Patent ID: 8188899
Filing Date: 2012-05-29
Classification: H03M

Abstract:
1. An apparatus comprising: a first resistor segment having a plurality of sub-segments, each sub-segment comprising one or more resistor elements; a second resistor segment having a plurality of sub-segments, each sub-segment comprising one or more resistor elements; a plurality of switches interconnecting the sub-segments of the first and second segments; at least one sub-segment having an upper additional resistor element and a lower additional resistor element, the upper additional resistor element being disposed between a first switch and a first adjacent sub-segment, and the lower additional resistor element being disposed between a second one of the switches and a second adjacent sub-segment; and further wherein the resistor elements in each of the sub-segments of the first resistor segment further each comprise a plurality, N the resistor elements in each of the sub-segments of the second resistor segment further each comprise a plurality, N the upper and lower additional resistor elements further comprise a plurality, NT, of unit resistors where NT depends on