CAPACITOR ARRAY AND A/D CONVERTER

• Main Authors: SUGIMOTO FUMITOSHI, ARIGA KENTA
• Format: Patent
• Language: English; Japanese
• Published: 24.08.2015
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

PROBLEM TO BE SOLVED: To prevent the relative precision of a capacitance value of a capacitor group included in a capacitor array from being deteriorated by a parasitic capacitor.SOLUTION: A capacitor array 12 includes a plurality of capacitors, which are provided while being spaced apart from each other, each including a first electrode 41 and a second electrode 42 provided in at least one layer. First wiring 460 is connected to each of the first electrodes in the plurality of capacitors and provided in any layer so as to pass a clearance between the plurality of capacitors. Second wiring 450 is connected to each of the second electrodes in the plurality of capacitors and provided in a layer that is spaced apart from the layer in which the first wiring is provided, by at least one layer so as to pass the clearance between the plurality of capacitors. A first conductor 50 extends in the clearance between the plurality of capacitors so as to be interposed between the first wiring and the second wiring in a layer between the layer where the first wiring is provided and the layer where the second wiring is provided. 【課題】寄生キャパシタに起因するキャパシタアレイに含まれるキャパシタ群の容量値の相対精度の劣化を防止する。【解決手段】キャパシタアレイ12は、少なくとも１つの層に設けられた第１の電極41および第２の電極42を各々が有し、相互に間隙を隔てて設けられた複数のキャパシタを含む。第１の配線460は、複数のキャパシタの第１の電極の各々に接続され、いずれかの層に複数のキャパシタ相互間の間隙を通過するように設けられている。第２の配線450は、複数のキャパシタの第２の電極の各々に接続され、第１の配線が設けられた層に対して少なくとも１層分の間隙を隔てて離間した層において複数のキャパシタ相互間の間隙を通過するように設けられている。第１の導電体50は、第１の配線が設けられた層と第２の配線が設けられた層との間の層に第１の配線と第２の配線との間に介在するように複数のキャパシタ相互間の間隙に延在している。【選択図】図４