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18 records (took 0.024 seconds)

    2.
    发明专利
    未知

    公开(公告)号：DE69813006D1

    公开(公告)日：2003-05-08

    申请号：DE69813006

    申请日：1998-11-10

    Applicant: ERICSSON TELEFON AB L M

    Inventor： BJOERK CHRISTIAN ,  LANTZ MARTIN ,  GAERDENFORS TORBJOERN ,  MARHOLEV BOJKO

    IPC: H03B1/00 ,  H03B5/12

    Abstract: A monolithic high frequency voltage controlled oscillator trimming circuit includes a plurality of capacitance loops selectively connected between a first and second differential input of a voltage oscillator active network. A plurality of diodes, connected in series with the respective plurality of capacitance loops, selectively connect respective capacitance loops between the first and second differential input when forward biased. In a similar fashion, the plurality of diodes selectively disconnect the respective capacitance loops from the first and second differential input when reverse biased. A controller applies a forward biasing voltage to the diode of the selected capacitance loop to connect the capacitance loop to the active network of the voltage controlled oscillator and applies a reverse biasing voltage to the diode of the selected capacitance loop to disconnect the capacitance loop from the active network. The diodes used in the capacitance loops form a switch operable at high frequencies and are formed from a bipolar complementary metal oxide semiconductor electro-static discharge protection diode.

    ELECTRONIC SYSTEM HAVING A CHIP INTEGRATED POWER-ON RESET CIRCUIT WITH GLITCH SENSOR
    5.
    发明专利
    ELECTRONIC SYSTEM HAVING A CHIP INTEGRATED POWER-ON RESET CIRCUIT WITH GLITCH SENSOR 未知

    公开(公告)号：MY120742A

    公开(公告)日：2005-11-30

    申请号：MYPI9802022

    申请日：1998-05-06

    Applicant: ERICSSON TELEFON AB L M

    Inventor： MARHOLEV BOJKO ,  GARDENFORS TORBJORN ,  BJORK CHRISTIAN

    IPC: G06F1/24 ,  G06F11/14 ,  H03L7/00 ,  H03K17/22

    Abstract: A POWER-ON RESET CIRCUIT WITH GLITCH SENSING CAPABILITIES IS FORMED AS PART OF THE SAME INTEGRATED CIRCUIT CHIP CONTAINING OTHER LOGICAL CIRCUITS. A PORT INCLUDED IN THE INTEGRATED CIRCUIT CHIP ENABLES A POWER-ON RESET SIGNAL GENERATED BY THE INTEGRATED POWER-ON RESET CIRCUIT TO BE OUTPUT FROM THE CHIP AND APPLIED TO OTHER CHIPS INSTALLED IN A SINGLE CHIP OR MULTI-CHIP ELECTRONIC SYSYEM. THE POWER-ON RESET CIRCUIT COMPARES A CAPACITOR STORED RESET VOLTAGE TO A REFERENCE VOLTAGE AND OUTPUTS THE POWER-ON RESET SIGNAL WHEN THE RESET VOLTAGE FALLS BELOW THE REFERENCE VOLTAGE. STORAGE OF THE RESETVOLTAGE BY THE CAPACITOR IS CONTROLLED BY A GLITCH SENSOR WHICH DETECTS CHANGES IN VOLTAGE PROVIDED BY A POWER SUPPLY IN EXCESS OF A GIVEN THRESHOLD AND, IN RESPONSE THERETO, TRIGGERS A CAPACITOR DISCHARGE. THIS CAUSES THE RESET VOLTAGE TO FALL BELOW THE REFERENCE VOLTAGE, AND THE POWER-ON RESET SIGNAL TO BE OUTPUT. FURTHERMORE, FOR SYNCHRONOUSLY OPERATED SYSTEMS, THE OUTPUT POWER-ON RESET SIGNAL IS SYNCHRONIZED WITH AN EDGE OF AN OUTPUT CLOCK SIGNAL.

    7.
    发明专利
    未知

    公开(公告)号：BR9814969A

    公开(公告)日：2000-10-03

    申请号：BR9814969

    申请日：1998-11-10

    Applicant: ERICSSON TELEFON AB L M

    Inventor： BJOERK CHRISTIAN ,  LANTZ MARTIN ,  GAERDENFORS TORBJOERN ,  MARHOLEV BOJKO

    IPC: H03B1/00 ,  H03B5/12

    Abstract: A monolithic high frequency voltage controlled oscillator trimming circuit includes a plurality of capacitance loops selectively connected between a first and second differential input of a voltage oscillator active network. A plurality of diodes, connected in series with the respective plurality of capacitance loops, selectively connect respective capacitance loops between the first and second differential input when forward biased. In a similar fashion, the plurality of diodes selectively disconnect the respective capacitance loops from the first and second differential input when reverse biased. A controller applies a forward biasing voltage to the diode of the selected capacitance loop to connect the capacitance loop to the active network of the voltage controlled oscillator and applies a reverse biasing voltage to the diode of the selected capacitance loop to disconnect the capacitance loop from the active network. The diodes used in the capacitance loops form a switch operable at high frequencies and are formed from a bipolar complementary metal oxide semiconductor electro-static discharge protection diode.

    MONOLITHIC HIGH FREQUENCY VOLTAGE CONTROLLED OSCILLATOR TRIMMING CIRCUIT
    8.
    发明专利
    MONOLITHIC HIGH FREQUENCY VOLTAGE CONTROLLED OSCILLATOR TRIMMING CIRCUIT 未知

    公开(公告)号：MY118201A

    公开(公告)日：2004-09-30

    申请号：MYPI9805032

    申请日：1998-11-05

    Applicant: ERICSSON TELEFON AB L M

    Inventor： CHRISTIAN BJ0RK ,  LANTZ MARTIN ,  GARDENFORS TORBJ0RN ,  MARHOLEV BOJKO

    IPC: G01R23/00 ,  H03B5/12 ,  H03B1/00

    Abstract: A MONOLITHIC HIGH FREQUENCY VOLTAGE CONTROLLED OSCILLATOR TRIMMING CIRCUIT INCLUDES A PLURALITY OF CAPACITANCE LOOPS (140) SELECTIVELY CONNECTED BETWEEN A FIRST (120) AND SECOND (130) DIFFERENTIAL INPUT OF A VOLTAGE OSCILLATOR ACTIVE NETWORK (110). A PLURALITY OF DIODES (159, 160), CONNECTED IN SERIES WITH THE RESPECTIVE PLURALITY OF CAPACITANCE LOOPS (140), SELECTIVELY CONNECT RESPECTIVE CAPACITANCE LOOPS (140) BETWEEN THE FIRST (120) AND SECOND (130) DIFFERENTIAL INPUT WHEN FORWARD BIASED. IN A SIMILAR FASHION, THE PLURALITY OF DIODES (159, 160) SELECTIVELY DISCONNECT THE RESPECTIVE CAPACITANCE LOOPS (140) FROM THE FIRST (120) AND SECOND (130) DIFFERENTIAL INPUT WHEN REVERSE BIASED. A CONTROLLER (180) APPLIES A FORWARD BIASING VOLTAGE TO THE DIODE (159, 160) OF THE SELECTED CAPACITANCE LOOP (140) TO CONNECT THE CAPACITANCE LOOP (140) TO THE ACTIVE NETWORK (110) OF THE VOLTAGE CONTROLLED OSCILLATOR AND APPLIES A REVERSE BIASING VOLTAGE TO THE DIODE (159, 160) OF THE SELECTED CAPACITANCE LOOP (140) TO DISCONNECT THE CAPACITANCE LOOP (140) FROM THE ACTIVE NETWORK (110). THE DIODES (159, 160) USED IN THE CAPACITANCE LOOPS (140) FORM A SWITCH OPERABLE AT HIGH FREQUENCIES AND ARE FORMED FROM A BIPOLAR COMPLEMENTARY METAL OXIDE SEMICONDUCTOR ELECTRO-STATIC DISCHARGE PROTECTION DIODE

    10.
    发明专利
    未知

    公开(公告)号：NO20002264L

    公开(公告)日：2000-05-18

    申请号：NO20002264

    申请日：2000-04-28

    Applicant: ERICSSON TELEFON AB L M

    Inventor： BJOERK CHRISTIAN ,  LANTZ MARTIN ,  GORDENFORS TORBJOERN ,  MARHOLEV BOJKO

    IPC: H03B5/12 ,  H03B1/00

    Abstract: A monolithic high frequency voltage controlled oscillator trimming circuit includes a plurality of capacitance loops selectively connected between a first and second differential input of a voltage oscillator active network. A plurality of diodes, connected in series with the respective plurality of capacitance loops, selectively connect respective capacitance loops between the first and second differential input when forward biased. In a similar fashion, the plurality of diodes selectively disconnect the respective capacitance loops from the first and second differential input when reverse biased. A controller applies a forward biasing voltage to the diode of the selected capacitance loop to connect the capacitance loop to the active network of the voltage controlled oscillator and applies a reverse biasing voltage to the diode of the selected capacitance loop to disconnect the capacitance loop from the active network. The diodes used in the capacitance loops form a switch operable at high frequencies and are formed from a bipolar complementary metal oxide semiconductor electro-static discharge protection diode.

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