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參數(shù)資料
| 型號： | ADM202EARW |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| 中文描述： | DUAL LINE TRANSCEIVER, PDSO16 |
| 封裝： | MS-013AA, SOIC-16 |
| 文件頁數(shù)： | 5/12頁 |
| 文件大小： | 163K |
| 代理商： | ADM202EARW |
ADM202E/ADM1181A
–5–
REV. 0
HIGH BAUD RAT E
T he ADM202E/ADM1181A feature high slew rates permitting
data transmission at rates well in excess of the EIA/RS-232-E
specifications. RS-232 voltage levels are maintained at data rates
up to 230 kb/s even under worst case loading conditions. T his
allows for high speed data links between two terminals or indeed
it is suitable for the new generation I
SDN
modem standards which
requires data rates of 230 kbps. T he slew rate is internally con-
trolled to less than 30 V/
μ
s in order to minimize EMI interference.
E SD/E FT T RANSIE NT PROT E CT ION SCHE ME .
T he ADM202E/ADM1181A use protective clamping structures
on all inputs and outputs which clamp the voltage to a safe level
and dissipate the energy present in ESD (Electrostatic) and
EFT (Electrical Fast T ransients) discharges. A simplified sche-
matic of the protection structure is shown in Figure 3. Each in-
put and output contains two back-to-back high speed clamping
diodes. During normal operation with maximum RS-232 signal
levels, the diodes have no effect as one or the other is reverse bi-
ased depending on the polarity of the signal. If however the volt-
age exceeds about 50 V in either direction, reverse breakdown
occurs and the voltage is clamped at this level. T he diodes are
large p-n junctions that are designed to handle the instanta-
neous current surge which can exceed several amperes.
T he transmitter outputs and receiver inputs have a similar pro-
tection structure. T he receiver inputs can also dissipate some of
the energy through the internal 5 k
resistor to GND as well as
through the protection diodes.
T he protection structure achieves ESD protection up to
±
15 kV
and EFT protection up to
±
2 kV on all RS-232 I/O lines. T he
methods used to test the protection scheme are discussed later.
R
IN
RX
D1
D2
RECEIVER
INPUT
R1
Figure 3a. Receiver Input Protection Scheme
RX
D1
D2
TRANSMITTER
OUTPUT
T
OUT
Figure 3b. Transmitter Output Protection Scheme
Typical Performance Curves
START 30.0 MHz
STOP 200.0 MHz
LIMIT
d
80
70
60
50
40
30
20
10
0
Figure 4. EMC Radiated Emissions
LOG FREQUENCY – MHz
80
70
0
0.3
30
0.6
1
60
50
10
40
30
20
3
6
10
d
LIMIT
Figure 5. EMC Conducted Emissions
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADM202E | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| ADM1181 | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| ADM1181A | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| ADM202EAN | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| ADM202EARN | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
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| ADM202EARWZ | 功能描述:IC TX/RX RS-232 5V 15KV 16SOIC 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:98 系列:* |
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| ADM202JN | 功能描述:IC TX/RX RS-232 5V 15KV 16DIP RoHS:否 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 |
| ADM202JNZ | 功能描述:IC TX/RX RS-232 5V 15KV 16DIP 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: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(yīng)商設(shè)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 |
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