A BiCMOS low-distortion 8 MHz lowpass filter

Willingham, Scott D.; Martin, K.

doi:10.1109/isscc.1993.280061

Cited by 11 publications

(4 citation statements)

References 4 publications

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“…In particular the first one is a complete design of a closed-loop 4th order Active-RC low-pass filter able to operate a 1 GHz -3 dB frequency [10,11]. The second filter is based on a super-buffer architecture [12] adequately improved for synthesizing biquadratic cell and amplifiers.…”

Section: Discussionmentioning

confidence: 99%

Continuous Time Analog Filters Design in Nanometerscale CMOS Technologies

Matteis

Baschirotto

2014

High-Performance AD and DA Converters, IC Design in Scaled Technologies, and Time-Domain Signal Processing

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Analog filters are widely used in several kinds of integrated mixedsignal systems, since they are intrinsically needed for in-band signal selection, out-of-band noise rejection and anti-aliasing for the A-to-D (D-to-A) conversion. CMOS technological scaling down has already entered in nm-range scenario, leading to severe degradation of some of the most important MOS device performance for analog design. Among them, lower V DD /V TH ratio (supply voltage and threshold voltage, respectively), higher power consumption, and transistor intrinsic gain decreasing. On the other side the increasing MOS transistor transconductance (g m ) and transition frequency (f T ) enables tens of GHz applications, which take advantage of cheaper and smart CMOS processes. Specific continuoustime analog filters will be presented in this chapter, with the aim to introduce novel circuital topologies or optimizations and techniques suitable to mitigate the severe issues present in sub-90 nm CMOS technological nodes, and at the same time to exploit the opportunity of higher technological scaling-down.

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Section: Discussionmentioning

confidence: 99%

Continuous Time Analog Filters Design in Nanometerscale CMOS Technologies

Matteis

Baschirotto

2014

High-Performance AD and DA Converters, IC Design in Scaled Technologies, and Time-Domain Signal Processing

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“…1b has a buffered output and offers the flexibility to implement both inverting as well as non-inverting amplifiers by just switching the polarity of the OTA's input terminals Some authors have reported circuits that combine OTAs and Miller Integrators with op-amps as an option for the implementation of high frequency continuous time filters [4], [5], [6]. The circuit of Fig.…”

Section: Constant Bandwidth Amplifier Using Otas and Transresistamentioning

confidence: 99%

A simple approach for the implementation of CMOS amplifiers with constant bandwidth independent of gain

Acosta

Carvajal

Ramírez-Angulo

et al. 2008

2008 IEEE International Symposium on Circuits and Systems (ISCAS)

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In this paper we discuss an efficient implementation of the Cherry-Hooper amplifier scheme based on a new OTA structure. This is used to design highly linear CMOS amplifiers with programmable and accurate gain and high bandwidth that remains approximately constant with gain adjustment. A fully differential VGA with 30MHz approximate constant bandwidth and accurate digitally adjustable gain from 1 to 128 in 0.5µm CMOS technology is discussed. Experimental verification of the proposed scheme is also provided.

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“…For . Several circuits which combine low distortion with a rclatively high bandwidth can be found in the Iiterature [16,17]. A final drawback conccrning gm-C filters is their dependence on the parameter gm which makes them highly susceptible ta process variations.…”

Section: Transconductance-c (Gm-c) Filtersmentioning

confidence: 99%