EVAL-AD7472_15 Datasheet, PDF (1/20 Pages) Analog Devices – Evaluation Board for 10-/12-Bit High Speed, Low Power ADCs

Evaluation Board for 10-/12-Bit
High Speed, Low Power ADCs
EVAL-AD7470/AD7472
FEATURES
Full-featured evaluation board for the AD7470/AD7472
Compatible with the EVAL-CONTROL BRD2
Standalone capability
On-board analog buffering and reference
Optional on-board analog bias-up circuit
Optional on-board burst clock generator circuit
Various linking options
PC software for control and data analysis when used with the
EVAL-CONTROL BRD2
GENERAL DESCRIPTION
This data sheet describes the evaluation board for the AD7470/
AD7472. The AD7470/AD7472 are, respectively, 10-/12-bit,
high speed, low power, successive approximation ADCs that
operate from a single 2.7 V to 5.25 V supply. Full data on the
AD7470/AD7472 is available in the AD7470/AD7472 data sheet
available from Analog Devices, Inc. and should be consulted in
conjunction with this data sheet when using the evaluation board.
On-board components include an AD780 (a pin programmable
+2.5 V or +3 V ultra high precision band gap reference), an
AD797 and an AD711 (op amps used to buffer the bipolar and
unipolar analog input respectively), and an OP07 (op amp used
to buffer the DC bias voltage applied to the optional analog
input bias-up circuit). There are various link options, which are
explained in detail in the Link and Switch Options section.
Interface to this board is via a 96-way connector. This 96-way
connector is compatible with the EVAL-CONTROL BRD2 (also
available from Analog Devices). External sockets are provided
for the CNVST input, CLKIN input, and the VIN inputs.
FUNCTIONAL BLOCK DIAGRAM
UNIPOLAR
AIN
BUFFER
BIPOLAR
AIN _BIAS-UP
BUFFER
V_IN
AD7470/
AD7472
ADC
DATA BUS
CONTROL LINES
REFERENCE
POWER SUPPLY CIRCUIT
REF_IN
Figure 1.
CLOCK
GENERATOR
CIRCUITS
Rev. C
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
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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 not authorized to be used in life support devices or systems.
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