Calibration apparatus and method thereof, multi-channel driving circuit and current balancing method
AssigneeLeadtrend Technology Corp.
InventorChing-Tsan Lee
Life of this patent
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Abstract
A calibration method for adjusting an offset voltage of a unit is proposed. The unit, capable of operating in a calibration mode or a normal mode, includes a first input terminal, a second input terminal and an output terminal. The calibration method includes: operating the unit in a calibration mode; providing a programmable voltage to the first input terminal; providing a constant voltage to the second input terminal; adjusting the programmable voltage monotonously when an output status of the output terminal is not changed; latching the programmable voltage when the output status toggles; and operating the unit in a normal mode after the output status toggles.
Claims5
A calibration method for adjusting an offset voltage of a unit under calibration, wherein the unit under calibration having a first input terminal, a second input terminal and an output terminal is configured to operate in a calibration mode or a normal mode, the calibration method comprising:
- operating the unit under calibration in the calibration mode;
- providing a programmable voltage to the first input terminal;
- providing a constant voltage to the second input terminal;
- adjusting the programmable voltage monotonously when an output status of the output terminal remains unchanged;
- latching the programmable voltage when the output status toggles;
- and
- operating the unit under calibration in the normal mode after the output status toggles.
Dependencies are inferred from the claim text.