Analog Devices EVAL-AD7766 Preliminary Technical Data

Preliminary Technical Data

FEAURES

Full-featured evaluation board for the:
AD7766
AD7766-1
AD7766-2
AD7767
AD7767-1
AD7767-2
CED compatible
Standalone capability
On-board analog buffering and voltage reference
Various linking options
PC software for control and data analysis when used with the
CED

GENERAL DESCRIPTION

This data sheet describes the evaluation board for the AD7766,
AD7766-1, AD7766-2, AD7767, AD7767-1, AD7767-2, which
are 24-bit, single-channel, oversampled successive-
approximation (SAR) ADCs. These parts operate from 2.5V
power supply, (AVDD1, DVDD), a 1.8V to 5V VDRIVE and
also use a 5V reference (either ADR425, or ADR445).
The AD7766 and AD7767 have a maximum output data rate of
128Khz. The derivatives AD7766-1 and AD7766-2 operate at a
max speed of 64Khz, with the AD7766-2 and the AD7767-2
offering a max speed of 32Khz. The -1, and -2 versions digitally
filter more rigorously, meaning that greater nosie performance
is achieved, trading off on output data rate.
All the AD7767 devices (AD7767, AD7767-1, AD7767-2) offer
18-bit linearity (4ppm). The AD7766 devices (AD7766,
AD7766-1, AD7766-2) provide 16-bit linearity (15ppm).
Full details on the versions of the AD7766 and AD7767 are
available in the AD7356 and the AD7357 data sheets, which are
available from Analog Devices, Inc., and should be consulted in
conjunction with this data sheet when using the evaluation
board.
Rev. PrA
Evaluation boards are only intended for device evaluation and not for production purposes.
Evaluation boards are supplied "as is" and without warranties of any kind, express, implied, or
statutory including, but not limited to, any implied warranty of merchantability or fitness for a
particular purpose. No license is granted by implication or otherwise under any patents or other
intellectual property by application or use of evaluation boards. Information furnished by Analog
Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog
Devicesfor itsuse, nor for any infringements ofpatents or other rights ofthird parties that may result
from its use. Analog Devices reserves the right to change devices or specifications at any time
without notice. Trademarks and registered trademarks are the property of their respective owners.
Evaluation boards are notauthorized tobe used in life support devices or systems.
Evaluation Board for 24-Bit,10mW,
128KHz,24-Bit ADC in 16-pin TSSOP
ON-BOARD COMPONENTS INCLUDE:
ADR425 or ADR445, 5 V ultrahigh precision band gap
reference
Two ADA4841-1 operational amplifiers (run from 7.5V and ­
2.5V supplies).
Various MCLK options
Various link options are explained in the Evaluation Board
Hardware section. Interfacing to this board is through a 96-way
connector. This 96-way connector is compatible with the CED,
which is available from Analog Devices. External connectors are
provided for a number of signals.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
EVAL-AD7766/AD7767
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www.analog.com