EVAL-AD7841EBZ Analog Devices Inc, EVAL-AD7841EBZ Datasheet

EVAL-AD7841EBZ

Manufacturer Part Number

EVAL-AD7841EBZ

Description

Evaluation Board I.c.

Manufacturer

Analog Devices Inc

Datasheets

1.AD7841ASZ-REEL.pdf (13 pages)

2.EVAL-AD7839EBZ.pdf (6 pages)

Specifications of EVAL-AD7841EBZ

Number Of Dac's

Number Of Bits

Outputs And Type

8, Single Ended

Sampling Rate (per Second)

32k

Data Interface

Parallel

Settling Time

31µs

Dac Type

Voltage

Voltage Supply Source

Analog and Digital, Dual ±

Operating Temperature

-40°C ~ 85°C

Utilized Ic / Part

AD7841

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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FEATURES

Full Featured Evaluation Board

On Board Reference and Buffers

Various Link Options

Direct Hook up to Printer Port of IC

PC Software for control of DACs

REV. PrA Dec ‘03

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

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

INTRODUCTION

This Technical Note describes the evaluation board for

the AD7839/41, 8 channel 13/14 bit DACs.

The AD7839/41 contains eight 13/14-bit DACs on one

monolithic chip.It has output voltages with a full-scale

range of +/-10 V from reference voltages of +/-5 V.

The AD7839/41 accepts 13/14-bit parallel loaded data

from the external bus into one of the input registers under

the control of the WR ,CS ,and DAC channel address

pins, A0 –A2. The DAC outputs are updated on reception

of new data into the DAC registers. All the outputs may

be updated simultaneously by taking the LDAC input

low.

Each DAC output is buffered with a gain-of-two amplifier

into which an external DAC offset voltage can be inserted

via the DUTGNDx pins.

OPERATING THE AD7839/41 EVALUATION BOARD

Power Supplies

The following external supplies must be provided: + 5V

between the V

of the AD7839/41. V

+/-15V respectively. Note that

sufficient headroom for the output voltage range.

Both AGND and DGND inputs are provided on the

board. The AGND and DGND planes are connected at

one location close to the DAC. It is recommended not to

connect AGND and DGND elsewhere in the system to

avoid ground loop problems.

Each supply is decoupled to the relevant ground plane

with 10 F and 0.1 F capacitors. Each device supply pin is

again decoupled with a 10 F and 0.1 F capacitor pair to

the relevant ground plane.

Preliminary Technical Data

and DGND inputs for the digital supply

and V

PRELIMINARY TECHNICAL DATA

should be supplied with

and Vss must provide

Evaluation Board for AD7839/AD7841, 8-Channel,

13/14-Bit, Parallel input, Voltage-Output DACs

One Technology Way, P .O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

Fax: 781/326-8703

LINK OPTIONS

There are a number of link options on the evaluation

board which should be set for the required operating setup

before using the board. The functions of these link options

are described in detail below. This board accomodates

both the AD7839 and the AD7841 DACs, both pinouts

are similar, the exceptions are taken care of using link

options as described below.

Link No.

LK1

LK2

LK3

LK4

EVAL-AD7839/EVAL-AD7841

Function

Position A : Connects AD7841 CLR/ pin to

CLR/ input Position B : Connects AD7839

Vss pin to Vss supply.

Allows the on board reference to be discon

nected should the user wish to drive the ref

erence input through the SMB input.

For bipolar output range, LK3 should be

connected to position A, for unipolar output

range, connect to position B.

DUTGND may be driven to the DUT volt

age level +/-2V max/min.

World Wide Web Site: http://www.analog.com

Analog Devices, Inc., 2003

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EVAL-AD7841EBZ Summary of contents

Page 1

... Evaluation Board for AD7839/AD7841, 8-Channel, 13/14-Bit, Parallel input, Voltage-Output DACs LINK OPTIONS There are a number of link options on the evaluation board which should be set for the required operating setup before using the board. The functions of these link options are described in detail below. This board accomodates ...

Page 2

... CD-ROM. Software is compatible with Win95 to Win- dows2000. Ensure that the Centronics cable connects the PC to the AD7839/41 eval board. Run the executable file from the Analog Devices Menu. The main screen with drop down menus (File, Printer Port and Help) looks as ...

Page 3

... Bit Parallel Input Voltage Output DAC Octal D-Type Transparent Latch Octal D-Type Transparent Latch Octal D-Type Transparent Latch 5V Reference 5V Reference Precision, Low Loise, Single OP Amp –3– EVAL-AD7839/EVAL-AD7841 Stock Code FEC 432-210 FEC 197-130 FEC 432-210 FEC 355-2512 FEC 432-210 FEC 355-2512 ...

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EVAL-AD7841EBZ Analog Devices Inc, EVAL-AD7841EBZ Datasheet

EVAL-AD7841EBZ

Specifications of EVAL-AD7841EBZ

Related parts for EVAL-AD7841EBZ

EVAL-AD7841EBZ Summary of contents

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