公开(公告)号：ITTO960326D0

公开(公告)日：1996-04-24

申请号：ITTO960326

申请日：1996-04-24

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： BOSTICA BRUNO ,  PELLEGRINO PAOLO ,  PESANDO LUCA

IPC: H01L27/092 ,  H01L21/8238 ,  H01S5/042 ,  H01S5/068 ,  H01S5/40 ,  H04B10/04 ,  H04B10/06 ,  H04B10/142 ,  H04B10/152

Abstract: The circuit comprises bias and modulation current generators (T1...T6) for both p-type and n-type optical sources, and a pair of sources of control voltages (B, M) for the bias and modulation current generators, which obtain pairs of control voltages from an adjustable driving current. An external signal allows selecting, by means of a control logic (LC) and CMOS gates (P1...P6), the generators required by the source (LA). The circuit is made by using three pads of an integrated circuit, one for each control voltage source (B, M) and the third (D) comprising the current generators (T1...T6), the CMOS gates (P1...P6) and the control logic (LC).