Substrate Noise Generation in Complex Digital Systems

Donnay, S.; Heijningen, M. van; Badaroglu, Mustafa

doi:10.1007/0-306-48170-7_2

Cited by 3 publications

(4 citation statements)

References 23 publications

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“…The output-referred noise voltage of the preamplifier can be obtained by multiplying the gain and input-referred noise voltage of the preamplifier. The parameters of the input-and output-referred noise currents indicate the noise components of the preamplifier [46][47][48]-useful for demonstrating the noise contribution when amplifying weak echo signals through the preamplifier. Instead of inputor output-referred noise currents, a noise figure was used [49].…”

Section: Design Parameters Of the Preamplifiers For Ultrasound Transd...mentioning

confidence: 99%

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Design of Preamplifier for Ultrasound Transducers

Choi

2024

Sensors

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In diagnostic ultrasound imaging applications, preamplifiers are used as first-stage analog front-end amplifiers for ultrasound transducers because they can amplify weak acoustic signals generated directly by ultrasound transducers. For emerging diagnostic ultrasound imaging applications, different types of preamplifiers with specific design parameters and circuit topologies have been developed, depending on the types of the ultrasound transducer. In particular, the design parameters of the preamplifier, such as the gain, bandwidth, input- or output-referred noise components, and power consumption, have a tradeoff relationship. Guidelines on the detailed design concept, design parameters, and specific circuit design techniques of the preamplifier used for ultrasound transducers are outlined in this paper, aiming to help circuit designers and academic researchers optimize the performance of ultrasound transducers used in the diagnostic ultrasound imaging applications for research directions.

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Section: Design Parameters Of the Preamplifiers For Ultrasound Transd...mentioning

confidence: 99%

“…cate the noise components of the preamplifier [46][47][48]-useful for demonstrating the noise contribution when amplifying weak echo signals through the preamplifier. Instead of input-or output-referred noise currents, a noise figure was used [49].…”

Section: Preamplifiers For Cmut Applicationsmentioning

confidence: 99%

Design of Preamplifier for Ultrasound Transducers

Choi

2024

Sensors

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“…Hence, a voltage fluctuation on the body has a direct effect on the drain current. The body effect degrades the circuit performance mainly at low frequency [15,16].…”

Section: Injection Of Digital Switching Noisementioning

confidence: 99%

System on Chip Noise Integrity Simulation

Gavriilidou

Voulkidou

Noulis

et al. 2022

Chips

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In mixed-signal integrated circuits, interference between digital noisy and sensitive analog/RF circuits is a challenging performance issue. The high cost of chip fabrication requires accurate simulation of the circuits’ performance versus signal and noise integrity. In this paper, a substrate crosstalk noise analysis flow is described and the characteristics of the substrate noise coupling mechanism are analyzed. The proposed noise integrity aware simulation flow properly estimates the substrate coupling effect and predicts the analog/RF victim circuit performance degradation due to noise coupling mechanisms. The methodology is implemented seamlessly in the current standard virtuoso-based design suite and is used in parallel with any commercial design tool, compatible with the standard analog/RF simulation process. The efficiency of the proposed methodology is validated by a full substrate crosstalk aware system on chip vehicle, designed in an RFCMOS 65 nm process. Silicon substrate, interconnect parasitics and package parasitics are efficiently modeled so as to enable the substrate noise simulation. A substrate crosstalk system on chip vehicle is designed in a 65 nm RFCMOS. The crosstalk noise victim is a 5 GHz CMOS LNA and the noise aggressor is a 90 kGates digital logic. It is demonstrated that by applying the proposed methodology, substrate crosstalk performance degradation can be efficiently captured. The LNA carrier degradation and the spectrum distortion re efficiently simulated by identifying all of the noise spurs propagating through the common silicon substrate from the digital logic to the custom low noise amplifier noise victim. The respective inter-modulation spurs are also captured.

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“…As all current injected into substrate will cause substrate noise, this presents a challenging issue for the mixed-signal integrated circuit. The causes of the substrate noise in mixed-signal ICs are mainly due to digital supply noise and the switching noise coupling from drain and source[88]. During switching instance of digital circuit, there often exists a short interval of on time for both NMOS and PMOS transistors, a large current will be drawn from the power supply to ground.…”

mentioning

confidence: 99%

Design of constraint-aware readout circuits for bridge sensor applications

Koay¹

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Substrate Noise Generation in Complex Digital Systems

Cited by 3 publications

References 23 publications

Design of Preamplifier for Ultrasound Transducers

Design of Preamplifier for Ultrasound Transducers

System on Chip Noise Integrity Simulation

Design of constraint-aware readout circuits for bridge sensor applications

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