Arbitrary power law function generator

摘要

The arbitrary power law function generator uses an equal number of exponential and logarithmic circuits, e.g., two exponential and two logarithmic circuits, which are current-mode, current-controlled circuits that provide positive, negative, integer, or non-integer powers independent of temperature. Moreover, the circuit can operate from a DC power supply as low as ±1.5V. SPICE simulation results using practical bipolar junction transistor (BM parameters are included to confirm the feasibility of the function generator.