Patent ID: 7583941
Filing Date: 2009-09-01
Classification: H03F,H03G

Abstract:
1. An apparatus comprising: a first plurality of current multipliers to adjust gain of an input signal; a first plurality of switches coupled to respective first plurality of current multipliers to switch in and switch out respective first plurality of current multipliers based on a gain control signal; a second plurality of current multipliers to adjust a DC level associated with the input signal; a second plurality of switches coupled to respective second plurality of current multipliers to switch in and switch out respective second plurality of current multipliers to compensate for DC level changes when first plurality of current multipliers are switched in and out; and a load coupled to receive current from switched in first plurality of current multipliers and switched in second plurality of current multipliers, in which the switched in current to the load provides a gain adjusted and DC level, DC offset compensated current signal that is to be converted to a voltage signal.