Output stage having a high disabled output impedance and a low power integrated back buffer to provide disabled output device protection

摘要: A high impedance node of a transimpedance stage drives the input unity-gain forward buffer. integrated back-buffer is enabled to drive high-impedance from output buffer when disabled. voltage limits reverse-biasing all transistors in back disabled, and The output-driver are bootstrapped through resistors which, enabled, bias pre-driver transistor coupled transistors. Neither nor consume significant amount power not enabled.