EVALAD7690CB Analog Devices Inc, EVALAD7690CB Datasheet

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EVALAD7690CB

Manufacturer Part Number
EVALAD7690CB
Description
Manufacturer
Analog Devices Inc
Datasheet
1.EVALAD7690CB.pdf (18 pages)

Specifications of EVALAD7690CB

Lead Free Status / Rohs Status
Not Compliant
Preliminary Technical Data
FEATURES
Versatile analog signal conditioning circuitry
On-board reference, crystal oscillator and buffers
16-bit Parallel Buffered Outputs
Ideal for DSP and data acquisition card interfaces
Analog and digital prototyping area for breadbording the
target system
Stand-alone operation or Eval control board compatibility
PC software for control and data analysis
LabVIEW
GENERAL DESCRIPTION
The EVAL-AD768x/AD769x/AD794xCB is an evaluation board
for the AD768x/AD769x/AD794x high resolution ADC (see the
Ordering Guide at the end of this document for a product list).
The AD768x/AD769x/AD794x evaluation board is designed to
demonstrate the ADC's performance and to provide an easy to
understand interface for a variety of system applications. A full
Rev. Pr F
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
1
driver to develop custom application
Evaluation Board AD768x/AD769x/AD794x
Figure 1.
EVAL-AD768x/AD769x/AD794xCB
description of the AD768x/AD769x/AD794x is available in the
Analog Devices AD768x/AD769x/AD794x data sheet and
should be consulted when utilizing this evaluation board.
The EVAL-AD768x/AD769x/AD794xCB is ideal for use with
either Analog Devices EVAL-CONTROL BRD2/BRD3
(EVAL-CONTROL BRDx) to run the Analog devices evaluation
software and to develop a specific application using LabVIEW,
or as a stand-alone evaluation board.
The EVAL-CONTROL BRDx is sold separately from the EVAL-
AD768x/AD769x/AD794xCB, is required to run the evaluation
software, is not required in stand alone mode and can be reused
with many Analog Devices ADCs.
1
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
Labview is a trademark of National Instruments.
© 2006 Analog Devices, Inc. All rights reserved.
www.analog.com

EVALAD7690CB Summary of contents

Page 1

Preliminary Technical Data FEATURES Versatile analog signal conditioning circuitry On-board reference, crystal oscillator and buffers 16-bit Parallel Buffered Outputs Ideal for DSP and data acquisition card interfaces Analog and digital prototyping area for breadbording the target system Stand-alone operation or ...

Page 2

EVAL-AD768x/AD769x/AD794xCB TABLE OF CONTENTS Detailed Description .................................................................... 3 Using the EVAL-AD768x/AD769x/AD794xCB Software ...... 3 Testing Methods ........................................................................... 4 REVISION HISTORY 02/06—PrF Version 05/05—PrE Version Preliminary Technical Data Use as a Standalone Evaluation Board........................................4 Ordering Guide .......................................................................... 18 ESD Caution................................................................................ 18 ...

Page 3

Preliminary Technical Data DETAILED Description The EVAL-AD768x/AD769x/AD794xCB includes ultrahigh precision reference (ADR435), and a signal conditioning circuit with two opamps (ADA4841) and digital logic. The board interfaces with a 96-way connector for the EVAL-CONTROL BRDx and a ...

Page 4

EVAL-AD768x/AD769x/AD794xCB and follow the installation instructions. Developing your own application using LabVIEW You need LabVIEW 7.1 or above to do this. Install the executable first, copy the folder LabVIEW VI and run the ADC vi example.vi Testing Methods Histogram To ...

Page 5

Preliminary Technical Data Table 1. Jumper Description Default position with Jumper the control board Designation ( Factory settings) JP1 AMP+ JP2 AMP- JP3 Unip or Diff (see text) JP4 ADR43X JP5 BUF JP6 − JP7 7 V JP8 ...

Page 6

EVAL-AD768x/AD769x/AD794xCB 8 4 GND 2 2.5/3v +VIN 8 2 GND 4 OVDD VDD REF GND Figure 2. Schematic (Analog section) Rev Page Preliminary Technical Data VDD 8 REF GND ...

Page 7

Preliminary Technical Data EVAL-AD768x/AD769x/AD794xCB Figure 3. Schematic (Digital Section) Rev Page ...

Page 8

EVAL-AD768x/AD769x/AD794xCB 3 6 VDD DOUT 14 SYNC OVDD VDD VDD 8 REF GND REF 1 Figure 4. Schematic (Option Section) Rev Page Preliminary Technical Data GND 15 16 SCK 1 DIN 3 2 GND ...

Page 9

Preliminary Technical Data SD 6 GND GND 5 Figure 5. Schematic (Power Section) Rev Page EVAL-AD768x/AD769x/AD794xCB VDD GND GND 5 ...

Page 10

EVAL-AD768x/AD769x/AD794xCB Figure 6. Top-Side Silk-Screen (Not to Scale). Figure 7. Top-Side (Not to Scale). Rev Page Preliminary Technical Data ...

Page 11

Preliminary Technical Data EVAL-AD768x/AD769x/AD794xCB Figure 8. Ground Layer (Not to Scale). Figure 9. Shield Layer (Not to Scale). Rev Page ...

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EVAL-AD768x/AD769x/AD794xCB Figure 10. Bottom-Side Layer (Not to Scale). Figure 11. Bottom-Side Silk-Screen (Not to Scale). Rev Page Preliminary Technical Data ...

Page 13

Preliminary Technical Data 1) The Run button starts the software. This button must be pressed first. 3) Input configurations are chosen here. The available choices are: Interface Mode, ADC (use help (F1) to see the description of each parameter). This ...

Page 14

EVAL-AD768x/AD769x/AD794xCB These control the choice of chart type and X-units. Chart type selection of Histogram or Time and X-units of hexadecimal or Volts. The results are displayed in this chart. Also, the cursor (yellow) can be dragged ...

Page 15

Preliminary Technical Data These control the chart type choice of Frequency domain or Time domain and X axis units. The results are displayed in this chart. Also, the cursor (yellow) can be dragged desired location where the ...

Page 16

EVAL-AD768x/AD769x/AD794xCB The AC test can also be displayed in the Time Domain as shown below. To view the Time domain output, select Time in this menu. Figure 15. Time-Domain Screen Rev Page Preliminary Technical ...

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Preliminary Technical Data AC test results with decimated averaging are shown here. The SNR indicator also represents the dynamic range when no signal is present. The results are displayed in this chart. Also, the cursor (yellow) can be dragged it ...

Page 18

EVAL-AD768x/AD769x/AD794xCB The term AD768x/AD769x/AD794x is used in this document to represent all the ADCs listed in the ordering guide. ORDERING GUIDE Evaluation Board Model EVAL-AD7683CB EVAL-AD7684CB EVAL-AD7685CB EVAL-AD7686CB EVAL-AD7687CB EVAL-AD7688CB EVAL-AD7690CB EVAL-AD7691CB EVAL-AD7693CB EVAL-AD7694CB EVAL-AD7942CB EVAL-AD7946CB EVAL-CONTROL BRD2 EVAL-CONTROL BRD3 ...