Abstract: A circuit arrangement and method vary in response to temperature changes the signal swing of an input signal to an analog circuit which has a temperature-dependent effective linear signal range. A variable gain circuit varies the signal swing of the input signal in response to a control signal supplied thereto by a temperature control circuit so that the signal swing tracks changes in the effective linear signal range of the analog circuit. In this manner, signal to noise ratio may be optimized and distortion may be minimized over a range of operating temperatures for the analog circuit.

Abstract: A plurality of high speed differential output drivers are coupled to a reference current generator such that each output driver receives a substantially identical copy of a reference current signal for controlling one or more operational parameters (e.g., the propagation delay or skew) of the output driver. Multiple copies of the reference current signal are generated within the same region of an integrated circuit chip, thereby minimizing any process variations within the chip that might cause variances between the individual copies of the reference current signal. Each differential output driver has a differential pair of transistors that are coupled to ground or supply voltage through a common mode resistor that controls the common mode component of the driver output independent of the voltage swing of the output.