公开(公告)号：US09461584B2

公开(公告)日：2016-10-04

申请号：US14576535

申请日：2014-12-19

Applicant: STMicroelectronics International N.V.

Inventor： Gauri Mittal ,  Kallol Chatterjee ,  Pallavi Muktesh ,  Nitin Jain ,  Pradeep Kumar Badrathwal

IPC: H03B5/36

CPC classification number: H03B5/364 ,  H03B5/366 ,  H03B2200/0012 ,  H03B2200/0038

Abstract: A circuit includes an oscillator circuit to receive a bias current and generate an oscillating signal at an output node. A current differencing circuit subtracts a current at the output node from a reference current to generate a first current. In addition, a current mirroring circuit mirrors the first current to generate the bias current. An inverter stage is coupled to the output node, and includes an input branch configured to receive the oscillating signal and generate first and second control signals based upon the oscillating signal. At least one amplifying branch receives the first and second control signals and amplifies the first and second control signals. An output branch receives the amplified first and second control signals and generates an amplified version of the oscillating signal based upon the amplified first and second control signals.

Abstract translation: 电路包括用于接收偏置电流并在输出节点产生振荡信号的振荡器电路。 电流差分电路从参考电流中减去输出节点处的电流以产生第一电流。 此外，电流镜像电路反射第一电流以产生偏置电流。 逆变器级耦合到输出节点，并且包括被配置为接收振荡信号并基于振荡信号产生第一和第二控制信号的输入分支。 至少一个放大支路接收第一和第二控制信号并放大第一和第二控制信号。 输出分支接收放大的第一和第二控制信号，并且基于放大的第一和第二控制信号产生振荡信号的放大版本。

公开(公告)号：US20160181978A1

公开(公告)日：2016-06-23

申请号：US14576535

申请日：2014-12-19

Applicant: STMICROELECTRONICS INTERNATIONAL N.V.

Inventor： Gauri Mittal ,  Kallol Chatterjee ,  Pallavi Muktesh ,  Nitin Jain ,  Pradeep Kumar Badrathwal

IPC: H03B5/36

CPC classification number: H03B5/364 ,  H03B5/366 ,  H03B2200/0012 ,  H03B2200/0038

Abstract: A circuit includes an oscillator circuit to receive a bias current and generate an oscillating signal at an output node. A current differencing circuit subtracts a current at the output node from a reference current to generate a first current. In addition, a current mirroring circuit mirrors the first current to generate the bias current. An inverter stage is coupled to the output node, and includes an input branch configured to receive the oscillating signal and generate first and second control signals based upon the oscillating signal. At least one amplifying branch receives the first and second control signals and amplifies the first and second control signals. An output branch receives the amplified first and second control signals and generates an amplified version of the oscillating signal based upon the amplified first and second control signals.

Abstract translation: 电路包括用于接收偏置电流并在输出节点产生振荡信号的振荡器电路。 电流差分电路从参考电流中减去输出节点处的电流以产生第一电流。 此外，电流镜像电路反射第一电流以产生偏置电流。 逆变器级耦合到输出节点，并且包括被配置为接收振荡信号并基于振荡信号产生第一和第二控制信号的输入分支。 至少一个放大支路接收第一和第二控制信号并放大第一和第二控制信号。 输出分支接收放大的第一和第二控制信号，并且基于放大的第一和第二控制信号产生振荡信号的放大版本。

公开(公告)号：US08981817B2

公开(公告)日：2015-03-17

申请号：US13926748

申请日：2013-06-25

Applicant: STMicroelectronics International N.V. ,  STMicroelectronics (Crolles 2) SAS

Inventor： Vinod Kumar ,  Pradeep Kumar Badrathwal ,  Saiyid Mohammad Irshad Rizvi ,  Paras Garg ,  Kallol Chatterjee ,  Pierre Dautriche

IPC: H03K3/00

CPC classification number: H03K19/00384

Abstract: A circuit having a centralized PT compensation circuit to provide compensation signals to localized I/O blocks on the chip. Process variations and temperature variations tend to be approximately uniform across an integrated circuit chip. Thus, a single, centralized PT compensation circuit may be used instead of one PT compensation circuit per I/O section as with solutions of the past. Further, the PT compensation circuit may generate a digital code indicative of the effects of process and temperature. Further yet, each section of I/O block may have a local voltage compensation circuit to compensate the voltage variation of the I/O block. The voltage compensation circuit utilizes an independent reference voltage. The reference voltage is generated by the PT compensation circuit, which is placed centrally in the IC chip and hence any need to repeat the reference generation for each I/O block is eliminated.

Abstract translation: 具有集中PT补偿电路以向芯片上的局部I / O块提供补偿信号的电路。 整个集成电路芯片的工艺变化和温度变化趋向于大致均匀。 因此，与过去的解决方案一样，可以使用单个集中式PT补偿电路来代替每个I / O部分的一个PT补偿电路。 此外，PT补偿电路可以产生指示过程和温度的影响的数字代码。 此外，I / O块的每个部分可以具有用于补偿I / O块的电压变化的局部电压补偿电路。 电压补偿电路采用独立的参考电压。 参考电压由放置在IC芯片中央的PT补偿电路产生，因此不需要重复每个I / O块的参考生成。