Current-mode Circuits From A Translinear Viewpoint: A Tutorial

Gilbert, B.

doi:10.1049/pbcs002e_ch2

Cited by 91 publications

(70 citation statements)

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“…When operating in the subthreshold regime, form a translinear loop [32], [20] such that (7) where is a subthreshold bias current and is the subthreshold slope factor for a pMOS transistor. 1 and 's gate voltages are globally connected and set off-chip.…”

Section: A Vlsi Implementationmentioning

confidence: 99%

“…The sum of each row's and each column's pixel currents are used at the periphery to bias operational transconductance amplifiers that participate in the distributed computation of and centroids [31]. All currents that contribute to the calculation of the BVM (6), namely , , , and , are used in the vertical NPN bipolar transistor translinear circuit [32] shown at the bottom right of Fig. 11.…”

Section: A Vlsi Implementationmentioning

confidence: 99%

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Image sharpness and beam focus VLSI sensors for adaptive optics

Cohen

Cauwenberghs

Vorontsov³

2002

IEEE Sensors J.

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Section: A Vlsi Implementationmentioning

confidence: 99%

Section: A Vlsi Implementationmentioning

confidence: 99%

Image sharpness and beam focus VLSI sensors for adaptive optics

Cohen

Cauwenberghs

Vorontsov³

2002

IEEE Sensors J.

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“…A suitable choice is (21) being a constant, which must be larger than one. Hence, for intermediate current , it follows (22) This function is easily implemented in a translinear circuit using the generic principle described in [15]; see Fig. 2.…”

Section: Translinear Decompositionmentioning

confidence: 99%

“…2) Due to these small voltage swings, the effects of parasitic capacitances are reduced. This facilitates relatively wide bandwidth operation [14], [15]. 3) Dynamic translinear circuits are easily controlled over a wide range of several parameters, such as gain, frequency, or threshold.…”

Section: Introductionmentioning

confidence: 99%

A wide-tunable translinear second-order oscillator

Serdijn

Mulder

Woerd

et al. 1998

IEEE J. Solid-State Circuits

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Abstract-This paper describes the design and measurement of a translinear second-order oscillator. The circuit is a direct implementation of a nonlinear second-order differential equation and follows from a recently developed synthesis method for dynamic translinear circuits. It comprises only two capacitors and a handful of bipolar transistors and can be instantaneously controlled over a very wide frequency range by only one control current, which indicates its suitability for spread-spectrum communications. Its total harmonic distortion can be made small by the design, which enables fully integrated transmitters. A semicustom test chip, fabricated in a standard 2-m, 7-GHz, bipolar IC process, operates from a single supply voltage, which can be as low as 2 V and oscillates over six decades of frequency with 031 dB total harmonic distortion.

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“…The remaining transistors are used for computing the summands in (6). When operating in the sub-threshold regime, Å ½ Å form a translinear loop [10,3] such that…”

Section: Vlsi Implementationmentioning

confidence: 99%

Focal-plane image and beam quality sensors for adaptive optics

Cohen

Cauwenberghs

Vorontsov

et al.

Proceedings 2001 Conference on Advanced Research in VLSI. ARVLSI 2001

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Control of adaptive optical elements for real-time wavefront phase distortion compensation is a rapidly growing field of research and technology development. Wavefront cor- ½º ÁÒØÖÓ Ù Ø ÓÒAs an optical wave travels through an optically inhomogeneous medium such as the Earth's atmosphere, differences in the index of refraction along the propagation path cause local variations in the speed of light, which lead to wavefront phase distortions or aberrations. Phase distortions in the optical path severely limit the performance of a large class of optical systems and adaptive real-time correction of an optical field's wavefront spatial shape is an important task for a variety of applications: astronomical observations from the Earth, ground-to-ground and ground-to-air laser communication and imaging, laser technology, microscopy, lithography and medical imaging. Technologies for high resolution wavefront shaping are becoming available in the form of microelectromechanical mirrors

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Current-mode Circuits From A Translinear Viewpoint: A Tutorial

Cited by 91 publications

References 0 publications

Image sharpness and beam focus VLSI sensors for adaptive optics

Image sharpness and beam focus VLSI sensors for adaptive optics

A wide-tunable translinear second-order oscillator

Focal-plane image and beam quality sensors for adaptive optics

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