公开(公告)号：JPH05206758A

公开(公告)日：1993-08-13

申请号：JP20110592

申请日：1992-07-28

Applicant: SGS THOMSON MICROELECTRONICS ,  MARELLI AUTRONICA

Inventor： MIKERANJIERO MATSUTSUUKO ,  BANI PORETSUTO ,  MARUKO MORETSURI

IPC: G01N27/409 ,  H03F1/08 ,  H03F3/34 ,  H03F3/347 ,  H03F3/45

Abstract: PURPOSE: To provide an amplifier for measurement which can easily be integrated to the same chip as the amplifier by enabling the of frequency compensation with the small capacitance without using any external capacitance for compensation. CONSTITUTION: This amplifier A is provided with 1st and 2nd input transistors Q1 and Q2 connected to respective 1st and 2nd feedback amplifier circuits A1 and A2 coupled to respective capacitors C2 and C1 for frequency compensation. The 2nd feedback amplifier circuit A2 has a double stage configuration and is provided with one internal capacitor CX for compensation. These three capacitors for frequency compensation can have small numerical values and therefore, they can be easily integrated into the same chip as the amplifier A. This amplifier can be used especially as an interface between the oxygen sensor electronic controllers of zirconium dioxide having different ground conductors GND1 and GND0.

公开(公告)号：JPH0376149A

公开(公告)日：1991-04-02

申请号：JP15561390

申请日：1990-06-15

Applicant: SGS THOMSON MICROELECTRONICS

Inventor： MARUKO MORETSURI ,  FUOOBIO MARUCHIOO ,  BURUUNO KABATSURI

IPC: H01L27/04 ,  G05F1/10 ,  H01L21/822 ,  H01L27/06 ,  H02H3/20 ,  H02H9/04

Abstract: PURPOSE: To obtain an integrated circuit protective device which can be implemented using integration technology by providing a Zener diode voltage limiter having a breakdown voltage preset lower than a maximum level being sustained by a circuit under closed state, and an extinction circuit for controlling the opening of the protected circuit. CONSTITUTION: The protective device is connected with a power supply line 50 for an integrated circuit to be protected and comprises a Zener diode voltage limiter 1, as a whole. The limiter comprises a group of three transistors 2, 3, 4 connected, respectively, with connectors which are connected with the power supply line 50. The transistor 2 has, on one side thereof, a base connected with the power supply line through a series Zener diode 5 having a breakdown voltage lower than a maximum voltage being sustained by an integrated circuit 30 under closed circuit state. A Zener diode 10 having a breakdown voltage lower than a maximum voltage being sustained by the integrated circuit under open circuit state is connected with the input to the integrated circuit 30 in parallel with the voltage limiter 1. An extinction circuit 20 having a preset delay T is preset at the input to the voltage limiter 1.

公开(公告)号：JPH06216321A

公开(公告)日：1994-08-05

申请号：JP27371392

申请日：1992-09-17

Applicant: SGS THOMSON MICROELECTRONICS

Inventor： FURANKO PEREGURIINI ,  MARUKO MORETSURI ,  ATOSU KANKURIINI

IPC: H01L27/04 ,  H01L21/822 ,  H01L27/02 ,  H01L27/06 ,  H01L29/78 ,  H03K17/08 ,  H03K19/003 ,  H01L29/784

Abstract: PURPOSE: To provide a circuitry, wherein the amplification effect of a parasitic transistor specific to leakage current specific to a specific ESD protective structure is virtually zeroed, unlike conventional protective structure of integrated circuits, wherein damages to pins or the like due to voltage spike cannot be fully avoided and leakage current may exceed allowable ranges. CONSTITUTION: A protective structure containing a pair of discharge elements, for example, Zener diodes, Z1 and Z2, facing opposite to each other, series- connected between a pin and ground and a bias element D1 connected between the interconnecting nodes between the discharge elements and a supply voltage node Vx , is formed.

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：JPH05108173A

公开(公告)日：1993-04-30

申请号：JP4135192

申请日：1992-02-27

Applicant: SGS THOMSON MICROELECTRONICS

Inventor： BANNI PORETSUTO ,  MARUKO MORETSURI ,  BURUNO MURARI

IPC: G05F1/56 ,  G05F1/569 ,  G05F1/59 ,  H02J9/06

Abstract: PURPOSE: To provide a voltage regulator with extremely high reliability and long useful life designed in order to reduce interference at an output end resulted from the switching of the power source element of 9T1 adjuster to the minimum. CONSTITUTION: A voltage (VA') of a capacitor and an input voltage (VA) are detected, and as long as the input voltage is more than two applied threshold values (VTH1 , and VTH2 ), both switches 16 and 19 are held to be on. When the input voltage is higher than the capacitor voltage (VA>VA') and smaller than the first threshold (VA