| 摘要 |
A source driver has many channels, and each channel has a DAC, a clamp circuit and a fine tune circuit. The DAC selects a first reference voltage and a second reference voltage from a plurality of gamma voltages according to (N-1) most significant bits of an N-bit signal. The clamp circuit receives the two reference voltages and clamps an output voltage between the two reference voltages. The fine tune circuit adjusts the clamped output voltage to a target level according to the least significant bit of the N-bit signal.
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