ISO164 and ISO174 are PGA input isolation amplifiersincorporating a novel duty cycle modulation-demodulationtechnique which provides excellent accuracy.Internal input protection can withstand up to±40V differential inputs without damage. The signal istransmitted digitally across a differential capacitivebarrier. With digital modulation the barrier characteristicsdo not affect signal integrity. This results inexcellent reliability and good high frequency transientimmunity across the barrier. Both the amplifier andbarrier capacitors are housed in a plastic DIP. ISO164and ISO174 differ in frequency response and linearity.These amplifiers are easy to use. No external componentsare required. A power supply range of ±4.5V to±18V makes these amplifiers ideal for a wide range ofapplications.
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