Seyed Armin Tajalli

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Publications associées (48)

A 5.43-μW 0.8-V Subthreshold Current-Sensing Σ∆ Modulator for Low-Noise Sensor Interfaces

Alexandre Schmid, Seyed Armin Tajalli, Yusuf Leblebici, Nikola Katic

A micro-watt power subthreshold current modulator suitable for low-power and low-noise sensor interfaces is presented. The prototype design is based on Subthreshold Source Coupled Logic (STSCL) cells and implemented in a 0.18 μm standard CMOS technology. T ...

2014

Wide-Range Dynamic Power Management in Low-Voltage Low-Power Subthreshold SCL

Seyed Armin Tajalli, Yusuf Leblebici

Power-frequency scaling in subthreshold source coupled logic (STSCL) systems has been studied and analyzed. It is shown that the operating frequency of such systems can be adjusted over about three decades with linearly proportional power dissipation. The ...

Ieee-Inst Electrical Electronics Engineers Inc2012

Methods and systems for noise resilient, pin-efficient and low power communications with sparse signaling codes

Mohammad Amin Shokrollahi, Seyed Armin Tajalli, Harm Cronie

In bus communications methods and apparatus, a first set of physical signals representing the information to be conveyed over the bus is provided, and mapped to a codeword of a sparse signaling code, wherein a codeword is representable as a vector of a plu ...

2012

Power and Area Efficient MOSFET-C Filter for Very Low Frequency Applications

Seyed Armin Tajalli, Yusuf Leblebici

New circuit design techniques for implementing very high-valued resistors are presented, significantly improving power and area efficiency of analog front-end signal processing in ultra-low power (ULP) biomedical systems. Ranging in value from few hundreds ...

Springer Verlag2012

Design trade-offs in ultra-low-power CMOS and STSCL digital systems

Yusuf Leblebici, Seyed Armin Tajalli

2011

Low-Power and Widely-Tunable Linearized Biquadratic Low-Pass Transconductor-C Filter

Seyed Armin Tajalli, Yusuf Leblebici

A sixth-order low-pass

g_m

-C filter with a very wide tuning range (

f_c

= 100 Hz to 10 MHz) is presented. The wide tuning range has been achieved without using switchable components or programmable building blocks. A single stage folded-cascode transcon ...

Institute of Electrical and Electronics Engineers2011

Design Tradeoffs in Ultra-Low-Power Digital Nano-Scale CMOS

Seyed Armin Tajalli, Yusuf Leblebici

In ultra-low-power (ULP) applications, the supply voltage is generally reduced well below threshold voltage of MOS devices in order to limit dissipation and to control the device leakage current due to the subthreshold channel residual current. However, re ...

Institute of Electrical and Electronics Engineers2011

An area and power optimization technique for CMOS bandgap voltage references

Seyed Armin Tajalli, Mohammad Chahardori

This article explores the main tradeoffs in design of power and area efficient bandgap voltage reference (BGR) circuits. A structural design methodology for optimizing the silicon area and power dissipation of CMOS BGRs will be introduced. For this purpose ...

Springer US2010

A 9 pW/Hz Adjustable Clock Generator with 3-Decade Tuning Range for Dynamic Power Management in Subthreshold SCL Systems

Seyed Armin Tajalli, Yusuf Leblebici

A widely-tunable and power-scalable clock generator for ultra-low power (ULP) applications is presented. Benefitting from a novel self-adjustable loop frequency response, the proposed phase-locked loop based clock generator exhibits a tuning range of three ...

2010

Ultra-Low Power Mixed-Signal Design Platform Using Subthreshold Source-Coupled Circuits

Seyed Armin Tajalli, Yusuf Leblebici

This article discusses system-level techniques to optimize the power-performance trade-off in subthreshold circuits and presents a uniform platform for implementing ultra-low power power-scalable analog and digital integrated circuits. The proposed techniq ...

DATE2010

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g_m

-C filter with a very wide tuning range (

f_c

= 100 Hz to 10 MHz) is presented. The wide tuning range has been achieved without using switchable components or programmable building blocks. A single stage folded-cascode transcon ...

Institute of Electrical and Electronics Engineers2011