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參數(shù)資料
| 型號： | ADM489ARU |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | PHOTODIODE, 0.05A, 1.3V; Area, active:7.5mm2; Case style:SOT-23; Sensitivity:0.6A/W @ 950nm; Wavelength, peak:940nm RoHS Compliant: Yes |
| 中文描述： | LINE TRANSCEIVER, PDSO16 |
| 封裝： | MO-153AB, TSSOP-16 |
| 文件頁數(shù)： | 10/12頁 |
| 文件大小： | 212K |
| 代理商： | ADM489ARU |
ADM488/ADM489
–10–
REV. 0
T he ADM488/ADM489 comfortably meets Classification 1 at
the most stringent (Level 3) requirement. In fact, field strengths
up to 30 V/m showed no performance degradation and error-
free data transmission continued even during irradiation.
T able IV.
Level
V/m
Field Strength
1
2
3
1
3
10
E MI E MISSIONS
T he ADM488/ADM489 contains internal slew rate limiting in
order to minimize the level of electromagnetic interference
generated. Figure 22 shows an FFT plot when transmitting a
150 kHz data stream.
10
0%
100
90
10dB/DIV
500kHz/DIV
0
5MHz
Figure 22. Driver Output Waveform and FFT Plot Trans-
mitting @ 150 kHz
As may be seen, the slew limiting attenuates the high frequency
components. EMI is therefore reduced, as are reflections due to
improperly terminated cables.
EN55022, CISPR22 defines the permitted limits of radiated
and conducted interference from Information T echnology
Equipment (IT E).
T he objective is to control the level of emissions, both con-
ducted and radiated.
For ease of measurement and analysis, conducted emissions are
assumed to predominate below 30 MHz, while radiated emis-
sions predominate above this frequency.
CONDUCT E D E MISSIONS
T his is a measure of noise that is conducted onto the mains
power supply. T he noise is measured using a LISN (Linc Im-
pedance Stabilizing Network) and a spectrum analyzer. T he test
setup is illustrated in Figure 23. T he spectrum analyzer is set to
scan the spectrum from 0 MHz to 30 MHz. Figure 24 shows
that the level of conducted emissions from the ADM488/
ADM489 are well below the allowable limits.
SPECTRUM
ANALYZER
DUT
LISN
PSU
Figure 23. Conducted Emissions Test Setup
LOG FREQUENCY (0.15–30) – MHz
0.3
0.6
1
3
6
10
30
80
0
70
40
30
20
10
60
50
LIMIT
d
Figure 24. Conducted Emissions
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| ADM489ARUZ | 功能描述:IC TXRX RS-485 DIFF LP 16TSSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 標準包裝:1 系列:- 類型:線路收發(fā)器 驅(qū)動器/接收器數(shù):5/3 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC 包裝:Digi-Reel® 產(chǎn)品目錄頁面:918 (CN2011-ZH PDF) 其它名稱:296-25096-6 |
| ADM489ARUZ# | 制造商:Analog Devices 功能描述: |
| ADM489ARUZ-REEL | 功能描述:IC TXRX RS-485 DIFF LP 16TSSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 標準包裝:121 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):1/1 規(guī)程:RS422，RS485 電源電壓:3 V ~ 3.6 V 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應商設備封裝:10-DFN（3x3） 包裝:管件 |
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