Abstract: A semiconductor multichip module includes a plurality of semiconductor chips, a static plate having a plurality of insertion holes for receiving the plurality of chips, a shield cap attached onto the lower surface of the static plate for preventing the chips from deviating downward through the insertion holes, an external terminal unit formed over the chips for externally transmitting electrical signals of the chips, and a plurality of clip-type clamp springs clamping the shield cap and the external terminal unit for preventing the chips from externally deviating. The multichip module improves productivity by decreasing production hours and enables effective chips to be easily replaced with normal chips by disassembling and reassembling the clamp springs.

Abstract: A programmable analog switch which is capable of varying a resistance value by controlling the number of turned-on transistors included in a resistance device according to a program, includes first and second transmission control units for logically operating externally applied control signals and generating transmission control signals, first and second variable resistance control units for varying the resistance encountered by an input analog signal in accordance with the control signals, and a transmission unit connected to the resistance device and an attenuated analog transmission gate for transmitting the attenuated analog signal to the analog transmission gate in accordance with the transmission control signals outputted from the first and second transmission control units.