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ISO121 Datasheet(PDF) 1 Page - Texas Instruments |
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ISO121 Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 18 page  Precision Low Cost ISOLATION AMPLIFIER ISO120 ISO121 Signal Com 2 –V S2 Gnd 2 +V S2 Ext Osc +V S1 Gnd 1 –V S1 Signal Com 1 V OUT C 1L C 1H Sense C 2L C 2H Isolation Barrier V IN DESCRIPTION The ISO120 and ISO121 are precision isolation ampli- fiers incorporating a novel duty cycle modulation- demodulation technique. The signal is transmitted digitally across a 2pF differential capacitive barrier. With digital modulation the barrier characteristics do not affect signal integrity, which results in excellent reliability and good high frequency transient immu- nity across the barrier. Both the amplifier and barrier capacitors are housed in a hermetic DIP. The ISO120 and ISO121 differ only in package size and isolation voltage rating. These amplifiers are easy to use. No external compo- nents are required for 60kHz bandwidth. With the addition of two external capacitors, precision specifi- cations of 0.01% max nonlinearity and 150 µV/°C max V OS drift are guaranteed with 6kHz bandwidth. A power supply range of ±4.5V to ±18V and low quies- cent current make these amplifiers ideal for a wide range of applications. FEATURES q 100% TESTED FOR PARTIAL DISCHARGE q ISO120: Rated 1500Vrms q ISO121: Rated 3500Vrms q HIGH IMR: 115dB at 60Hz q USER CONTROL OF CARRIER FREQUENCY q LOW NONLINEARITY: ±0.01% max q BIPOLAR OPERATION: V O = ±10V q 0.3"-WIDE 24-PIN HERMETIC DIP, ISO120 q SYNCHRONIZATION CAPABILITY q WIDE TEMP RANGE: –55 °C to +125°C (ISO120) APPLICATIONS q INDUSTRIAL PROCESS CONTROL: Trans- ducer Isolator for Thermocouples, RTDs, Pressure Bridges, and Flow Meters, 4mA to 20mA Loop Isolation q GROUND LOOP ELIMINATION q MOTOR AND SCR CONTROL q POWER MONITORING q ANALYTICAL MEASUREMENTS q BIOMEDICAL MEASUREMENTS q DATA ACQUISITION q TEST EQUIPMENT International Airport Industrial Park • Mailing Address: PO Box 11400 • Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706 Tel: (520) 746-1111 • Twx: 910-952-1111 • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132 © 1988 Burr-Brown Corporation PDS-820D Printed in U.S.A. March, 1992 SBOS158 |
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Similar Description - ISO121 |
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