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參數(shù)資料
| 型號： | AD8320ARP |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 通信及網(wǎng)絡 |
| 英文描述： | Serial Digital Controlled Variable Gain Line Driver |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PDSO20 |
| 封裝： | SOIC-20 |
| 文件頁數(shù)： | 15/20頁 |
| 文件大?。?/td> | 583K |
| 代理商： | AD8320ARP |
AD8320
–15–
REV. 0
Figure 52. Evaluation Board Silkscreen (Component Side)
T he control software requires Windows 3.1 or later to operate.
T o install the software, insert the disk labeled “Disk # 1 of 2” in
the PC and run the file called SET UP.EX E. Additional installa-
tion instructions will be given on-screen. Before beginning installa-
tion, it is important to close any other Windows applications
that are running.
When you launch the installed control software from Windows,
you will be asked to select the printer port you are using. Most
modern PCs have only one printer port, usually called LPT 1.
However, some laptop computers use the PRN port.
Figure 56 shows the main screen of the control software. Using
the slider, you can set any gain in the AD8320’s 36 dB range.
T he gain is displayed on-screen in dB and V/V. T he 8-bit gain
setting byte is also displayed, in binary, hexadecimal and decimal.
Each time the slider is moved, the software automatically sends
and latches the required 8-bit data stream to the AD8320. You
can power down or reset the device simply by clicking the
appropriate buttons. T he software also offers one volatile stor-
age location that can be used to store a particular gain. T his
functions in the same way as the memory on a pocket calculator.
Overshoot on PC Printer Ports’ Data Lines
T he data lines on some printer ports have excessive overshoot.
Overshoot on the pin used as the serial clock (Pin 6 on the D-
Sub-25 connector) can cause communication problems. T his
overshoot can be eliminated by applying mild filtering to the
CLK line on the evaluation board. T his can be done by putting
a small series resistor on the CL K line, combined with a
capacitor to ground. Pads are provided (C9, R4) on the com-
ponent side of the evaluation board to allow easy insertion of
these devices. Determining the size of these values will take
some experimentation. Depending upon the overshoot from the
printer port, this capacitor may need to be as large as 0.01
μ
F,
while the resistor is typically in the 50
to 100
range.
相關PDF資料 |
PDF描述 |
|---|---|
| AD8320 | Serial Digital Controlled Variable Gain Amplifier(串行數(shù)字驅(qū)動可變增益放大器) |
| AD8321 | Gain Programmable CATV Line Driver(可編程增益CATV線驅(qū)動器) |
| AD8324 | 3.3 V Upstream Cable Line Driver |
| AD8324ACP | 3.3 V Upstream Cable Line Driver |
| AD8324ACP-EVAL | 3.3 V Upstream Cable Line Driver |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AD8320ARP-REEL | 制造商:Analog Devices 功能描述:SP Amp Line Driver Amp Single 12V 20-Pin PSOP-II T/R |
| AD8320ARPZ | 制造商:Analog Devices 功能描述:SP Amp Line Driver Amp Single 12V 20-Pin PSOP-II Tube |
| AD8320-EB | 制造商:Analog Devices 功能描述: |
| AD8321 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Gain Programmablea CATV Line Driver |
| AD8321_05 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Gain Programmablea CATV Line Driver |
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