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xortan said:Yeah but the problem I am having trouble understanding/implementing is if I want to offset it by -1.38V how do I generate that when the rails of my op-amp are only 0-9V. I heard adding a virtual ground is how you get over this problem but I don't know how to implement a virtual ground and a biasing circuit at once for this design.
A single supply instrumentation amplifier is a type of operational amplifier (op-amp) that is designed to operate with a single power supply instead of the traditional dual power supplies. It is commonly used in applications where only a single positive voltage supply is available, such as battery-powered devices.
A traditional op-amp requires both a positive and negative power supply to operate, while a single supply instrumentation amplifier only needs a positive power supply. This is achieved through internal circuitry that creates a virtual ground, allowing the amplifier to work with a single supply.
Using a single supply instrumentation amplifier can greatly simplify circuit design, reduce the number of required components, and lower overall system costs. It is also more convenient for portable and battery-powered applications as it only requires one power supply.
Single supply instrumentation amplifiers are commonly used in low-voltage and battery-powered applications such as medical devices, portable instrumentation, and automotive electronics. They are also used in sensor signal conditioning and data acquisition systems.
When choosing a single supply instrumentation amplifier, it is important to consider factors such as input offset voltage, gain accuracy, bandwidth, and power consumption. It is also important to ensure that the amplifier is capable of operating with the desired single supply voltage range.