公开(公告)号：US10096964B1

公开(公告)日：2018-10-09

申请号：US15605829

申请日：2017-05-25

Applicant: INPHI CORPORATION

Inventor： Karim Abdelhalim ,  Jorge Pernillo ,  Halil Cirit ,  Michael Le

IPC: H01S3/09 ,  H03M1/08 ,  H01S3/0933 ,  H01S3/091 ,  H01S5/042

Abstract: The present invention relates to telecommunication techniques and integrated circuit (IC) devices. In a specific embodiment, the present invention provides a laser deriver apparatus that includes a main DAC section and a mini DAC section. The main DAC section processes input signal received from a pre-driver array and generates an intermediate output signal. The mini DAC section provides a compensation signal to reduce distortion of the intermediate output signal. The intermediate output signal is coupled to output terminals through a cascode section and/or a T-coil section. There are other embodiments as well.

公开(公告)号：US10574023B2

公开(公告)日：2020-02-25

申请号：US16109605

申请日：2018-08-22

Applicant: INPHI CORPORATION

Inventor： Karim Abdelhalim ,  Jorge Pernillo ,  Halil Cirit ,  Michael Le

IPC: H01S3/09 ,  H01S3/0933 ,  H01S3/091 ,  H03M1/10 ,  H03M1/08 ,  H01S5/042 ,  H03M1/68

Abstract: The present invention relates to telecommunication techniques and integrated circuit (IC) devices. In a specific embodiment, the present invention provides a laser deriver apparatus that includes a main DAC section and a mini DAC section. The main DAC section processes input signal received from a pre-driver array and generates an intermediate output signal. The mini DAC section provides a compensation signal to reduce distortion of the intermediate output signal. The intermediate output signal is coupled to output terminals through a cascode section and/or a T-coil section. There are other embodiments as well.

公开(公告)号：US10148357B1

公开(公告)日：2018-12-04

申请号：US15604196

申请日：2017-05-24

Applicant: INPHI CORPORATION

Inventor： Halil Cirit ,  Karthik Gopalakrishnan ,  Karim Abdelhalim ,  Jorge Pernillo ,  Lawrence Tse

IPC: H04B10/50 ,  H04B10/27

Abstract: Non-ideal downstream loading of a differential driver in a single ended circuit driving a communications laser—e.g., Electro absorption Modulated Laser (EML)—may be compensated by deploying a second matching network at the non-functional (terminated) driver output node. Certain embodiments may further compensate for distortion arising from circuit non-ideality, by introducing a laser replica downstream of the second matching network to mimic electrical properties of the laser. Embodiments may sufficiently compensate for downstream circuit non-ideality to allow replacing the bulky choke inductor of a bias tee, with a resistor. Substituting a resistor for a more complex inductor structure can simplify design and fabrication of the single-ended driver circuit, and also reduce footprint by eliminating area formerly occupied by the choke inductor. Embodiments may be particularly suited to bridge integration with other system components undergoing design migration toward double-ended modulator circuit architectures featuring a differential driver.

公开(公告)号：US10374842B2

公开(公告)日：2019-08-06

申请号：US16212169

申请日：2018-12-06

Applicant: INPHI CORPORATION

Inventor： Karim Abdelhalim ,  Michael Le ,  Haidang Lin

IPC: H04L25/03 ,  H03K19/00

Abstract: The present invention relates to data communication techniques and integrated circuit devices. More specifically, embodiments of the present invention provide an input buffer module that utilizes one or more equalization elements. The input buffer module includes an array of inverters arranged in a series. An equalization element is configured in series relative to a segment of the array of inverters. The resistance value of the equalization element is predetermined based on a delay associated with the segment of the array of inverters. There are other embodiments as well.

公开(公告)号：US10886692B2

公开(公告)日：2021-01-05

申请号：US16743611

申请日：2020-01-15

Applicant: INPHI CORPORATION

Inventor： Karim Abdelhalim ,  Jorge Pernillo ,  Halil Cirit ,  Michael Le

IPC: H01S3/09 ,  H01S3/0933 ,  H01S3/091 ,  H03M1/10 ,  H03M1/08 ,  H01S5/042 ,  H03M1/68

Abstract: The present invention relates to telecommunication techniques and integrated circuit (IC) devices. In a specific embodiment, the present invention provides a laser deriver apparatus that includes a main DAC section and a mini DAC section. The main DAC section processes input signal received from a pre-driver array and generates an intermediate output signal. The mini DAC section provides a compensation signal to reduce distortion of the intermediate output signal. The intermediate output signal is coupled to output terminals through a cascode section and/or a T-coil section. There are other embodiments as well.

公开(公告)号：US10187230B1

公开(公告)日：2019-01-22

申请号：US15699882

申请日：2017-09-08

Applicant: INPHI CORPORATION

Inventor： Karim Abdelhalim ,  Michael Le ,  Haidang Lin

IPC: H04L25/03 ,  H03K19/00

Abstract: The present invention relates to data communication techniques and integrated circuit devices. More specifically, embodiments of the present invention provide an input buffer module that utilizes one or more equalization elements. The input buffer module includes an array of inverters arranged in a series. An equalization element is configured in series relative to a segment of the array of inverters. The resistance value of the equalization element is predetermined based on a delay associated with the segment of the array of inverters. There are other embodiments as well.