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| 型号： | EVAL-ADM3252EEBZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR ADM3252E |
| 标准包装： | 1 |
| 主要目的： | 接口，隔离式，RS-232 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | ADM3252E |
| 主要属性： | 2.5 kV 隔离式（电源和数据）RS-232 收发器，隔离式 DC/DC 转换器 |
| 次要属性： | 2 通道 |
| 已供物品： | 板 |
Isolated, Dual Channel, RS-232 Line
Driver/Receiver
Data Sheet
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
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
2012–2013 Analog Devices, Inc. All rights reserved.
FEATURES
2.5 kV fully isolated (power and data) RS-232 transceiver
isoPower integrated, isolated dc-to-dc converter
Operational from single 3.3 V or 5 V supply
460 kbps data rate
2 × Tx and 2 × Rx channels
Meets EIA/TIA-232E specifications
ESD protection to IEC 61000-4-2 on RINx and TOUTx pins
Contact discharge: ±8 kV
Air gap discharge: ±15 kV
0.1 μF charge pump capacitors
High common-mode transient immunity: >25 kV/μs
Safety and regulatory approvals (pending)
UL recognition
2500 V rms for 1 minute per UL 1577
VDE certificate of conformity
IEC 60747-5-2 (VDE 0884, Part 2)
VIORM = 560 V peak
CSA Component Acceptance Notice #5A
Operating temperature range: 40°C to +85°C
44-ball chip scale package ball grid array (CSP_BGA)
APPLICATIONS
Isolated RS-232 interface
High noise data communications
Industrial communications
Industrial/telecommunications diagnostic ports
Medical equipment
FUNCTIONAL BLOCK DIAGRAM
Figure 1.
GENERAL DESCRIPTION
The ADM3252E is a high speed, 2.5 kV, fully isolated, dual-
channel RS-232/V.28 transceiver device that is operational from
a single 3.3 V or 5 V power supply. Because of high ESD protection
suited for operation in electrically harsh environments or where
RS-232 cables are frequently plugged and unplugged.
The ADM3252E provides four independent isolation channels
using the integrated and isolated power of isoPower. There is
no requirement to use a separate isolated dc-to-dc converter. Chip
scale transformer iCoupler technology from Analog Devices, Inc.,
is used for both the isolation of the logic signals and the integrated
dc-to-dc converter. The result is a total isolation solution.
iso
Power technology in the ADM3252E uses high frequency
switching elements to transfer power through its transformer.
Special care must be taken during printed circuit board (PCB)
layout to meet emissions standards. Refer to the AN-0971
Application Note, Recommendations for Control of Radiated
Emissions with isoPower Devices, for details on board layout
considerations.
The ADM3252E conforms to the EIA/TIA-232E and ITU-T V.28
specifications and operates at data rates of up to 460 kbps. Four
external 0.1 μF charge pump capacitors are used for the voltage
doubler/inverter, permitting operation from a single 3.3 V or 5 V
supply. The ADM3252E is available in a 44-ball, chip scale
package ball grid array (CSP_BGA) and is specified over the
40°C to +85°C temperature range.
RECT
REG
V–
C4
0.1F
16V
VOLTAGE
DOUBLER
C1+ C1– V+
VISO
C2+ C2–
VOLTAGE
INVERTER
VCC
GND
GNDISO
ADM3252E
OSC
DECODE
R
ROUT1
RIN1*
ENCODE
TIN1
T
TOUT1
ENCODE
DECODE
R
ROUT2
RIN2*
ENCODE
TIN2
T
TOUT2
ENCODE
DECODE
10
F
0.
1
F
C3
0.1F
10V
C2
0.1F
16V
0.1F
10F
C1
0.1F
16V
*INTERNAL 5k PULL-DOWN RESISTOR ON THE RS-232 INPUTS.
10
51
5-
0
01
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