专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH10190364A LOW NOISE ARRANGEMENT FOR AMPLIFIER 失效
公开(公告)号：JPH10190364A
公开(公告)日：1998-07-21
申请号：JP29056197
申请日：1997-10-08
申请人： DOLPHIN INTEGRATION SA
发明人： COMPAGNE ERIC
IPC分类号： H03F1/26 , H03F1/34 , H03F3/45
摘要： PROBLEM TO BE SOLVED: To provide an integration arrangement realized from an amplifier which suppresses the influence of an output signal against noise to a minimum and has a high gain by containing main amplifiers and a means for generating floating reference voltage for adding an input signal to the first input terminal of the main amplifier and making reference voltage to arrangement which is servo-controlled by the equivalent input noise of the main amplifier. SOLUTION: The main amplifiers 1 and 1' and the means 5 for generating floating reference voltage VG for adding one input signal V' to one first input terminal E- or E in the main amplifiers in a prescribed period are contained. The reference voltage VG is arranged so that it is servo-controlled by the equivalent input noise Vn of the main amplifier 1. The number of cascade-type transistor stages constituting the main amplifier 1 is suppressed to a minimum and the high open loop gain can be obtained. Noise Vn depending on the number of the transistors of the main amplifier 1 is suppressed to a minimum and minimum supply voltage required for the operation of the arrangement can be dropped.

2. 发明专利

FR2754405A1 未知
公开(公告)号：FR2754405A1
公开(公告)日：1998-04-10
申请号：FR9612412
申请日：1996-10-08
申请人： DOLPHIN INTEGRATION SA
发明人： COMPAGNE ERIC
IPC分类号： H03F1/26 , H03F1/34 , H03F3/45
摘要： The integrator includes an input resistor (R), receiving a signal (Vin) to be integrated, and a differential amplifier (1) with one of its terminals (E) connected to the output terminal (S) of the integrator. A second amplifier (5) is connected to the first amplifier terminal (E). This amplifier increases the device amplification factor and also reduces the noise in the signal generated by the first amplifier.

3. 发明专利

FR2807562A1 未知
公开(公告)号：FR2807562A1
公开(公告)日：2001-10-12
申请号：FR0004589
申请日：2000-04-10
申请人： DOLPHIN INTEGRATION SA
发明人： COVAREL HERVE , COMPAGNE ERIC
IPC分类号： G11C7/14 , G11C16/28 , G11C7/10 , G11C16/06
摘要： The invention concerns a device for reading a storage cell (4), comprising a reading differential amplifier (18) having a first input terminal (16) connected to a column of cells (10) and a circuit (34) designed to feed to a second input terminal (20) of the amplifier (18) a reference voltage (Vref). The circuit (34) comprises means (38) for storing the voltage of said column and means (38, 40, 42) for applying as reference voltage (Vref) the stored voltage modified by a predetermined quantity.

4. 发明专利

FR2754405B1 未知
公开(公告)号：FR2754405B1
公开(公告)日：1998-12-18
申请号：FR9612412
申请日：1996-10-08
申请人： DOLPHIN INTEGRATION SA
发明人： COMPAGNE ERIC
IPC分类号： H03F1/26 , H03F1/34 , H03F3/45
摘要： The integrator includes an input resistor (R), receiving a signal (Vin) to be integrated, and a differential amplifier (1) with one of its terminals (E) connected to the output terminal (S) of the integrator. A second amplifier (5) is connected to the first amplifier terminal (E). This amplifier increases the device amplification factor and also reduces the noise in the signal generated by the first amplifier.

5. 发明专利

FR2892874B1 未知
公开(公告)号：FR2892874B1
公开(公告)日：2008-01-11
申请号：FR0553295
申请日：2005-10-28
申请人： DOLPHIN INTEGRATION SA
发明人： COMPAGNE ERIC
IPC分类号： H03M1/10 , G01R23/20 , G01R31/26 , H03M3/02
摘要： The device has a module (22) providing a squared and periodic test signal (SIN) to a converter (14), where the signal is a periodic signal having a frequential component with a fundamental frequency and harmonics of the frequency. A digital rejecting filter (16) receives a digital signal from the converter and rejects the frequency to provide a filtered digital signal. A signal-noise and distortion ratio determining module (18) receives the digital and filtered digital signals and provides a signal representing a ratio between effective powers of the digital and filtered digital signals. An independent claim is also included for a method of testing an analog to digital converter.

6. 发明专利

DE602006007282D1 未知
公开(公告)号：DE602006007282D1
公开(公告)日：2009-07-30
申请号：DE602006007282
申请日：2006-10-27
申请人： DOLPHIN INTEGRATION SA
发明人： COMPAGNE ERIC
IPC分类号： H03M1/10
摘要： The device has a module (22) providing a squared and periodic test signal (SIN) to a converter (14), where the signal is a periodic signal having a frequential component with a fundamental frequency and harmonics of the frequency. A digital rejecting filter (16) receives a digital signal from the converter and rejects the frequency to provide a filtered digital signal. A signal-noise and distortion ratio determining module (18) receives the digital and filtered digital signals and provides a signal representing a ratio between effective powers of the digital and filtered digital signals. An independent claim is also included for a method of testing an analog to digital converter.

7. 发明专利

FR2892874A1 DISPOSITIF DE TEST D'UN CONVERTISSEUR ANALOGIQUE-NUMERIQUE 未知
公开(公告)号：FR2892874A1
公开(公告)日：2007-05-04
申请号：FR0553295
申请日：2005-10-28
申请人： DOLPHIN INTEGRATION SA
发明人： COMPAGNE ERIC
IPC分类号： H03M1/10 , G01R23/20 , G01R31/26 , H03M3/02
摘要： L'invention concerne un dispositif de test (20) d'un convertisseur analogique-numérique (14) fournissant un signal numérique (SOUT) à une fréquence d'échantillonnage donnée, comprenant un module (22) de fourniture d'un signal de test (SIN) au convertisseur, le signal de test étant un signal périodique comportant des composantes fréquentielles seulement à une fréquence fondamentale et à des harmoniques de la fréquence fondamentale, la fréquence fondamentale étant un multiple du quart de la fréquence d'échantillonnage ; un filtre (16) adapté à recevoir le signal numérique et à rejeter la fréquence fondamentale pour fournir un signal numérique filtré (SOUT') ; et un module (18) adapté à recevoir le signal numérique et le signal numérique filtré et à fournir un signal (SINAD) représentatif du rapport entre les puissances efficaces du signal numérique et du signal numérique filtré.

8. 发明专利

FR2807562B1 未知
公开(公告)号：FR2807562B1
公开(公告)日：2005-03-25
申请号：FR0004589
申请日：2000-04-10
申请人： DOLPHIN INTEGRATION SA
发明人： COVAREL HERVE , COMPAGNE ERIC
IPC分类号： G11C7/14 , G11C16/28 , G11C7/10 , G11C16/06
摘要： The invention concerns a device for reading a storage cell (4), comprising a reading differential amplifier (18) having a first input terminal (16) connected to a column of cells (10) and a circuit (34) designed to feed to a second input terminal (20) of the amplifier (18) a reference voltage (Vref). The circuit (34) comprises means (38) for storing the voltage of said column and means (38, 40, 42) for applying as reference voltage (Vref) the stored voltage modified by a predetermined quantity.

9. 发明专利

FR2767412B1 未知
公开(公告)号：FR2767412B1
公开(公告)日：2000-06-16
申请号：FR9710513
申请日：1997-08-14
申请人： DOLPHIN INTEGRATION SA
发明人： COMPAGNE ERIC , DUFOURT DENIS
IPC分类号： G11C8/16 , G11C11/405 , G11C11/41 , G11C11/412 , G11C17/12 , G11C11/40

10. 发明专利

FR2767412A1 Memory cell structure 未知
公开(公告)号：FR2767412A1
公开(公告)日：1999-02-19
申请号：FR9710513
申请日：1997-08-14
申请人： DOLPHIN INTEGRATION SA
发明人： COMPAGNE ERIC , DUFOURT DENIS
IPC分类号： G11C8/16 , G11C11/405 , G11C11/41 , G11C11/412 , G11C17/12 , G11C11/40
摘要： The structure has a read transistor (Mr) in series with a memory cell (Mm) and has a low impedance current detector (16) to measure the cell state, thus there are no separate capacitors making the real estate size smaller and allowing faster access.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式