N-well resistor leakage cancellation
AssigneeNational Semiconductor Corporation
InventorPerry S. Lorenz
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AssigneeNational Semiconductor Corporation
InventorPerry S. Lorenz
Estimating the term…
A circuit is used to cancel the effects of leakage in resistive circuits. A resistive circuit is used to generate a reference signal. The resistive circuit is subject to leakage at high temperatures. A matching leakage generator is selected to have leakage characteristics that are similar to the leakage characteristics of the resistive circuit. The matching leakage generator is used to generate a representative leakage current that is similar to the leakage current that is undesirably present in the resistive circuit. The representative leakage current is mirrored by a current mirror circuit. The mirrored leakage current is used to cancel the effects of leakage in the resistive circuit. Canceling the leakage current improves the accuracy of the reference signal at higher temperatures. The reference signal accuracy at high temperatures is improved because the effects of leakage current (which are greater at higher temperatures) are cancelled by the mirrored leakage current.
A circuit for canceling leakage in resistive circuits, comprising:
A circuit for canceling leakage in resistive circuits, comprising:
A method for canceling leakage in resistive circuits, comprising:
Dependencies are inferred from the claim text.