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參數資料
| 型號： | AD7899 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Evaluation Board for 5V, 12-Bit, Serial 220kSPS ADC in 8-Pin Package |
| 中文描述： | 評估板為5V，12位，串行220kSPS ADC的8引腳封裝 |
| 文件頁數： | 6/12頁 |
| 文件大小： | 484K |
| 代理商： | AD7899 |
EVAL-AD7899CB
–6–
REV. 0
Figure 2. AD7899 Main Screen
SOF T W A R E D E SC R IP T ION
T he software which controls the Evaluation Board Control-
ler and hence the evaluation board has three main screens.
T he screen shown in Figure 1 shows the screen which appears
when the software is run. T he main function of this screen is
to allow the user to read a predetermined number of samples
from the evaluation board and display them in both the time
and frequency domain. T he screen can be divided into 3
sections. T he upper third of the screen contains the control
buttons, the menu bar and various status windows. T he
control buttons allow the user to enter the setup menu, take
samples and get information about the software. T he menu
bar allows the user to select which printer port is to be used
to control the Evaluation Board Controller, load and save
data etc. T he status windows indicate the setup of the
evaluation board/device, number of samples taken and any
information/error
messages
T he middle third of the screen is a D igital Storage
Oscilloscope (DSO). When samples are uploaded from the
Evaluation Board Controller they are displayed here. T he
samples can be displayed either as integer values or as
voltages (determined by the input range of the device in
question). Once samples have been displayed clicking at any
that
are
generated.
point in the graph will display the sample number and value
of the point directly beneath the cursor. Along the axis of the
graph are the "zoom handles". T hese allow the user to zoom
in and out to get a closer look at a particular sample if
required. When another set of samples is taken the graph will
attempt to display all values collected unless the
Hold Zoom
check box is ticked. In this case the graph will keep the same
axis settings as for the previous set of data samples. Addi-
tional check boxes are provided to give the user control over
the vertical and horizontal grids and data points.
T he lower third of the screen will show either a Fast
Fourier T ransform (FFT ) of the data or a Histogram which
shows the number of occurrances of each particular code read
back. T he FFT (the default option) is typically used when the
user is concerned with examining an ADC's performance in
the frequency domain while the Histogram will give an
indication of the ADC 's performance to DC signals. T he
option displayed can be toggled by clicking on the FFT
Mode/Histogram Mode button in the top right of the screen.
Figure 3 shows how the main screen looks when the Histo-
gram Option is selected.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD7899AR-1 | 功能描述:IC ADC 14BIT 400KSPS 5V 28-SOIC RoHS:否 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1,000 系列:- 位數:12 采樣率（每秒）:300k 數據接口:并聯 轉換器數目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數目和類型:1 個單端，單極；1 個單端，雙極 |
| AD7899AR-1REEL | 制造商:Analog Devices 功能描述:ADC Single SAR 400ksps 14-bit Parallel 28-Pin SOIC W T/R |
| AD7899AR-1REEL7 | 制造商:Analog Devices 功能描述:ADC SGL SAR 400KSPS 14BIT PARALLEL 28SOIC W - Tape and Reel |
| AD7899AR-2 | 功能描述:IC ADC 14BIT 400KSPS 5V 28-SOIC RoHS:否 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 位數:12 采樣率（每秒）:3M 數據接口:- 轉換器數目:- 功率耗散（最大）:- 電壓電源:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應商設備封裝:SOT-23-6 包裝:帶卷 (TR) 輸入數目和類型:- |
| AD7899AR-2REEL | 制造商:Analog Devices 功能描述:ADC Single SAR 400ksps 14-bit Parallel 28-Pin SOIC W T/R |
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