公开(公告)号：DE3276513D1

公开(公告)日：1987-07-09

申请号：DE3276513

申请日：1982-11-26

Applicant: IBM ,  IBM FRANCE

Inventor： DELAPORTE FRANCOIS-XAVIER ,  LEBESNERAIS GERARD MAXIME ,  PANTANI JEAN-PIERRE

IPC: H01L27/04 ,  H01L21/822 ,  H01L21/8222 ,  H01L27/02 ,  H01L27/06 ,  H01L29/8605 ,  H03K19/0175 ,  H01L29/86

Abstract: A monolithically integrated resistive attenuator is autobiased from an input bipolar signal the amplitude of which is higher than the integrated circuit voltage supplies. The resistive attenuator is arranged in a first pocket formed in an epitaxial layer, and is connected between the input bipolar signal and ground. An intermediate tap produces an output signal. A diode and capacitor are formed in a second pocket. The diode is connected between the input bipolar signals and the epitaxial layer while the capacitor is connected between the epitaxial layer and the isolation walls thereof. The positive half-periods of the input bipolar signal charges the capacitor, which in turn biases the epitaxial layers. The attenuator, therefore, can be monolithically integrated into a silicon chip and remain isolated for all values of the input bipolar signal. The output signal produced by the attenuator is less than the integrated circuit voltage supplies so that the circuits driven by the output signal can be integrated without difficulties.

公开(公告)号：DE2720653A1

公开(公告)日：1977-12-01

申请号：DE2720653

申请日：1977-05-07

Applicant: IBM

Inventor： DELAPORTE FRANCOIS XAVIER ,  HORNUNG ROBERT MICHAEL ,  LAMOUROUX ANNE-MARIE ,  LEBESNERAIS GERARD MAXIME ,  NUEZ JEAN-PAUL JULES

IPC: H01L27/04 ,  H01L21/326 ,  H01L21/822 ,  H01L27/08 ,  H01L29/8605 ,  H01L23/56

公开(公告)号：DE3065192D1

公开(公告)日：1983-11-10

申请号：DE3065192

申请日：1980-10-29

Applicant: IBM

Inventor： DELAPORTE FRANCOIS XAVIER ,  LEBESNERAIS GERARD MAXIME ,  PANTANI JEAN-PIERRE

IPC: H03K5/02 ,  H03K17/082 ,  H03K19/018 ,  H03K19/00 ,  H03K17/08

Abstract: An interface circuit for exchanging digital signals between two pieces of data processing equipment is provided in integrated form in accordance with international standards, such as EIA Standards. This is achieved through modification of an operational amplifier to adapt its use to the conditions and requirements of interface circuits.

公开(公告)号：DE2841755A1

公开(公告)日：1979-04-05

申请号：DE2841755

申请日：1978-09-26

Applicant: IBM

Inventor： HORNUNG ROBERT MICHEL ,  LEBESNERAIS GERARD MAXIME

IPC: G11C11/411 ,  H01L21/331 ,  H01L21/8226 ,  H01L27/02 ,  H01L27/082 ,  H01L29/73 ,  H03K3/288 ,  H03K19/091 ,  H03M1/00 ,  H03K19/08 ,  H01L27/04 ,  H03K3/286