公开(公告)号：US5872504A

公开(公告)日：1999-02-16

申请号：US782777

申请日：1997-01-13

Applicant: Norbert Greitschus ,  Hans-Gunter Zimmer

Inventor： Norbert Greitschus ,  Hans-Gunter Zimmer

IPC: H01L27/04 ,  H01L21/822 ,  H01L27/08 ,  H01C1/01

CPC classification number: H01L27/0802

Abstract: A semiconductor structure for creating resistor networks, particularly ladder networks, has resistive sections made of semiconductor material and metal contact areas. A continuous semiconducting resistor strip is provided as a primary arm. Along this continuous primary arm, metal contact areas which contact the resistor strip at the side are provided in accordance with the desired resistor ratio and in order to form corresponding series resistors. In a ladder network, shunt arms have one end connected directly to the long side of the primary arm via the semiconductor material. At the other end of each of the shunt arms, a respective metal contact area is provided.

Abstract translation: 用于产生电阻网络，特别是梯形网络的半导体结构具有由半导体材料和金属接触区域制成的电阻部分。 提供连续的半导体电阻条作为主臂。 沿着该连续的主臂，根据期望的电阻比率提供与侧面上的电阻器条接触的金属接触区域，以便形成相应的串联电阻器。 在梯形网络中，分流臂的一端通过半导体材料直接连接到主臂的长边。 在每个分流臂的另一端处，设置相应的金属接触区域。

公开(公告)号：US5805029A

公开(公告)日：1998-09-08

申请号：US861605

申请日：1997-05-22

Applicant: Ulrich Theus ,  Norbert Greitschus

Inventor： Ulrich Theus ,  Norbert Greitschus

IPC: H03B1/00 ,  H03B5/36 ,  H03L7/099

CPC classification number: H03B5/364 ,  H03B2201/0266

Abstract: The invention relates to a digitally adjustable crystal oscillator having a quartz crystal and a monolithic integrated oscillator circuit including a series combination of a first frequency-adjusting capacitor C1 and a second frequency-adjusting capacitor C2 connected in parallel with the quartz crystal and comprising parallel-connected first capacitance stages and parallel-connected second capacitance stages, respectively, and an inverter circuit connected in parallel with the quartz crystal and comprising a feedback resistor R.sub.K, the output of the innverter circuit being connected to a load resistor. The inverter circuit comprises parallel-connected inverter stages, and switching elements are provided within the inverter stages and cqapacitor stages in such a way that a respective one of the inverter stages as well as a first capacitance stage C.sub.1i and a second capacitance stage C.sub.2i are switchable into or out of circuit by means of a control signal I.sub.i.

Abstract translation: 本发明涉及具有石英晶体和单片集成振荡电路的数字可调晶体振荡器，它包括与石英晶体并联连接的第一调频电容器C1和第二调频电容器C2的串联组合， 连接的第一电容级和并联的第二电容级，以及与石英晶体并联连接并包括反馈电阻器RK的逆变器电路，该变流器电路的输出连接到负载电阻器。 逆变器电路包括并联逆变级，并且在逆变器级和cqapitor级中设置开关元件，使得各个反相器级以及第一电容级C1i和第二电容级C2i可切换 通过控制信号Ii进入或断开电路。