ADM3251E Analog Devices, ADM3251E Datasheet
ADM3251E
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ADM3251E Summary of contents
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... 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. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. ...
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... ADM3251E TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Package Characteristics ............................................................... 5 Regulatory Information (Pending) ............................................ 5 Insulation and Safety-Related Specifications ............................ 5 DIN V VDE V 0884-10 (VDE V 0884-10):2006-12 Insulation Characteristics (Pending) ............................................................ 6 Absolute Maximum Ratings ............................................................ 7 ESD Caution .................................................................................. 7 REVISION HISTORY 7/08—Revision 0: Initial Version Pin Configuration and Function Descriptions ...
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... ISO Rev Page ADM3251E Unit Test Conditions/Comments 5 load 5 kΩ μA ISO μ −20 μA ROUTH ...
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... ADM3251E All voltages are relative to their respective ground; all minimum/maximum specifications apply over the entire recommended operating range 25° 3.3 V (dc-to-dc converter disabled), and the secondary side is powered externally otherwise noted. Table 2. Parameter DC CHARACTERISTICS V Operating Voltage Range CC DC-to-DC Converter Disable Threshold, V ...
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... Single/Basic Insulation, 2500 V rms Isolation Rating 1 In accordance with UL 1577, each ADM3251E is proof-tested by applying an insulation test voltage ≥3000 V rms for 1 sec (current leakage detection limit = 5 μA accordance with DIN V VDE V 0884-10, each ADM3251E is proof-tested by applying an insulation test voltage ≥1050 V peak for 1 sec (partial discharge detection limit = 5 pC) ...
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... ADM3251E DIN V VDE V 0884-10 (VDE V 0884-10):2006-12 INSULATION CHARACTERISTICS (PENDING) This isolator is suitable for reinforced isolation only within the safety limit data. Maintenance of the safety data is ensured by protective circuits. Table 6. Description Installation Classification per DIN VDE 0110 For Rated Mains Voltage ≤ 150 V rms For Rated Mains Voltage ≤ ...
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... Exposure to absolute – +0.3 V maximum rating conditions for extended periods may affect device reliability. −0 0 ±30 V ESD CAUTION ±15 V −0 0 Continuous 47.05°C/W −40°C to +85°C −65°C to +150°C 260°C Rev Page ADM3251E ...
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... If the integrated dc-to-dc converter is disabled, power the secondary side by applying a voltage in the range this pin ISO C1 GND C1– 4 ADM3251E 17 GND TOP VIEW OUT (Not to Scale) GND GND C2 C2– ...
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... kΩ 400 350 300 250 200 150 100 50 0 4.50 5.0 5 kΩ ISO L Rev Page ADM3251E Tx OUTPUT HIGH ( OUTPUT HIGH (V = 3.3V) ISO Tx OUTPUT LOW (V = 3.3V) ISO Tx OUTPUT LOW ( LOAD CURRENT (mA 5V 3.3V) ISO V– ...
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... ADM3251E 400 350 V– 300 250 200 V+ 150 100 50 0 3.00 3.25 3.50 3.75 4.00 4.25 4.50 V (V) ISO Figure 9. Charge Pump Impedance vs. V 200 180 V = 5.5V CC 160 140 120 V 100 138 184 230 276 DATA RATE (kbps) Figure 10. Primary Supply Current vs. Data Rate 4 ...
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... THEORY OF OPERATION The ADM3251E is a high speed, 2.5 kV fully isolated, single- channel RS-232 transceiver device that operates from a single power supply. The internal circuitry consists of the following main sections: • Isolation of power and data • A charge pump voltage converter • A 5.0 V logic to EIA/TIA-232E transmitter • ...
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... The ADM3251E offers high slew rates, permitting data trans- mission at rates well in excess of the EIA/TIA-232E specifications. The RS-232 voltage levels are maintained at data rates up to 460 kbps. THERMAL ANALYSIS Each ADM3251E device consists of three internal die, attached , but split-paddle lead frame. For the purposes of thermal analysis, ISO . ...
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... The ADM3251E requires no external circuitry for its logic interfaces. Power supply bypassing is required at the input and output supply pins (see Figure 18). The power supply section of the ADM3251E uses a 300 MHz oscillator frequency to pass power through its chip-scale trans- formers. In addition, the normal operation of the data section of the iCoupler introduces switching transients on the power supply pins ...
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... CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN. ORDERING GUIDE Model Temperature Range 1 ADM3251EARWZ −40°C to +85°C 1 ADM3251EARWZ-REEL −40°C to +85° RoHS Compliant Part. 13.00 (0.5118) 12.60 (0.4961) 11 7.60 (0.2992) 7.40 (0.2913) 10.65 (0.4193 ...
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... NOTES Rev Page ADM3251E ...
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... ADM3251E NOTES ©2008 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D07388-0-7/08(0) Rev Page ...