Question 12.3: The ISO124 is an integrated circuit isolation amplifier. It ...
The ISO124 is an integrated circuit isolation amplifier. It has a voltage gain of 1 and operates on positive and negative dc supply voltages for both stages. This device uses pulse-width modulation (sometimes called duty cycle modulation) with a frequency of 500 kHz. It is recommended that the supply voltages be decoupled with external capacitors to reduce noise. Show the appropriate connections.
The manufacturer recommends a 1 \mu \mathrm{F} tantalum capacitor (for low leakage) from each dc power supply pin to ground. This is shown in Figure 12–10 where the supply voltages are \pm 15 \mathrm{~V}.
P R A C T I C E EXERCISE
The output signal may have some ripple introduced by the demodulation process. How could this ripple be removed?
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