Memory device and signal driving device thereof

摘要

A signal driving device includes a constant current circuit configured to provide a constant current, a first mirror circuit configured to generate a mirror current from the constant current and provide a voltage according to the mirror current of the constant current, a circuit comprising a switch device and configured to provide a driver current, a second mirror circuit configured to generate a mirror current of the driver current and output a voltage that includes a voltage drop caused when the mirror current of the driver current flows through a replica switch device, and a differential amplifier configured to receive the voltage from the first mirror circuit and the voltage from the second mirror circuit to provide a biased voltage for the bias circuit and thereby induce the driver current.

主权项

1. A signal driving device, comprising:
a constant current circuit configured to provide a constant current; a first mirror circuit configured to generate a mirror current from the constant current and provide a voltage according to the mirror current of the constant current; a circuit comprising a switch device and configured to provide a driver current; a second mirror circuit comprising a replica switch device, configured to generate a mirror current of the driver current and output a voltage that includes a voltage drop caused when the mirror current of the driver current flows through the replica switch device; and a differential amplifier configured to receive the voltage from the first mirror circuit and the voltage from the second mirror circuit in order to provide a biased voltage for the bias circuit and thereby induce the driver current.