-
公开(公告)号：ITVA20040005A1
公开(公告)日：2004-05-06
申请号：ITVA20040005
申请日：2004-02-06
Applicant: ST MICROELECTRONICS SA , ST MICROELECTRONICS SRL
Inventor： CALO' PIETRO ANTONIO PAOLO , SIRITO OLIVIER PHILIPPE
-
公开(公告)号：ITVA20040006A1
公开(公告)日：2004-05-11
申请号：ITVA20040006
申请日：2004-02-11
Applicant: ST MICROELECTRONICS SA , ST MICROELECTRONICS SRL
Inventor： SIRITO OLIVIER PHILIPPE
-
公开(公告)号：FR2800939B1
公开(公告)日：2002-01-25
申请号：FR9914055
申请日：1999-11-09
Applicant: ST MICROELECTRONICS SA
Inventor： SIRITO OLIVIER PHILIPPE
Abstract: The loop has a phase comparator (3) providing logic signal to control the charge pump (16), and a charge feedback circuit (31) also receiving a comparator input to provide a logic signal to the pump. The circuit includes a detector (30) for identifying a current threshold value, which is representative of the current delivered by the pump. The detector output is applied to the feedback circuit, in a manner limiting the duration of the feedback charge.
-
公开(公告)号：FR2809834A1
公开(公告)日：2001-12-07
申请号：FR0006913
申请日：2000-05-30
Applicant: ST MICROELECTRONICS SA
Inventor： SIRITO OLIVIER PHILIPPE
Abstract: The current source comprises a driver branch (114) with a resistor (118) for the current setting, at least one slave branch (116), and a mirror-current (120) with transistors (121, 122) coupling the two branches. The current source also comprises a transistor (151) as the means for injecting a current proportional to that in the driver branch into the resistor (118), and a transistor (152) as the means for injecting a current proportional to that in the slave branch into a resistor (142) of degeneration of the mirror-current transistor (122). The transistor (151) has the emitter surface greater than that of the transistor (121) of the driver branch of the mirror-current. The transistor (152) connected to the degeneration resistor (142) of the slave branch forms a mirror-current with a source transistor (112) connected in the slave branch. The transistor (152) has the emitter surface greater than that of the source transistor (112) of the slave branch.
-
公开(公告)号：FR2800939A1
公开(公告)日：2001-05-11
申请号：FR9914055
申请日：1999-11-09
Applicant: ST MICROELECTRONICS SA
Inventor： SIRITO OLIVIER PHILIPPE
Abstract: The loop has a phase comparator (3) providing logic signal to control the charge pump (16), and a charge feedback circuit (31) also receiving a comparator input to provide a logic signal to the pump. The circuit includes a detector (30) for identifying a current threshold value, which is representative of the current delivered by the pump. The detector output is applied to the feedback circuit, in a manner limiting the duration of the feedback charge.
-
Patent Agency Ranking
公开(公告)号：FR2916109A1
公开(公告)日：2008-11-14
申请号：FR0754997
申请日：2007-05-11
Applicant: ST MICROELECTRONICS SA
Inventor： SIRITO OLIVIER PHILIPPE , CALO PIETRO , CHIRICOSTA MARIO
Abstract: L'invention concerne un circuit récepteur comprenant une pluralité d'amplificateurs (204, 206, 208) couplés en série, un premier des amplificateurs recevant un signal d'entrée et chacun des amplificateurs fournissant un signal amplifié ; une pluralité de comparateurs (210, 212, 214), chacun étant couplé à la sortie de l'un des amplificateurs et comprenant une entrée pour recevoir le signal amplifié ; un circuit d'identification de signal (216, 218, 220) couplé aux sorties des comparateurs et agencé pour déterminer si les sorties des comparateurs représentent valablement des données ; et un circuit de sélection de signal (222) agencé pour sélectionner le meilleur signal provenant des comparateurs en fonction de la validité des sorties des comparateurs.
-
公开(公告)号：FR2809833B1
公开(公告)日：2002-11-29
申请号：FR0006908
申请日：2000-05-30
Applicant: ST MICROELECTRONICS SA
Inventor： SIRITO OLIVIER PHILIPPE
Abstract: A current source with low temperature dependence includes a reference current source and a current mirror for copying the reference source current to at least one output branch. The reference current source and the current mirror may have opposite coefficients of temperature dependence and the current mirror may be a weighted mirror. The present invention is particularly applicable to the manufacture of integrated circuits.
-
公开(公告)号：FR2792475B1
公开(公告)日：2001-08-17
申请号：FR9904994
申请日：1999-04-16
Applicant: ST MICROELECTRONICS SA
Inventor： SIRITO OLIVIER PHILIPPE
Abstract: A comparator of a first digital value of n bits having CMOS voltage levels with a second digital value of n bits having ECL, or CML voltage levels, including a decoder in CMOS technology provided to provide 2n CMOS signals, each of which corresponds to a different product of n bits, each of the n bits being a respective bit of the first digital value or its complement; 2n AND gates in ECL or CML technology respectively associated with the 2n CMOS signals, connected to implement an OR function of 2n ECL or CML signals, each of which corresponds to a different product of n bits taken from among the bits of the second value or their complements, according to the same choice as for the product of n bits of the respective CMOS signal; and means for deactivating the AND gates associated with the CMOS signals to 0.
-
公开(公告)号：FR2791840A1
公开(公告)日：2000-10-06
申请号：FR9904200
申请日：1999-03-30
Applicant: ST MICROELECTRONICS SA
Inventor： SIRITO OLIVIER PHILIPPE , DUGAS CHRISTOPHE
Abstract: On transmit, the VCO (16) output is modulated by a data signal (Txin) applied to the PLL via an amplifier whose gain, and hence the FSK deviation, is adjusted by a variable resistor (28). On receive, the unmodulated VCO provides in-phase and quadrature outputs to two mixers (42, 43) to generate I and Q receive channels. These are lowpass filtered (45, 46), limited (48, 49) and fed to an FSK demodulator (51), one receive channel producing a test output (52) before demodulation. To set the transmitter deviation, transmit mode is selected, a standard data signal applied to modulate the VCO and a carrier at the nominal frequency is applied to the receiver antenna terminal (38). The deviation control is then adjusted until the desired difference frequency is measured at the test output. An Independent claim is included for a method of adjusting an FSK transmitter/receiver circuit of the type described in the invention.
-
公开(公告)号：FR2809833A1
公开(公告)日：2001-12-07
申请号：FR0006908
申请日：2000-05-30
Applicant: ST MICROELECTRONICS SA
Inventor： SIRITO OLIVIER PHILIPPE
Abstract: The current source comprises a reference current source (102), and a mirror-current (104) for copying the current of the reference current source to one or more output branches (106, 108), where the first branch (106) delivers current to the reference source and the second branch (108) is connected to a load (110). The reference current source and the mirror-current have opposite coefficients of the dependence on temperature, and the mirror-current is level-headed. The reference current source has a negative dependence on temperature, and the mirror-current has a positive dependence on temperature. The reference current source (102) is of the base-emitter reference voltage type, and comprises a control transistor (126) based as a diode and connected to a supply transistor (146) in the output branch (106) of the mirror-current. The mirror-current (104) comprises the first transistor (130) in the control branch connected to the reference current source, and one or more second transistors (146, 148) connected in each output branch; the first transistor (130 is connected in series with a leveling resistor (136). The second transistor (146, 148) of the mirror-current has the emitter surface greater than that of the first transistor (130).
-
-
-
-
-
-
-
-
-
Search Results
17
records
(took 0.031 seconds)
