolder in the Programs menu launch the AD7175 8 software QUICK START NOISE TEST Use the following procedure to quickly test the noise performance 1 Insert Link LK5 to Link L...

Page 5: ... the following Position A AIN1 REF2 pin on the AD7175 8 Position B Buffer U6 Position C U7 for use with a single ended to differential driver circuit Position D J15 7 SL2 A Routes A2 to one of the following Position A AIN2 pin on the AD7175 8 Position B Buffer U10 Position C U9 for use with a single ended to differential driver circuit SL3 A Routes A3 to one of the following Position A AIN3 pin on...

Page 6: ...t MC 1 5 6 G 3 81 FEC3704762 J15 Optional header 7 way 2 54 mm pin header Samtec SSW 107 01 T S FEC1803478 J16 Optional header 7 way 2 54 mm socket Samtec TLW 107 05 G S FEC1668499 1 Order codes starting with FEC are for Farnell SERIAL INTERFACE The EVAL AD7175 8SDZ evaluation board connects to the Blackfin ADSP BF527 on the SDP B controller board via the serial peripheral interface SPI There are ...

Page 7: ...ed in Table 1 Split Supply Regulated To set up the board use the following procedure 1 Remove SL12 to SL15 These links connect AVSS to AGND 2 Connect a bench top power supply to J3 and set LK2 to Position A Make sure that AVSS 2 5 V in this case 3 Set LK1 to Position B This sets the input to the power monitor circuitry to work with the lower AVDD1 supply of 2 5 V Set all other links and solder lin...

Page 8: ...ers Installation Confirmation Dialog Box After installation is complete connect the EVAL AD7175 8SDZ evaluation board to the EVAL SDP CB1Z SDP B board as shown in Figure 2 Connect the SDP B board via the USB cable to the computer Take the following steps to verify that the SDP B controller board driver is installed and working correctly 1 Allow the Found New Hardware Wizard to run 2 After the driv...

Page 9: ...in the graphs of the DATA and ANALYSIS sections of the main window The Samples numeric control is the number of samples gathered per batch Sampling Sampling set to Capture in Figure 7 enacts the sampling mode used by the software This is unrelated to the ADC mode The user can capture a defined sample set or continuously gather batches of samples In both cases the number of samples set in the Sampl...

Page 10: ...inputs for that channel labeled next to the on and off controls These controls only affect the display of the channels and do not have any effect on the channel settings in the ADC register map Latest Data These indicators show the value of the last sample gathered on the corresponding channel see Channel Selection ANALYSIS SECTION Analysis Histogram and Analysis Channel The histogram shows the an...

Page 11: ...ny other party for any reason Upon discontinuation of use of the Evaluation Board or termination of this Agreement Customer agrees to promptly return the Evaluation Board to ADI ADDITIONAL RESTRICTIONS Customer may not disassemble decompile or reverse engineer chips on the Evaluation Board Customer shall inform ADI of any occurred damages or any modifications or alterations it makes to the Evaluat...

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