Patent ID: 6718830
Filing Date: 2004-04-13
Classification: G01L

Abstract:
A sensor chip having first, second, third, fourth, fifth, and sixth sensor nodes, the sensor chip comprising:a piezo-resistive bridge having first and second input nodes and first and second output nodes; a first conductive path connecting the first input node to the first sensor node; a second conductive path connecting the second input node to the second sensor node; a third conductive path connecting the first output node to the third sensor node; a fourth conductive path connecting the second output node to the fourth sensor node, wherein the fourth conductive path includes a leadout resistance, wherein a portion of the leadout resistance is formed as a light implant resistance, and wherein the remainder of the leadout resistance is formed as a heavy implant resistance; a fifth conductive path connecting the fourth sensor node to the fifth sensor node, wherein the fifth conductive path includes a bias resistance; and, a sixth conductive path connecting the fourth sensor node to the sixth sensor node, wherein the sixth conductive path includes a feedback resistance.