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参数资料
| 型号： | EVAL-AD7274CBZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 9/16页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR AD7274 |
| 标准包装： | 1 |
| ADC 的数量： | 1 |
| 位数： | 12 |
| 采样率（每秒）： | 3M |
| 数据接口： | 串行 |
| 输入范围： | 0 ~ 3.6 V |
| 在以下条件下的电源（标准）： | 11.4mW @ 3 V |
| 工作温度： | -40°C ~ 125°C |
| 已用 IC / 零件： | AD7274 |
| 已供物品： | 板，CD |
EVAL-AD7273/AD7274
CONTROL
BUTTONS
DIGITAL
STORAGE
OSCILLOSCOPE
(DSO)
WAVEFORM DISPLAY
DIGITAL
STORAGE
OSCILLOSCOPE
(DSO)
FFT DISPLAY
Figure 4. AD7273/AD7274 Main Window
Digital Storage Oscilloscope
The middle section of the screen is a digital storage oscilloscope
(DSO) that allows you to display a waveform, a histogram or a
fast Fourier transform (FFT). When samples are uploaded from
the EVAL-CONTROL-BRD2, they are displayed here. The
samples can be displayed either as integer values or as voltages.
At the bottom left corner of the graph are the zoom options.
These allow you to zoom in and out to get a closer look at a
sample, if required. The right-hand side of the middle section
contains information about the samples taken, for example,
minimum/maximum position or velocity, the spread, the
standard deviation, and the mean.
Fast Fourier Transform or Histogram
The lower section of the window is also a digital storage
oscilloscope (DSO) that allows you to display a waveform, a
histogram, or an FFT. The FFT (the default option) is typically
used for examining the ADC’s performance in the frequency
domain while the histogram gives an indication of the ADC’s
be changed by clicking on the Waveform , Histogram , and FFT
buttons. The right-hand side of the lower section contains
information about the samples taken, for example, ac
specifications. Figure 4 shows a screen shot of the main window.
TAKING SAMPLES
When you click the Sample button, the software instructs the
EVAL-CONTROL-BRD2 to take the required number of
samples at the required frequency from the evaluation board.
The samples taken are then uploaded and displayed. An FFT
and histogram are also calculated and displayed. If you click the
Continuous button , the software repeats the process indefi-
nitely until you click the Stop button (the Continuous button
switches to Stop when clicked).
EVAL-AD7273/AD7274 SCHEMATIC, SILKSCREEN,
AND LAYOUT
These can be found in Figure 5, Figure 6, Figure 7, Figure 8 , and
performance in response to dc inputs. The option displayed can
Rev. 0 | Page 9 of 16
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