ADM2483BRW Analog Devices Inc, ADM2483BRW Datasheet
ADM2483BRW
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ADM2483BRW Summary of contents
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FEATURES RS-485 transceiver with electrical data isolation Complies with ANSI TIA/EIA RS-485-A and ISO 8482: 1987(E) 500 kbps data rate Slew rate-limited driver outputs Low power operation: 2.5 mA max Suitable for operations (V DD1 ...
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ADM2483 TABLE OF CONTENTS Specifications..................................................................................... 3 Timing Specifications....................................................................... 4 Absolute Maximum Ratings............................................................ 5 ESD Caution.................................................................................. 5 Package Characteristics ............................................................... 6 Regulatory Information............................................................... 6 Insulation and Safety-Related Specifications............................ 6 VDE 0884 Insulation Characteristics ........................................ 7 Pin Configuration and Function Descriptions............................. 8 ...
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SPECIFICATIONS 2.7 ≤ V ≤ 5.5 V, 4.75 V ≤ V ≤ 5. DD1 DD2 Table 1. Parameter DRIVER Differential Outputs Differential Output Voltage ∆ for Complementary Output States OD Common-Mode Output Voltage, V ...
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ADM2483 TIMING SPECIFICATIONS 2.7 ≤ V ≤ 5.5 V, 4.75 V ≤ V ≤ 5. DD1 DD2 Table 2. Parameter Min DRIVER Maximum Data Rate 500 Propagation Delay 250 PLH PHL Skew, t SKEW Rise/Fall ...
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ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. All voltages are relative to A their respective ground. Table 3. Parameter V DD1 V DD2 Digital Input Voltage (DE, RE, TxD) Digital Output Voltage RxD Driver Output/Receiver Input Voltage ESD ...
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ADM2483 PACKAGE CHARACTERISTICS Table 4. Parameter 1 Resistance (Input-Output) 1 Capacitance (Input-Output) 2 Input Capacitance Input IC Junction-to-Case Thermal Resistance Output IC Junction-to-Case Thermal Resistance 1 Device considered a 2-terminal device: Pins and ...
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VDE 0884 INSULATION CHARACTERISTICS This isolator is suitable for basic electrical isolation only within this safety limit data. Maintenance of this safety data shall be ensured by means of protective circuits. An asterisk (*) on the physical package denotes VDE ...
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ADM2483 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 8. Pin Function Descriptions Pin No. Mnemonic 1 V DD1 2, 8 GND 1 3 RxD TxD GND 2 10, 11 ...
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TEST CIRCUITS Figure 3. Driver Voltage Measurement 375Ω V 60Ω OD3 375Ω Figure 4. Driver Voltage Measurement A R LDIFF B Figure 5. Driver Propagation Delay TEST ...
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ADM2483 SWITCHING CHARACTERISTICS V DD1 0.5V 0.5V DD1 0V t PLH B 1/2VO – SKEW PLH PHL V OH 90% POINT A, B 10% POINT Figure 9. Driver Propagation ...
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TYPICAL PERFORMANCE CHARACTERISTICS 1.6 I _RCVR_ENABLE @ 5.5V DD1 1.4 1.2 1.0 0.8 I _DE_ENABLE @ 5.5V DD2 0.6 0.4 0.2 0 –40 25 TEMPERATURE (°C) Figure 13. Unloaded Supply Current vs. Temperature 120 100 ...
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ADM2483 460 t @ P_BLH 5.0V DD1 DD2 440 t @ P_AHL DD1 420 400 t @ P_BHL 5.0V DD1 DD2 380 t P_ALH V DD1 360 340 –40 ...
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BUS SIDE 200 150 LOGIC SIDE 100 100 CASE TEMPERATURE (°C) Figure 23. Thermal Derating Curve, Dependence of Safety-Limiting Values with Case Temperature per VDE 0884 0 –5 –10 –15 –20 –25 –30 ...
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ADM2483 CIRCUIT DESCRIPTION ELECTRICAL ISOLATION In the ADM2483, electrical isolation is implemented on the logic side of the interface. Therefore, the part has two main sections: a digital isolation section and a transceiver section (see Figure 26). Driver input and ...
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TRUTH TABLES The following truth tables use these abbreviations: Letter Description H High level L Low level X Irrelevant Z High impedance (off) NC Disconnected Table 9. Transmitting Supply Status Inputs TxD DD1 DD2 ...
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ADM2483 Given the geometry of the receiving coil and an imposed requirement that the induced voltage is, at most, 50% of the 0.5 V margin at the decoder, a maximum allowable magnetic field is calculated, as shown in Figure 27. ...
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APPLICATIONS INFORMATION POWER_VALID INPUT To avoid chatter on the A and B outputs caused by slow power- up and power-down transients on V DD1 ADM2483 features a power_valid (PV) digital input. This pin should be driven low until V exceeds ...
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... COPLANARITY ORDERING GUIDE Model Data Rate (kbps) ADM2483BRW 500 ADM2483BRW-REEL 1 500 2 ADM2483BRWZ 500 1, 2 ADM2483BRWZ-REEL 500 1 A -REEL suffix designates a 13-inch (1,000 units) tape-and-reel option Pb-free part. 10.50 (0.4134) 10.10 (0.3976 7.60 (0.2992) 7.40 (0.2913) 10.65 (0.4193 ...
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NOTES Rev Page ADM2483 ...
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ADM2483 NOTES © 2005 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D04736–0–3/05(B) Rev Page ...