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DataConverter-Slide8

Gain error changes the slope of the transfer function. From an absolute value perspective, the gain error shifts each digital output code by a different amount. However, the effect is linear with each output being changed by an equal percentage of its correct value. Different bipolar converter architectures have different zero points for gain error. Some have a pivot (or rotation) about analog zero (center diagram above) and some about digital zero (right-hand diagram).

PTM Published on: 2009-08-24