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LINEARIZING_X_INPUT

2017-03-10 16:08  
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LINEARIZING_X_INPUT
Adding resistors as shown to IC transconductance multiplier gives major improvement in X-input linearization. Article gives adjustment procedure. SMILE and FROWN terminal notes refer to X feedthrough pattern observed on CRO during setup, telling which position requires addition of RSEL resistor.-L. Counts, Reduce Multiplier Errors by up to an Order of Magnitude, EDN Magazine, March 20, 1974, p 65-68.