公开(公告)号：JPH05173658A

公开(公告)日：1993-07-13

申请号：JP10340392

申请日：1992-04-23

Applicant: SGS THOMSON MICROELECTRONICS

Inventor： FUABIO MARUCHIO ,  ENRIKO NOBARIINI ,  JIYORUJIYO ROTSUSHI

IPC: G05F3/22 ,  G05F3/30 ,  H03F1/30

Abstract: PURPOSE: To provide a device which compensates the decrease of emitter current caused by a reverse saturation current which becomes larger at a high temperature. CONSTITUTION: Diodes 11 and 12 which are connected in parallel with the base- emitter junctions of bipolar transistors 2 and 3 having collector areas and base areas and emitter areas forming the base-emitter junctions in an inverted constitution and have substantially same saturation currents are provided to the transistors 2 and 3. The diodes 11 and 12 are formed by using different bipolar transistors 11 and 12 which are the same as the transistors 2 and 3 to be compensated and the collectors and emitters of which are respectively connected to the bases and emitters of the transistors 2 and 3 and short-circuiting the emitters and bases of the transistors 11 and 12 with each other.

公开(公告)号：JPH01212016A

公开(公告)日：1989-08-25

申请号：JP32076888

申请日：1988-12-21

Applicant: SGS THOMSON MICROELECTRONICS

Inventor： FUABIO MARUCHIO ,  MARUKO MORETSURI ,  FURANSESUKO TORIKOORI

IPC: H03K4/06 ,  H03K4/02

Abstract: PURPOSE: To integrate the low-frequency triangular wave generator by forming the generator of a high-frequency pulse generator, an up/down counter having a counting-direction inverting circuit, and a D/A converter. CONSTITUTION: The high-frequency pulse generator 11 is included which is supplied with an input CK of the up/down pulse counter 12 that performs binary output and outputs an (n)th bit among (n) output bits and an inverted input S/D. The S/D is controlled with an output Q of a flip-flop inverting circuit 13 having inputs R(reset) and S(set) connected to the outputs of AND ports 14 and 15. The port 14 receives an (n) output U of the counter 12 and the port 15 receives its inverted output. The (n) output U of the counter 12 is received by the D/A converter 16 which converts the succession of the counting state of the counter 12 into a voltage having a nearly triangular staircase waveform. Consequently, a desired low-frequency triangular wave is obtained by using an element which can easily be built in an integrated circuit.

公开(公告)号：JPH0582160B2

公开(公告)日：1993-11-17

申请号：JP11385486

申请日：1986-05-20

Applicant: SGS THOMSON MICROELECTRONICS

Inventor： PIETORO MENITSUCHI ,  FUABIO MARUCHIO

IPC: H02P9/30