| 摘要 |
A voltage buffer circuit is comprised of a differential input stage, a bias current generator, a first current mirror, and a second current mirror. The differential input stage has a non-inverting input coupled with an input voltage, and the input voltage is buffered to an output of the input stage as an output voltage. The bias current generator is coupled with the input voltage. The input voltage controls generation of a bias current in the bias current generator. The first current mirror is coupled with the differential input stage, and sets a mirror voltage of the input stage. The second current mirror is coupled with the bias current generator and to the differential input stage, and mirrors the bias current to create a tail current for the differential input stage.
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