Hi,
I am confused to whether the AD8211 (current shunt monitor) is good for measuring AC sine wave current. The AC sine wave is actually created by the AD9837, a programmable waveform generator. The resulting sine wave (~400Hz, 100mV pp) is fed into an audio amplifier STA540 (attached photo below --> IN_L) to amplify the sine wave to about 6V pp. I am using the amplifier in bridge mode as shown below but instead of the OUT_L speaker, I simply have a 4ohm shunt resistor. The AD8211 inputs would of course be connected to each side of the shunt resistor.
Since the signal is a true AC (0V centered) sine wave, I was unsure if this is an ok signal for the AD8211 to measure. Especially since a lot of current sensing applications talk about "high side" and "low side" sensing. Neither side of the shunt resistor is connected to GND so I'm really not sure if this could be classified as either high or low side. With AC signals is there such thing as a high or low side? Any help is appreciated!
AD8211 Datasheet
AD9837 Datasheet
STA540 Datasheet
I am confused to whether the AD8211 (current shunt monitor) is good for measuring AC sine wave current. The AC sine wave is actually created by the AD9837, a programmable waveform generator. The resulting sine wave (~400Hz, 100mV pp) is fed into an audio amplifier STA540 (attached photo below --> IN_L) to amplify the sine wave to about 6V pp. I am using the amplifier in bridge mode as shown below but instead of the OUT_L speaker, I simply have a 4ohm shunt resistor. The AD8211 inputs would of course be connected to each side of the shunt resistor.
Since the signal is a true AC (0V centered) sine wave, I was unsure if this is an ok signal for the AD8211 to measure. Especially since a lot of current sensing applications talk about "high side" and "low side" sensing. Neither side of the shunt resistor is connected to GND so I'm really not sure if this could be classified as either high or low side. With AC signals is there such thing as a high or low side? Any help is appreciated!
AD8211 Datasheet
AD9837 Datasheet
STA540 Datasheet
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