A CMOS low power fast-settling AGC amplifier based on integrated RSSI

Bai, Chunfeng; Wu, Jianhui; Zhang, Meng

doi:10.1007/s10470-016-0730-4

Cited by 3 publications

(3 citation statements)

References 13 publications

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“…There are a wide variety of peak detectors, which can realize by diodes or by MOS transistors [8,20]. The diode is constituted of 3 structures within a well type N, which is located into the substrate (type P) of the IC; in the well, there is a main P-type diffusion, surrounded by an N-type diffusion ring and enclosed by another P-type diffusion ring as shown in Figure 9.…”

Section: Peak Detectormentioning

confidence: 99%

“…This paper proposes the use of an Analog Automatic Gain Control (AGC) to handle amplitude changes in biomedical signals to adequate the signal into the input range of the ADC. An AGC is an essential component in many electronic systems in fields such as communications [7][8][9], audio, sensor calibration [10], disk drives and charge-coupled device (CCD) type imaging equipment. The main contributions in AGCs for biomedical applications are in Cochlear Implant [11][12][13][14], control of the amplitude of biomedical signals [15], hearing aids [16], and bionic ears [17].…”

Section: Introductionmentioning

confidence: 99%

“…The peak detector was built by using the modified Miller opamp and a diode. This structure is proposed because presents better output voltage swing compared to [8,20]. Despite a diode is a simple device, the selected technology does not provide this element as part of the available library, so it was necessary to fabricate several diode structures in order to obtain its electrical characteristics.…”

Section: Introductionmentioning

confidence: 99%

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CMOS Analog AGC for Biomedical Applications

et al. 2020

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In this paper, we present the design of an analog Automatic Gain Control with a small silicon area and reduced power consumption using a 0.5 μ m process. The design uses a classical approach implementing the AGC system with simple blocks, such as: peak detector, difference amplifier, four-quadrant multiplier, and inversor amplifier. Those blocks were realized by using a modified Miller type OPAMP, which allows indirect compensation, while the peak detector uses a MOS diode. The AGC design is simulated using the Tanner-Eda environment and Berkeley models BSIM49 of the On-Semiconductor C5 process, and it was fabricated through the MOSIS prototyping service. The AGC system has an operation frequency of around 1 kHz, covering the range of biomedical applications, power consumption of 200 μ W, and the design occupies a silicon area of approximately 508.8 μ m × 317.7 μ m. According to the characteristics obtained at the experimental level (attack and release time), this AGC can be applied to hearing aid systems.

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Section: Peak Detectormentioning

confidence: 99%