scholarly journals Integrated circuit design techniques for high-speed low-power analog-to-digital converters and on-chip calibration of sensor interface circuits

2017 ◽  
Author(s):  
Seyed Alireza Zahrai
Keyword(s):  
Low Power ◽  
Circuit Design ◽  
Integrated Circuit ◽  
High Speed ◽  
Integrated Circuit Design ◽  
Interface Circuits ◽  
Sensor Interface ◽  
Analog To Digital ◽  
Sensor Interface Circuits ◽  
On Chip

Thermometer to Gray Encoders

2015 ◽  
pp. 323-335
Author(s):  
Yogendra Gupta ◽  
Sandeep Saini
Keyword(s):  
Low Power ◽  
High Speed ◽  
High Performance ◽  
Gray Code ◽  
Direct Conversion ◽  
Flash Adc ◽  
Analog To Digital ◽  
Modulation Techniques ◽  
On Chip ◽  
Minimal Area

Analog to Digital Converter (ADC) is a key functional block in the design of mixed signal, system on chip, and signal processing applications. An optimized method for the direct conversion of analog signal to Gray code representation is presented. This eliminates the need for binary-to-Gray code conversion in many digital modulation techniques like M-PSK and M-QAM, which uses Gray coding representation to represent the symbols that are modulated. The authors design a low-power and high-speed Thermometer to Gray encoder for Flash ADC, as encoders have been widely utilized in high-performance critical applications which persistently impose special design constraints in terms of high-frequency, low power consumption, and minimal area. In this chapter, they propose a new circuit that converts the Thermometer code to Gray code and also yields minimized power.

A Low-Power Time-to-Digital Converter for Sensor Interface Circuits

2020 ◽  
Vol 67 (12) ◽  
pp. 2853-2857
Author(s):  
Mohammad Saleh Rostami ◽  
Mehdi Saberi ◽  
Mohammad Maymandi-Nejad ◽  
Mohamad Sawan
Keyword(s):  
Low Power ◽  
Digital Converter ◽  
Interface Circuits ◽  
Sensor Interface ◽  
Time To Digital Converter ◽  
Sensor Interface Circuits

Considerations on the de-embedding of differential devices using two-port techniques

2010 ◽  
Vol 2 (3-4) ◽  
pp. 349-357 ◽  
Author(s):  
Vadim Issakov ◽  
Maciej Wojnowski ◽  
Andreas Thiede ◽  
Robert Weigel
Keyword(s):  
Circuit Design ◽  
Integrated Circuit ◽  
High Frequency ◽  
Mode Conversion ◽  
Complementary Metal Oxide Semiconductor ◽  
Metal Oxide Semiconductor ◽  
Oxide Semiconductor ◽  
Integrated Circuit Design ◽  
Differential Signaling ◽  
On Chip

Differential signaling is very common for high frequency integrated circuit design. Accurate multimode de-embedding at multigigahertz frequencies, however, is a major challenge. The differential and common-mode parameters can be obtained by converting the measured four-port nodal S-parameters into the mixed-mode form. Under certain conditions, it is possible to separate the modes and consider only the entries corresponding to the differential S-parameters. This allows to reduce the measured 4 × 4 matrix to a 2 × 2 matrix and consider the differential device as a two-port network. Thus, the standard de-embedding techniques, derived for two-port networks, can be applied to differential S-parameters. The purpose of this paper is to investigate the applicability of this approach for on-wafer measurements. We describe analytically the conditions under which this method is valid. As an example, a 2:1 transformer, manufactured in Infineon's 0.13 μm CMOS (complementary metal-oxide semiconductor) process, has been characterized. On-chip de-embedding structures have been fabricated using the same process. The results obtained using Short-Open, Thru-Line, and Thru-Line-Reflect de-embedding techniques are compared. Additionally, the results are verified by simulation of a device under test having high-mode conversion.

MICROCONTROLLER BASED LIGHT CONTROL

2005 ◽  
Vol 15 (02) ◽  
pp. 319-324 ◽  
Author(s):  
MOHAMMED RAFIQ UDDIN ◽  
GAZI MAEEN -UR- RASHID ◽  
MD. SHAHIDUL ISLAM
Keyword(s):  
Control System ◽  
Circuit Design ◽  
Integrated Circuit ◽  
Data Stream ◽  
Microelectronic Device ◽  
Digital Form ◽  
Integrated Circuit Design ◽  
Analog Device ◽  
Analog To Digital ◽  
Device Processing

A microcontroller-based control system is a direct outgrowth of the extensive advances in the Integrated Circuit design and microelectronic device processing technology. This has led to the development of new forms of technologies. This paper presents a technique of microcontroller based control system for controlling the lights of a room. Using the technique, according to the intensity of the sunlight in a room, the states of light of that room will change. Therefore we need to collect data or information from the environment using light sensors to control lights. The microcontroller collects the information from the atmosphere and changes the state of different lights. The analog data collected by the sensors are converted to digital form by an Analog to Digital Converter (ADC) and then fed to the microcontroller. The output data stream of the microcontroller is in digital form by which analog device lights will be controlled.

scholarly journals Approximate arithmetic circuits

2020 ◽  
Vol 9 (3) ◽  
pp. 183
Author(s):  
Navabharath Reddy G ◽  
Sruti Setlam ◽  
V. Prakasam ◽  
D. Kiran Kumar
Keyword(s):  
Low Power ◽  
Circuit Design ◽  
Integrated Circuit ◽  
Power Dissipation ◽  
Cmos Technology ◽  
Integrated Circuit Design ◽  
Compressor Design ◽  
Low Power Dissipation ◽  
Human Sense ◽  
Error Distance

Low power consumption is the necessity for the integrated circuit design in CMOS technology of nanometerscale. Recent research proves that to achieve low power dissipation, implementation of approximate designs is the best design when compared to accurate designs. In most of the multimedia ap- plications, DSP blocks has been used as the core blocks. Most of the video and image processing algorithms implemented by these DSP blocks, where result will be in the form of image or video for human observing. As human sense of observation isless, the output of the DSP blocks allows being numerically approx- imate instead of being accurate. The concession on numerical exactness allows proposing approximate analysis. In this project approximate adders, approximate compressors and multipliers are proposed. Two approximate adders namely PA1 and PA2 are proposed which are of type TGA which provides better results like PA1 comprises of 14 transistors and 2 error distance, achieves reduction in delay by 64.9 % and reduction in power by 74.33% whereas the TGA1 had 16 transistors and more power dissipation.PA2 comprises of 20 transistors and 2 error distance. Similarly PA2 achieves delay reduction by 51.43%, power gets reduced by 67.2%. PDP is reduced by 61.97 % whereas TGA2 had 22 transistors. Approximate 4-2 compressor was proposed in this project to reduce number of partial produt. The compressor design in circuit level took 30 transistors with 4 errors out of 16 combinations whereas existing compressor design 1took 38 and design 2 took 36 transistors. By using the proposed adder and compressors, approximate 4x4 multiplier is proposed. The proposed multiplier achieves delay 124.56 (ns) and power 29.332 (uW)which is reduced by 68.01% in terms of delay and 95.97 % in terms of power when compared to accurate multiplier.

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