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EVAL-ADM3252EEBZ

更新时间： 2024-01-06 17:46:36
品牌 Logo 应用领域
亚德诺 - ADI 驱动器
页数 文件大小 规格书
16页 352K
描述
Isolated, Dual Channel, RS-232 Line Driver/Receiver

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Isolated, Dual Channel, RS-232 Line  
Driver/Receiver  
Data Sheet  
ADM3252E  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
10µF  
C1  
0.1µF  
16V  
C3  
0.1µF  
10V  
C2  
0.1µF  
16V  
C4  
0.1µF  
16V  
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  
0.1µF  
C1+ C1– V+  
V
C2+ C2– V–  
VOLTAGE  
ISO  
ADM3252E  
2 × Tx and 2 × Rx channels  
VOLTAGE  
DOUBLER  
INVERTER  
Meets EIA/TIA-232E specifications  
ESD protection to IEC 1000-4-2 (801.2) on RINx and TOUTx pins  
Contact discharge: 8 kV  
V
CC  
RECT  
REG  
OSC  
Air gap discharge: 15 kV  
0.1 μF charge pump capacitors  
R
R
DECODE  
ENCODE  
DECODE  
ENCODE  
ENCODE  
DECODE  
ENCODE  
DECODE  
R
T
*
IN1  
R
T
OUT1  
T
IN1  
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  
OUT1  
R
*
R
OUT2  
IN2  
T
T
IN2  
T
OUT2  
IEC 60747-5-2 (VDE 0884, Part 2)  
GND  
GND  
ISO  
VIORM = 560 V peak  
*INTERNAL 5kΩ PULL-DOWN RESISTOR ON THE RS-232 INPUTS.  
CSA Component Acceptance Notice #5A  
Operating temperature range: −40°C to +85°C  
44-ball chip scale package ball grid array (CSP_BGA)  
Figure 1.  
APPLICATIONS  
Isolated RS-232 interface  
High noise data communications  
Industrial communications  
Industrial/telecommunications diagnostic ports  
Medical equipment  
isoPower technology in the ADM3252E uses high frequency  
GENERAL DESCRIPTION  
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 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  
on the RIN1, RIN2, TOUT1, and TOUT2 pins, the ADM3252E is ideally  
suited for operation in electrically harsh environments or where  
RS-232 cables are frequently plugged and unplugged.  
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.  
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.  
Rev. 0  
Information furnished by Analog Devices is believed to be accurate and reliable. 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.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.461.3113  
www.analog.com  
©2012 Analog Devices, Inc. All rights reserved.  
 
 
 
 
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