Fully Differential Difference Amplifier for Low-Noise Applications

Arbet, Daniel; Nagy, Gabriel; Kovac, Martin; Stopjaková, Viera

doi:10.1109/ddecs.2015.38

Cited by 10 publications

(9 citation statements)

References 12 publications

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“…Where the V T value shown in (6) is the thermal voltage of the pn junction of the transistor is approximately 25 mV at room temperature:…”

Section: Ideal Analysismentioning

confidence: 99%

“…The filter circuit can be further divided into four functional types, Low pass filter: LPF, High pass filter: HPF, Band pass filter: BPF, Notch filter or Eliminate filter: BEF and Low-pass filters are important and have a wide range of applications. For example, in mobile communication systems analog signal processing and in biomedical systems [2][3][4][5][6][7][8]. The low-pass filter to detect biological signals generally uses a voltage in the range of 1V-100 mV and a cut-off frequency below 100 Hz [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

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The development a fully-balanced current-tunable first-order low-pass filter with Caprio technique

Lertkonsarn

Sa-ngiamvibool

2022

Eureka: PE

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This paper presents the development and design of a fully-balanced current-tunable first-order low-pass filter with Caprio technique, which could include the design and implementation of a first-order low-pass filter circuits. The filter consists of six bipolar junction transistor (BJT) and a single capacitor. The filter construction uses a bipolar junction transistor (BJT) as the main device and a single capacitor. A fully-balanced current-tunable first-order low-pass filter with Caprio technique developed. The architecture of the circuit is quite simple and proportional, symmetrical with signs of difference. Circuits developed into integrated circuits act like basic circuits for frequency filter circuits, current modes with Caprio techniques, obtained by improving the first-order low-pass filter for signal differences with incoming impedances. Adjusting the parameters of the circuit with the caprio technique achieves the optimal parameter value for correcting the total harmonic distortion value. The results of testing the operation of the circuit, a fully-balanced current-tunable first-order low-pass filter with Caprio technique developed and designed using the PSpice program. The simulation results showed good results in line with predicted theoretical analysis. The sensitivity of the device to the center frequency (ω0) response is low and independent of variables, the angular frequency is linear with wide current adjustment throughout the sweeping range of a wide frequency range, with a wide range of over tree orders of magnitude. Therefore, fully-balanced current-tunable first-order low-pass filter developed is very suitable to apply various applications regarding low frequency signal filtration, for example in biomedical systems, for example.

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“…Where the V T value shown in (6) is the thermal voltage of the pn junction of the transistor is approximately 25 mV at room temperature:…”

Section: Ideal Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The development a fully-balanced current-tunable first-order low-pass filter with Caprio technique

Lertkonsarn

Sa-ngiamvibool

2022

Eureka: PE

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“…The wise use of this mutual coupling allows for increasing the directive properties of the array, absorbing the impedance variations of the antenna by the connected LNA [21,22]. The work developed in [22][23][24][25][26][27], on the development of dual single-ended and differential structures, has given rise to active balanced feeding networks for the SKA array.…”

Section: Introductionmentioning

confidence: 99%

Differential BroadBand (1–16 GHz) MMIC GaAs mHEMT Low-Noise Amplifier for Radio Astronomy Applications and Sensing

Jimenez-Martin,

Gonzalez-Posadas,

Parra-Cerrada

et al. 2024

Sensors

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A broadband differential-MMIC low-noise amplifier (DLNA) using metamorphic high-electron-mobility transistors of 70 nm in Gallium Arsenide (70 nm GaAs mHEMT technology) is presented. The design and results of the performance measurements of the DLNA in the frequency band from 1 to 16 GHz are shown, with a high dynamic range, and a noise figure (NF) below 1.3 dB is obtained. In this work, two low-noise amplifiers (LNAs) were designed and manufactured in the OMMIC foundry: a dual LNA, which we call balanced, and a differential LNA, which we call DLNA. However, the paper focuses primarily on DLNA because of its differential architecture. Both use a 70 nm GaAs mHEMT space-qualified technology with a cutoff frequency of 300 GHz. With a low power bias Vbias/Ibias (5 V/40.5 mA), NF < 1.07 dB “on wafer” was achieved, from 2 to 16 GHz; while with the measurements made “on jig”, NF = 1.1 dB, from 1 to 10 GHz. Furthermore, it was obtained that NF < 1.5 dB, from 1 to 16 GHz, with a figure of merit equal to 145.5 GHz/mW. Finally, with the proposed topology, several LNAs were designed and manufactured, both in the OMMIC process and in other foundries with other processes, such as UMS. The experimental results showed that the NF of the DLNA MMIC with multioctave bandwidth that was built in the frequency range of the L-, S-, C-, and X-bands was satisfactory.

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“…Parameters related to the frequency spectrum of ECG or EEG signals enable achieving a very low power consumption of AFE in hundreds of nW [ 7 , 8 , 9 ]. Some articles deal only with the design of a differential difference amplifier (DDA) as an attractive replacement for a classical INA composed of three operational amplifiers [ 10 , 11 , 12 , 13 ]. For example, the authors of [ 13 ] introduced a DDA suitable for ECG signal processing with a power consumption of only 313 nW.…”

Section: Introductionmentioning

confidence: 99%

A Fully Differential Analog Front-End for Signal Processing from EMG Sensor in 28 nm FDSOI Technology

Kledrowetz

Prokop

Fujcik

et al. 2023

Sensors

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This paper presents a novel analog front-end for EMG sensor signal processing powered by 1 V. Such a low supply voltage requires specific design steps enabled using the 28 nm fully depleted silicon on insulator (FDSOI) technology from STMicroelectronics. An active ground circuit is implemented to keep the input common-mode voltage close to the analog ground and to minimize external interference. The amplifier circuit comprises an input instrumentation amplifier (INA) and a programmable-gain amplifier (PGA). Both are implemented in a fully differential topology. The actual performance of the circuit is analyzed using the corner and Monte Carlo analyses that comprise fifth-hundred samples for the global and local process variations. The proposed circuit achieves a high common-mode rejection ratio (CMRR) of 105.5 dB and a high input impedance of 11 GΩ with a chip area of 0.09 mm2.

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Fully Differential Difference Amplifier for Low-Noise Applications

Cited by 10 publications

References 12 publications

The development a fully-balanced current-tunable first-order low-pass filter with Caprio technique

The development a fully-balanced current-tunable first-order low-pass filter with Caprio technique

Differential BroadBand (1–16 GHz) MMIC GaAs mHEMT Low-Noise Amplifier for Radio Astronomy Applications and Sensing

A Fully Differential Analog Front-End for Signal Processing from EMG Sensor in 28 nm FDSOI Technology

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