Bootstrapped Differential Amplifier with Reduced Common‐Mode Effects

1958 ◽  
Vol 29 (2) ◽  
pp. 122-124 ◽  
Author(s):  
Richard J. Blume
Keyword(s):  
Differential Amplifier ◽  
Common Mode ◽  
Mode Effects

220–325-GHz 25-dB-Gain Differential Amplifier With High Common-Mode-Rejection Circuit in 60-nm InP-HEMT Technology

2021 ◽  
pp. 1-1
Author(s):  
Hiroshi Hamada ◽  
Takuya Tsutsumi ◽  
Adam Pander ◽  
Hideaki Matsuzaki ◽  
Hiroki Sugiyama ◽  
...  
Keyword(s):  
Differential Amplifier ◽  
Common Mode ◽  
Inp Hemt

scholarly journals Design of 16-Bit SAR ADC Using DTMOS Technique

2021 ◽  
Vol 12 (3) ◽  
pp. 3046-3054
Author(s):  
Yarlagadda Archana Et.al
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Power Supply ◽  
Sar Adc ◽  
Differential Amplifier ◽  
Common Mode ◽  
Biomedical Implant ◽  
Low Leakage ◽  
Noise Rejection ◽  
Proper Operation

This paper presents a 16-bit 100MS/s SAR ADC with 1V power supply for biomedical implant systems developed with low power technique i.e., DTMOS logic. It consists of a R-2R DAC, low-power comparator, a digital SAR logic with low-leakage. The designed comparator is a differential architecture that has used to have an excellent, common-mode noise rejection. Comparator was created for proper operation to remain in saturation and could be used with differential amplifier. The comparator is the chief block of power consumption, so we focused mainly much of ability we make to design this module. The ADC is designed using Cadence virtuoso with CMOS 45nm technology. For SFDR, SNR, ENOB and power consumption, the converter utilizes 63.97dB, 51.06 dB, 15.15 and 528.8uw.

scholarly journals Common Mode Voltage Removal using New Balancing Technique for Extraction of Low Level Differential Signals Embedded in Large Common Mode Voltages

2019 ◽  
Vol 9 (1) ◽  
pp. 5533-5538
Keyword(s):  
Differential Amplifier ◽  
Individual Values ◽  
Common Mode ◽  
Common Mode Rejection Ratio ◽  
Rejection Ratio ◽  
Common Mode Voltage ◽  
Wide Range ◽  
The Common ◽  
Specific Band ◽  
The Individual

The paper proposes a method based on new principle for removal of common mode voltages (CMVs) present in the differential signals # . These CMVs can be reduced nearly to zero without using any components with tight tolerances which is achieved using a new balancing technique. It is proved that the performance of the circuit depends only on the ratios and not on the individual values of the resistors because of which the performance of the circuit is not affected over the wide range of temperature. The circuit based on this principle was designed, constructed, tested and results are reported in this paper. Unlike the conventional techniques which use filters for removal of the common mode signals in specific band of the frequencies, the method reported here removes common mode signals of all known and unknown frequencies. Using this method, it is possible to extract very low values of the differential signals in the range of few microvolts where common mode voltages can be as high as few volts. It is possible to improve the effective common mode rejection ratio (CMRR) of any differential amplifier by a factor of more than 103 to 104 with this method.

scholarly journals Design of 16-Bit SAR ADC Using DTMOS Technique

2021 ◽  
Vol 12 (5) ◽  
pp. 144-152
Author(s):  
Yarlagadda Archana, Kakarla Hari Kishore
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Power Supply ◽  
Sar Adc ◽  
Differential Amplifier ◽  
Common Mode ◽  
Biomedical Implant ◽  
Low Leakage ◽  
Noise Rejection ◽  
Proper Operation

This paper presents a 16-bit 100MS/s SAR ADC with 1V power supply for biomedical implant systems developed with low power technique i.e., DTMOS logic. It consists of a R-2R DAC, low-power comparator, a digital SAR logic with low-leakage. The designed comparator is a differential architecture that has used to have an excellent, common-mode noise rejection. Comparator was created for proper operation to remain in saturation and could be used with differential amplifier. The comparator is the chief block of power consumption, so we focused mainly much of ability we make to design this module. The ADC is designed using Cadence virtuoso with CMOS 45nm technology. For SFDR, SNR, ENOB and power consumption, the converter utilizes 63.97dB, 51.06 dB, 15.15 and 528.8uw.

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