发明名称 |
Electro-optical modulator interface |
摘要 |
A relatively high-speed, high-efficiency CMOS two branch driver core that may operate under relatively low supply voltage may include thin oxide CMOS transistors configured to generate rail-to-rail output swings larger than twice a supply voltage and without exceeding safe operating area limits. Each of the two branches may include two stacked CMOS inverter pairs configured to drive a respective load capacitance coupled between respective CMOS inverter outputs, in phase opposition to the other branch. A pre-driver circuit input with a differential modulating signal may output two synchronous differential voltage drive signals of a swing of half of the supply voltage and DC-shifted by half of the supply voltage with respect to each other and that may be applied to the respective CMOS inverter inputs of the two branches. |
申请公布号 |
US9229250(B2) |
申请公布日期 |
2016.01.05 |
申请号 |
US201314043547 |
申请日期 |
2013.10.01 |
申请人 |
STMICROELECTRONICS S.R.L. |
发明人 |
Minoia Gabriele;Galeone Salvatore;Temporiti Milani Enrico Stefano |
分类号 |
H03K19/0175;G02F1/01;H03K19/0185;G02F1/225 |
主分类号 |
H03K19/0175 |
代理机构 |
Allen, Dyer, Doppelt, Milbrath & Gilchrist, P.A. |
代理人 |
Allen, Dyer, Doppelt, Milbrath & Gilchrist, P.A. |
主权项 |
1. An integrated electro-optical modulator interface comprising:
a two-branch output stage comprising a plurality of thin oxide CMOS transistors configured to generate rail-to-rail output swings larger than twice a nominal limit of a supply voltage of said plurality of thin oxide CMOS transistors, each branch of said two-branch output stage comprising two stacked CMOS inverter pairs from among said plurality of thin oxide CMOS transistors; said two stacked CMOS inverter pairs of a given branch being configured to drive a respective load capacitance, in phase opposition to the other branch; and a pre-driver circuit configured to receive a differential modulating signal and output, to respective inputs of said two stacked CMOS inverters, two synchronous differential voltage drive signals having a swing of half the supply voltage and being DC-shifted by half of the supply voltage with respect to each other. |
地址 |
Agrate Brianza (MB) IT |