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參數(shù)資料
| 型號(hào)： | EVAL-ADM3251EEBZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVALUATION ADM3251 |
| 產(chǎn)品培訓(xùn)模塊： | Fully Isolated ADM3251E RS-232 Transceiver |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | isoPower® |
| 主要目的： | 接口，隔離式，RS-232 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | ADM3251E |
| 主要屬性： | 2.5 kV 隔離式（電源和數(shù)據(jù)）RS-232 收發(fā)器，隔離式 DC/DC 轉(zhuǎn)換器 |
| 已供物品： | 板，IC 樣品 |
| 產(chǎn)品目錄頁面： | 790 (CN2011-ZH PDF) |
| 相關(guān)產(chǎn)品： | ADM3251EARWZ-ND - IC TXRX RS232 ISOLATED 20-SOIC ADM3251EARWZ-REELDKR-ND - IC LINE DVR/RCVR RS232 20-SOIC ADM3251EARWZ-REELCT-ND - IC LINE DVR/RCVR RS232 20-SOIC ADM3251EARWZ-REELTR-ND - IC LINE DVR/RCVR RS232 20-SOIC |
Isolated, Single-Channel
RS-232 Line Driver/Receiver
Data Sheet
FEATURES
2.5 kV fully isolated (power and data) RS-232 transceiver
iso
Power integrated, isolated dc-to-dc converter
460 kbps data rate
1 Tx and 1 Rx
Meets EIA/TIA-232E specifications
ESD protection on RIN and TOUT pins
±8 kV: contact discharge
±15 kV: air gap discharge
0.1 μF charge pump capacitors
High common-mode transient immunity: >25 kV/μs
UL recognition
2500 V rms for 1 minute per UL 1577
VDE Certificate of Conformity
DIN EN 60747-5-2 (VDE 0884 Teil 2): 2003-01
CSA Component Acceptance Notice #5A
Operating temperature range: 40°C to +85°C
Wide body, 20-lead SOIC package
APPLICATIONS
High noise data communications
Industrial communications
General-purpose RS232 data links
Industrial/telecommunications diagnostic ports
Medical equipment
FUNCTIONAL BLOCK DIAGRAM
07388-
001
DECODE
RECT
REG
V–
C4
0.1F
16V
VOLTAGE
DOUBLER
C1+ C1– V+
VISO
C2+ C2–
R
T
VOLTAGE
INVERTER
VCC
ROUT
TIN
GND
GNDISO
RIN*
TOUT
ADM3251E
OSC
ENCODE
DECODE
*INTERNAL
5k PULL-DOWN RESISTOR ON THE RS-232 INPUT.
0.1F
C3
0.1F
10V
C2
0.1F
16V
0.1F
C1
0.1F
16V
Figure 1.
GENERAL DESCRIPTION
The ADM3251E1 is a high speed, 2.5 kV fully isolated, single-
channel RS-232/V.28 transceiver device that operates from a
single 5 V power supply. Due to the high ESD protection on the
RIN and TOUT pins, the device is ideally suited for operation in
electrically harsh environments or where RS-232 cables are
frequently being plugged and unplugged.
The ADM3251E incorporates dual-channel digital isolators
with isoPower integrated, isolated power. There is no requirement
to use a separate isolated dc-to-dc converter. Chip-scale trans-
former iCoupler technology from Analog Devices, Inc., is used
both for the isolation of the logic signals as well as for the inte-
grated dc-to-dc converter. The result is a total isolation solution.
The ADM3251E contains isoPower technology that uses high
frequency switching elements to transfer power through the
transformer. Special care must be taken during printed circuit
board (PCB) layout to meet emissions standards. Refer to
Application Note AN-0971, Control of Radiated Emissions with
isoPower Devices, for details on board layout considerations.
The ADM3251E conforms to the EIA/TIA-232E and ITU-T V. 28
specifications and operates at data rates up to 460 kbps.
Four external 0.1 μF charge pump capacitors are used for the
voltage doubler/inverter, permitting operation from a single
5 V supply.
The ADM3251E is available in a 20-lead, wide body SOIC package
and is specified over the 40°C to +85°C temperature range.
1
Protected by U.S. Patents 5,952,849; 6,873,065; and 7,075,329.
Rev. G
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
2008–2013 Analog Devices, Inc. All rights reserved.
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