Analog Devices EVAL-AD7492SDZ User Manual
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Analog Devices EVAL-AD7492SDZ User Manual

Analog Devices EVAL-AD7492SDZ User Manual

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One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 •
Evaluation Board for the

FEATURES

Full-featured evaluation board for the
PC control in conjunction with the
Platform (EVAL-SDP-CB1Z)
PC software for control and data analysis (time and
frequency domain)
Standalone capability (when designing boards ensure that
digital lines can be disconnected from everything else on
the board to ensure operation)

EVAL-AD7492SDZ CONTENTS

EVAL-AD7492SDZ
evaluation board
Evaluation software CD for the
9 V mains power supply adapter

ADDITIONAL EQUIPMENT NEEDED

System demonstration platform (EVAL-SDP-CB1Z)
Precision analog signal source
SMB cable
USB cable

EVALUATION BOARD DESCRIPTION

The
EVAL-AD7492SDZ
is a full-featured evaluation board,
designed to allow the user to easily evaluate all features of the
AD7492. The evaluation board can be controlled via the system
demonstration platform (SDP) connector (J1). The SDP board
AVDD
GND
VSS
GND
VDD
VDRIVE
GND
BUFFER
UNIPOLAR
INPUT SIGNAL
AD8597
BIAS UP
BIPOLAR
CIRCUITRY
INPUT SIGNAL
AD8021
EXTERNAL
OFFSET
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
AD7492
12-Bit Parallel ADC
AD7492
System Demonstration
AD7492

FUNCTIONAL BLOCK DIAGRAM

OP AMP
SUPPLIES
VIN
INPUT
ADR431
REF
EVAL-AD7492SDZ
EVAL-AD7492SDZ User Guide
1.25 MSPS, 16 mW Internal REF and CLK,
allows the evaluation board to be controlled via the USB port of
a PC using the
On-board components include the
ultralow noise operational amplifier (single); the
noise, high speed amplifier for 16-bit systems; the
650 kHz/1.3 MHz step-up PWM dc-to-dc switching converter
with 2.0 A current limit; the
200 mA low dropout linear regulator; and the
20 V, 1.4 MHz nonsynchronous step-down switching regulator.
The evaluation board features analog bias-up circuitry. Bipolar
signals are input via the SK3 SMB connector and are biased up
by the on-board bias-up buffer circuit. The biased up signal is
available at the VIN SMB and can be applied to the VIN input
of the
AD7492
Various link options are described in the Evaluation Board
Hardware section. The Parallel Interface section of this user
guide should be consulted when configuring the board for
standalone operation.
Complete specifications for the
AD7492
data sheet, available from Analog Devices, Inc., which
should be consulted in conjunction with this user-guide when
using the
AD7492
DVDD
GND
ON-BOARD
POWER SUPPLIES
AM1185
POWER
SEQUENCER
ADP1613
ADP2301
±5V
SDP5V
ADP3303
ADP1720
+5V
3.3V
AV
DV
VDRIVE
DD
DD
CS
RD
CONVST
BUSY
AD7492
DATA BUS
REFOUT
D0 TO D11
PS/FS
Figure 1.
Rev. 0 | Page 1 of 24
AD7492
evaluation software.
AD8597
ADP3303-5
high accuracy anyCAP™
device by placing the LK10 link in Position A.
AD7492
evaluation board.
+
DC
INPUT
–
JACK
5V
BF527DSP
ADG330X
LEVEL
PARALLEL
PORT
SHIFTERS
AV
DD
SDP BOARD
UG-371
www.analog.com
ultralow distortion,
AD8021
low
ADP1613
ADP2301
1.2 A,
are provided in the

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Summary of Contents for Analog Devices EVAL-AD7492SDZ

  • Page 1: Features

    EVAL-AD7492SDZ is a full-featured evaluation board, AD7492 data sheet, available from Analog Devices, Inc., which designed to allow the user to easily evaluate all features of the should be consulted in conjunction with this user-guide when AD7492. The evaluation board can be controlled via the system...

  • Page 2: Table Of Contents

    Functional Block Diagram .............. 1 Software Operation ..............10 Revision History ................2 User Software Panel Description ..........10 EVAL-AD7492SDZ Quick Start Guide ......... 3 Data Capture/Waveform Tab ............ 11 Recommended Quick Start Guide ..........3 AC Testing—Data Capture/Histogram Tab ......12 Evaluation Board Hardware ............

  • Page 3: Eval-Ad7492Sdz Quick Start Guide

    EVAL-AD7492SDZ User Guide UG-371 EVAL-AD7492SDZ QUICK START GUIDE Connect the 9 V power supply adapter included in the kit RECOMMENDED QUICK START GUIDE to the J2 connecter on the EVAL-AD7492SDZ board. To install the software, do the following: Connect the...

  • Page 4: Evaluation Board Hardware

    UG-371 EVAL-AD7492SDZ User Guide EVALUATION BOARD HARDWARE to operate the part in full sleep mode and partial sleep mode, DEVICE DESCRIPTION where the part wakes up to do a conversion and automatically AD7492 is a 12-bit high speed, low power, successive enters a sleep mode at the end of conversion.

  • Page 5: Power Supplies

    EVAL-AD7492SDZ User Guide UG-371 Table 2. Link Options—Setup Condition Link No. Position Function is set to AV DRIVE The CONVST signal is provided by the EVAL-SDP-CB1Z. The REFOUT pin of the AD7492 is connected to the bias circuitry. The RD signal is provided by the EVAL-SDP-CB1Z.

  • Page 6: Analog Inputs

    UG-371 EVAL-AD7492SDZ User Guide VDD_+5V 130Ω 10µF 0.1µF 22pF AD7492 – 130Ω UNIPOLAR V– AD8597ARZ INPUT SIGNAL LK15 LK10 10µF 0.1µF 51Ω VIN_BIASED VDD_–5V Figure 3. Unipolar Input Buffer Circuitry Figure 4. Bipolar Input Buffer Circuitry ANALOG INPUTS REFERENCE OPTIONS...

  • Page 7: Eval-Ad7492Sdz Basic Hardware Setup

    EVAL-AD7492SDZ User Guide UG-371 EVAL-AD7492SDZ BASIC HARDWARE SETUP Connect this power supply to the J702 connector on the EVAL- AD7492SDZ board. Alternatively, a bench power supply can be AD7492 evaluation board connects to the EVAL-SDP-CB1Z. used to power the EVAL-AD7492SDZ via J700.

  • Page 8: Evaluation Board Software

    UG-371 EVAL-AD7492SDZ User Guide EVALUATION BOARD SOFTWARE SOFTWARE INSTALLATION EVAL-AD7492SDZ evaluation kit includes software on a CD. Click the setup.exe file from the CD to run the installation. The default location for the software is C:\Program Files\Analog Devices\AD7492. Install the evaluation software before connecting the evaluation...

  • Page 9: Launching The Software

    Device Manager of the PC. Right-click My Computer/Manage/System Tools/Device Manager, as shown in Figure 14, to find the Device Manager. Analog Devices System Development Platform (32MB) should appear under ADI Development Tools. This now completes the installation.

  • Page 10: Software Operation

    UG-371 EVAL-AD7492SDZ User Guide Figure 16. Setup Screen SOFTWARE OPERATION When hardware is connected to the USB port, the software automatically detects which generic is connected and displays When the software is launched, the panel opens, and the software in here. Without the hardware, the software can operate in looks for hardware connected to the PC.

  • Page 11: Data Capture/Waveform Tab

    EVAL-AD7492SDZ User Guide UG-371 Sample: to perform a single capture. Within any of the chart panels, the following tools allow user Continuous: to perform a continuous capture from the control of the different chart displays: ADC. Press a second time to stop sampling.

  • Page 12: Ac Testing-Data Capture/Histogram Tab

    UG-371 EVAL-AD7492SDZ User Guide Figure 18. Data Capture/Histogram Tab DC TESTING—DATA CAPTURE/HISTOGRAM TAB AC TESTING—DATA CAPTURE/HISTOGRAM TAB More commonly, the Data Capture/Histogram tab is used for Figure 18 shows the Data Capture/Histogram tab. This tests dc testing. This is where user can test the ADC for the code...

  • Page 13: Ac Testing-Data Capture/Fft Tab

    EVAL-AD7492SDZ User Guide UG-371 Figure 19. Data Capture/FFT Tab Furthermore, if using a low frequency band-pass filter when the AC TESTING—DATA CAPTURE/FFT TAB full-scale input range is more than a few volts peak-to-peak, it is Figure 19 shows the Data Capture/FFT tab This tests the...

  • Page 14: Data Capture/Summary Tab

    UG-371 EVAL-AD7492SDZ User Guide Figure 20. Data Capture/Summary Tab DATA CAPTURE/SUMMARY TAB Figure 20 shows the Data Capture/Summary tab. The Data Capture/Summary tab captures all the display information and provides them in one panel with a synopsis of the information including key performance parameters, such as SNR and THD.

  • Page 15: Save File

    EVAL-AD7492SDZ User Guide UG-371 SAVE FILE LOAD FILE The software can save the current captured data for later analysis In the Choose file to Read. Window, users are prompted to to a .tsv file. In the Choose file to Write. Window, users are load the file (see Figure 22).

  • Page 16: Evaluation Board Schematics And Artwork

    UG-371 EVAL-AD7492SDZ User Guide EVALUATION BOARD SCHEMATICS AND ARTWORK Figure 23. Schematic Page 1 Figure 24. Schematic Page 2 Rev. 0 | Page 16 of 24...
  • Page 17 EVAL-AD7492SDZ User Guide UG-371 Figure 25. Schematic Page 3 Rev. 0 | Page 17 of 24...
  • Page 18 UG-371 EVAL-AD7492SDZ User Guide Figure 26. Schematic Page 4 Figure 27. Schematic Page 5 Rev. 0 | Page 18 of 24...
  • Page 19 EVAL-AD7492SDZ User Guide UG-371 Figure 28. Schematic Page 6 Figure 29. Top Printed Circuit Board (PCB) Silkscreen Rev. 0 | Page 19 of 24...
  • Page 20 UG-371 EVAL-AD7492SDZ User Guide Figure 30. Bottom PCB Silkscreen Figure 31. Layer 1 Component Side View Rev. 0 | Page 20 of 24...
  • Page 21 EVAL-AD7492SDZ User Guide UG-371 Figure 32. Layer 2 Component Side View Figure 33. Layer 3 Component Side View Rev. 0 | Page 21 of 24...
  • Page 22 UG-371 EVAL-AD7492SDZ User Guide Figure 34. Layer 4 Component Side View Rev. 0 | Page 22 of 24...
  • Page 23 EVAL-AD7492SDZ User Guide UG-371 NOTES Rev. 0 | Page 23 of 24...
  • Page 24 By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you have read and agreed to the Agreement.

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