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Precision Lowest-Cost Isolation Amplifier (Rev. C)
Texas Instruments
Description
The ISO124 is a precision isolation amplifier 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, resulting in excellent reliability and good high-frequency transient immunity across the barrier. Both barrier capacitors are imbedded in the plastic body of the package. The ISO124 is easy to use. No external components are required for operation. The key specifications are 0.010% max nonlinearity, 50kHz signal bandwidth, and 200µV/°C VOS drift. A power supply range of ±4.5V to ±18V and quiescent currents of ±5.0mA on VS1 and ±5.5mA on VS2 make these amplifiers ideal for a wide range of applications. The ISO124 is available in DIP-16 and SO-28 plastic surface mount packages.
Features
100% TESTED FOR HIGH-VOLTAGE BREAKDOWN RATED 1500Vrms HIGH IMR: 140dB at 60Hz 0.010% max NONLINEARITY BIPOLAR OPERATION: VO = ±10V DIP-16 AND SO-28 EASE OF USE: Fixed Unity Gain Configuration ±4.5V to ±18V SUPPLY RANGE APPLICATIONS INDUSTRIAL PROCESS CONTROL: Transducer Isolator, Isolator for Thermocouples, RTDs, Pressure Bridges, and Flow Meters, 4-20mA Loop Isolation GROUND LOOP ELIMINATION MOTOR AND SCR CONTROL POWER MONITORING PC-BASED DATA ACQUISITION TEST EQUIPMENT All trademarks are the property of their respective owners.
Related Datasheets
| Part Number | Description | Category |
| • DCH010505S | Miniature, 1W, 3kV Isolated, Unregulated DC/DC Converters (Rev. F) | ICs, Interface |
| • DCP010505B | Miniature, 1W Isolated Unregulated DC/DC Converters (Rev. E) | ICs, Interface |
| • INA105 | Precision Unity Gain Differential Amplifier | Actives - Sensors and Transducers |
| • ISO122 | Precision Lowest Cost Isolation Amplifier | Actives - Sensors and Transducers |
| • ISO150 | Dual, Isolated, Bi-Directional Digital Coupler (Rev. C) | EDA - Embedded Systems Design |
| • ISO721 | 3.3 V / 5 V High-Speed Digital Isolators (Rev. D) | EDA - Embedded Systems Design |
| • MPY634 | MPY634: Wide Bandwidth Precision Analog Multiplier (Rev. A) | Optoelectronic Components |
| • OPA237 | Single-Supply Operational Amplifiers MicroAmplifier (TM) Series (Rev. A) | Actives - Sensors and Transducers |
| • RCV420 | Precision 4mA to 20mA Current Loop Receiver | Actives - Sensors and Transducers |
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