Analytical determination of output resistance and DC matching errors in MOS current mirrors

Wang, Z.

doi:10.1049/ip-g-2.1990.0061

Cited by 29 publications

(12 citation statements)

References 21 publications

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“…The analytic results of the output resistance are summarized for Wilson, improved Wilson, cascode, and modified cascode current mirrors as follows, respectively. All of equations were obtained by using each small-signal equivalent circuits and identical MOS transistor structures [1,10].…”

Section: The Results and Discussionmentioning

confidence: 99%

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The comparative analysis of current mirror based CMOS current amplifiers

Tokmakçı

2007

IEICE Electron. Express

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Abstract:In this paper, current mirror based Current Amplifiers (CAs) with differential structure are simulated and compared by PSPICE program using HP 0.8 µm CMOS process parameters. The proposed CA designs are based on four well-known current mirror structures such as wilson, improved wilson, cascode, and modified cascode current mirrors. The comparison parameters are power dissipation, bias current, input resistance, output resistance, and cut-off frequency obtained from DC transfer characteristics and AC frequency response of proposed circuits.

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Section: The Results and Discussionmentioning

confidence: 99%

“…In principle, the output current ought to be free from noise and the circuit must have high output impedance. Current mirrors are commonly found in circuits such as amplifiers, comparators, and regulated current sources, etc [8,9,10,11].…”

Section: The Description Of Current Mirror Based Current Amplifiersmentioning

confidence: 99%

The comparative analysis of current mirror based CMOS current amplifiers

Tokmakçı

2007

IEICE Electron. Express

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“…The circuit can be viewed as the connection of improved Wilson current mirrors which share their output diode-connected transistor. This avoids DC matching errors typical of conventional Wilson mirrors [48].…”

Section: Connective Stagementioning

confidence: 99%

Implementation of CMOS fuzzy controllers as mixed-signal integrated circuits

Baturone

Sánchez-Solano

Barriga

et al. 1997

IEEE Trans. Fuzzy Syst.

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Abstract:This paper discusses architectural and circuit-level aspects related to hardware realizations of fuzzy controllers. A brief overview on fuzzy inference methods is given focusing on chip implementation. The singleton or zero-order Sugeno's method is chosen since it offers a good trade-off between hardware simplicity and control efficiency. The CMOS microcontroller described herein processes information in the current-domain, but input-output signals are represented as voltage to ease communications with conventional control circuitry. Programming functionalities are added by combining analog and digital techniques, giving rise to a versatile microcontroller, capable of solving different control problems. After identifying the basic component blocks, the circuits used for their implementation are discussed and compared with other alternatives. This study is illustrated with the experimental results of prototypes integrated in different CMOS technologies.

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“…Improved Wilson current mirrors are connected instead of Wilson mirrors because the latter suffer from DC matching errors due to their asymmetrical biasing [15].…”

Section: Membership Function Circuitsmentioning

confidence: 99%

“…Therefore, the output impedance is given by [15]: (6) When there are p maximum input currents, the output impedance is increased approximately by a factor p 1/2 because p transistors T i are now conducting a current I max /p. The precision of the circuit is slightly reduced in this situation due to the appearance of DC matching errors, however…”

Section: Membership Function Circuitsmentioning

confidence: 99%

Integrated circuit implementation of fuzzy controllers

Huertas

Sánchez-Solano

Baturone

et al. 1996

IEEE J. Solid-State Circuits

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This paper presents mixed-signal current-mode CMOS circuits to implement programmable fuzzy controllers that perform the singleton or zero-order Sugeno's method. Design equations to characterize these circuits are provided to explain the precision and speed that they offer. This analysis is illustrated with the experimental results of prototypes integrated in standard CMOS technologies. These tests show that an equivalent precision of 6 bits is achieved. The connection of these blocks according to a proposed architecture allows fuzzy chips with low silicon area whose inference speed is in the range of 2 Mega FLIPS (fuzzy logic inferences per second).

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Analytical determination of output resistance and DC matching errors in MOS current mirrors

Cited by 29 publications

References 21 publications

The comparative analysis of current mirror based CMOS current amplifiers

The comparative analysis of current mirror based CMOS current amplifiers

Implementation of CMOS fuzzy controllers as mixed-signal integrated circuits

Integrated circuit implementation of fuzzy controllers

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