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Microbridge Rejustor™ Design Challenge Official Entry |
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Title: |
Precision Transconductance Amplifier |
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Abstract: |
A deceptively simple opamp circuit either sources or sinks a current to ground, depending on the polarity of the input voltage. It can be configured in either inverting or non-inverting mode. Different component values allow it to source or sink current up to the opamp's built-in limit. The values in the example have been chosen to provide a good tradeoff between maximum current and accuracy.
For accuracy it requires closely matched resistors. Adding the MBD-472-AS removes the need for matched resistors and improves the accuracy of the circuit.
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Submitted By: |
davidcj |
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Submitted On: |
12/10/2007 |
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Total Views: |
680 |
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