參數(shù)資料
型號: ADM489ARZ-REEL
廠商: Analog Devices Inc
文件頁數(shù): 5/16頁
文件大小: 0K
描述: IC TXRX RS-485 DIFF LP 14SOIC
標(biāo)準(zhǔn)包裝: 2,500
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: 4.5 V ~ 5.5 V
安裝類型: 表面貼裝
封裝/外殼: 14-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 14-SOICN
包裝: 帶卷 (TR)
ADM488/ADM489
Rev. D | Page 13 of 16
The ADM488/ADM489 comfortably meet 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.
Table 9. Field Strengths
Level V/m
Field Strength
1
2
3
10
EMI EMISSIONS
The ADM488/ADM489 contain internal slew rate limiting to
minimize the level of electromagnetic interference generated.
Figure 27 shows an FFT plot when transmitting a 150 kHz data
stream.
10
0%
100
90
10dB/DIV
500kHz/DIV
05MHz
00
07
9-
0
27
Figure 27. Driver Output Waveform and FFT Plot Transmitting at 150 kHz
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 technology
equipment (ITE).
The objective is to control the level of both conducted and
radiated emissions.
For ease of measurement and analysis, conducted emissions are
assumed to predominate below 30 MHz, while radiated
emissions predominate above this frequency.
CONDUCTED EMISSIONS
Conducted emissions are a measure of noise that is conducted
onto the main power supply. The noise is measured using a
LISN (line impedance stabilizing network) and a spectrum
analyzer. The test setup is shown in Figure 28. The spectrum
analyzer is set to scan the spectrum from 0 MHz to 30 MHz.
Figure 29 shows that the level of conducted emissions from the
ADM488/ADM489 is well below the maximum allowable
limits.
DUT
LISN
PSU
SPECTRUM
ANALYZER
00
07
9-
0
28
Figure 28. Conducted Emissions Test Setup
log FREQUENCY (0.15–30) (MHz)
0.3
0.6
1
36
10
30
80
0
70
40
30
20
10
60
50
LIMIT
dB
(
V
)
00
07
9-
0
29
Figure 29. Conducted Emissions
相關(guān)PDF資料
PDF描述
13282-18SG-331 CONN PLUG 18POS CABLE SKT
VE-BNZ-MV-F1 CONVERTER MOD DC/DC 2V 60W
AD7828BR IC ADC 8BIT 8CH HS 28-SOIC
AD7492BRUZ-5 IC ADC 12BIT REF/CLOCK 24TSSOP
ADM3311EACPZ-REEL IC TXRX RS-232 3:5 2.7V 32LFCSP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADM489ARZ-REEL7 功能描述:IC TXRX RS-485 DIFF LP 14SOIC 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(biāo)準(zhǔn)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(yīng)商設(shè)備封裝:10-DFN(3x3) 包裝:管件
ADM51 功能描述:電路內(nèi)置調(diào)試器 In-Circuit Debugger w/Chameleon RoHS:否 制造商:Microchip Technology 產(chǎn)品:In-Circuit Debugger Kits 工具用于評估:PIC MCUs, dsPIC DSCs 用于:07-00024, AC164113 核心:dsPIC, PIC 接口類型:USB 工作電源電壓:3 V to 5 V
ADM-51 制造商:TDK 功能描述:
ADM5120 制造商:未知廠家 制造商全稱:未知廠家 功能描述:HOME GATEWAY CONTROLLER
ADM5120ABT2NP 制造商:Infineon Technologies AG 功能描述:ROUTER / AP