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AD9237 датащи(PDF) 22 Page - Analog Devices

номер детали AD9237
подробное описание детали  12-Bit, 20 MSPS/40 MSPS/65 MSPS 3 V Low Power A/D Converter
PDF  28 Pages
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
Logo AD - Analog Devices

AD9237 датащи(HTML) 22 Page - Analog Devices

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AD9237
Rev. 0 | Page 22 of 28
LFCSP EVALUATION BOARD
The typical bench setup used to evaluate the ac performance of
the AD9237 is shown in Figure 47. The AD9237 can be driven
single-ended or differentially through a transformer. Separate
power pins are provided to isolate the DUT from the support
circuitry. Each input configuration can be selected by proper
connection of various jumpers (refer to the schematics).
An alternative differential analog input path using an
AD8351 op amp is included in the layout but is not populated
in production. Designers interested in evaluating the op amp
with the ADC should remove C15, R12, and R3 and populate
the op amp circuit. The passive network between the AD8351
outputs and the AD9237 allows the user to optimize the
frequency response of the op amp for the application.
DATA
CAPTURE
AND
PROCESSING
3V
–
+
2.5V
–
+
2.5V
–
+
5V
–
+
REFIN
10MHz
REFOUT
HP8644, 2V p-p
SIGNAL SYNTHESIZER
HP8644, 2V p-p
CLOCK SYNTHESIZER
BAND-PASS
FILTER
J1
ANALOG
IN
J2
ENCODE
AVDD
DRVDD
GND
GND VDL
VAMP
AD9237
EVALUATION BOARD
P12
CLOCK
DIVIDER
Figure 47. LFCSP Evaluation Board Connections



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