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ADM202EARW 参数 Datasheet PDF下载

ADM202EARW图片预览
型号: ADM202EARW
PDF下载: 下载PDF文件 查看货源
内容描述: EMI / EMC兼容, ±15千伏ESD保护的RS - 232线路驱动器/接收器 [EMI/EMC-Compliant, +-15 kV, ESD-Protected RS-232 Line Drivers/Receivers]
分类和应用: 驱动器
文件页数/大小: 16 页 / 245 K
品牌: AD [ ANALOG DEVICES ]
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EMI/EMC-Compliant, ±15 kV, ESD-Protected
RS-232 Line Drivers/Receivers
ADM202E/ADM1181A
FEATURES
Complies with 89/336/EEC EMC directive
ESD protection to IEC1000-4-2 (801.2)
±8 kV: contact discharge
±15 kV: air-gap discharge
±15 kV: human body model
EFT fast transient/burst immunity (IEC1000-4-4)
Low EMI emissions (EN55022)
230 kbits/s data rate guaranteed
TSSOP package option
Upgrade for MAX202E, 232E, LT1181A
FUNCTIONAL BLOCK DIAGRAMS
5V INPUT
0.1µF
10V
0.1µF
10V
C1+
C1–
C2+
C2–
+5V TO +10V V
CC
VOLTAGE
V+
DOUBLER
+10V TO –10V V–
VOLTAGE
INVERTER
T1
T2
R1
R2
C3
0.1µF
6.3V
C4
0.1µF
10V
T1
OUT
T2
OUT
R1
IN
R2
IN
EIA/TIA-232
OUTPUTS
C5
0.1µF
T1
IN
CMOS
INPUTS
T2
IN
R1
OUT
R2
OUT
CMOS
OUTPUTS
APPLICATIONS
General-purpose RS-232 data link
Portable instruments
PDAs
EIA/TIA-232
INPUTS
*
GND
ADM202E
00066-001
00066-002
*
INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT
Figure 1.
5V INPUT
0.1µF
10V
0.1µF
10V
C1+
C1–
+5V TO +10V V
CC
VOLTAGE
V+
DOUBLER
C4
0.1µF
10V
T1
OUT
T2
OUT
R1
IN
R2
IN
EIA/TIA-232
INPUTS
*
C5
0.1µF
10V
C2+ +10V TO –10V V–
VOLTAGE
C2–
INVERTER
T1
T2
R1
R2
C3
0.1µF
10V
GENERAL DESCRIPTION
The ADM202E and ADM1181A are robust, high speed,
2-channel RS-232/V.28 interface devices that operate from a
single 5 V power supply. Both products are suitable for operation
in harsh electrical environments and are compliant with the EU
directive on EMC (89/336/EEC). Both the level of electromagnetic
emissions and immunity are in compliance. EM immunity
includes ESD protection in excess of ±15 kV on all I/O lines,
fast transient/burst protection (1000-4-4), and radiated
immunity (1000-4-3). EM emissions include radiated and
conducted emissions as required by Information Technology
Equipment EN55022, CISPR22.
The ADM202E and ADM1181A conform to the EIA-232E
and CCITT V.28 specifications and operate at data rates up
to 230 kbps.
Four external 0.1 µF charge-pump capacitors are used for the
voltage doubler/inverter, permitting operation from a single
5 V supply.
T1
IN
CMOS
INPUTS
T2
IN
R1
OUT
R2
OUT
EIA/TIA-232
OUTPUTS
CMOS
OUTPUTS
GND
ADM1181A
*
INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT
Figure 2.
The ADM202E provides a robust pin-compatible upgrade for
existing ADM202, ADM232L, or MAX202E/MAX232E sockets.
It is available in a 16-lead PDIP, a wide SOIC, a narrow SOIC,
and a space-saving TSSOP package that is 44% smaller than the
SOIC package.
The ADM1181A provides a robust pin-compatible upgrade for
the LTC1181A, and it is available in a 16-lead PDIP package
and a wide 16-lead SOIC package.
Rev. C
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However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
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Fax: 781.326.8703
© 2005 Analog Devices, Inc. All rights reserved.