Temperature compensation of floating-gate transistors in field-programmable analog arrays

Analog pre-processing has been shown to be energy efficient in a wide variety of low-power applications. Reprogrammable analog devices have leveraged this energy efficiency and applied it to a wider application space, but they still require accurate and stable bias currents for proper operation. For single-application devices, it is sufficient to create temperature compensation schemes that apply to a single bias current. But for reprogrammable or reconfigurable platforms which can be used in a variety of applications, temperature compensation must work well over a large range of potential bias currents and for a large number of different components. In this paper, we present temperature compensation for floating-gate transistors in a reconfigurable system which improves performance over a wide range of currents and temperatures.