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Isolated amplifier extends life for industrial voltage sensing

It is designed for isolated voltage sensing in factory automation and control, grid infrastructure, rail transport and motor drive applications.


The capacitive isolation technology enables 50% higher working voltages than required by isolation industry standards, says the company as well as common-mode transient immunity (CMTI) of up to 80kV/µs and robust operation over an extended industrial temperature range of -55 to 125°.


The high-precision ISO224 enables more accurate measurements of ±10V signals, which are widely used in industrial applications with 25% better nonlinearity, eight times lower gain error, lower offset drift and faster system response than similar competitive devices, according to the company.


In addition, board space can be reduced as the amplifier’s 60% smaller package than the previous-generation ISO12x amplifiers as well as its output that supports direct connection to an ADC 5.0V input. The amplifier also has a single, high-side supply with integrated voltage detection that simplifies the design and system-level diagnostics, adds the company.


Designers can download the TINA-TI SPICE model and then simulate and analyse their circuit behaviour with the isolated amplifier by downloading the SIM TINA-TI reference design, the ISO224 TINA-TI SPICE model, or by using the ISO224 evaluation module.


Pre-production samples are available now, available in an eight-pin, 5.85 x 7.5mm small-outline integrated circuit (SOIC) package.



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