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- Abishek Mann, Amit Karalkar, Lili He, Morris Jones
- ISQED
- 2010

A phase lock loop is a closed-loop system that causes one system to track with another. More precisely, a PLL can be perceived as a circuit synchronizing an output signal with a reference or input signal in frequency as well as phase. Highperformance phase lock loops are widely used within a digital system for clock generation, timing recovery, and to… (More)

The goal of this project is to implement a 10-bit segmented current steering TSMC 0.25μm CMOS digital to analog converter. Binary coded 10-bit data was input to the converter. The converter will convert all combinations of ten bits from digital form into correspondent “staircase” voltage levels. A low pass filter placed after the output terminal of the… (More)

This paper presents the design of a first-order continuous-time sigma-delta modulator. It can accept input signal bandwidth of 10 kHz with oversampling ratio of 250. The modulator operates at 1.8 V supply voltage and uses 0.18 um CMOS technology. It achieves a level of 60 dB SNR..

- Adithya V. Kodati, Koneswara S. Vemuri, Lili He, Morris Jones
- ISQED
- 2009

- Jayesh Patil, Lili He, Morris Jones
- 2010 3rd International Conference on Computer…
- 2010

This paper presents the design and implementation of a 6 Gbps clock and data recovery (CDR) system for Serial Advanced Technology Attachment (SATA) standard. The CDR incorporates half rate phase detector and is realized using a 2 loop PLL consisting of a coarse loop and a fine loop. Fast frequency acquisition is acquired through coarse loop and fine phase… (More)

- Anisha Raj Seli, Hoa Nguyen, Lili He, Morris Jones
- ISQED
- 2011

- Sireesha Dhulipati, Lili He
- 2015

This paper proposes a low jitter PLL using DAC for Serializer/Deserializer (SerDes) transmitter realized using 45nm technology. It aims at having lesser jitter, low power, for high speed applications using capacitive free blocks. The project analyzes and finds the best combination of digital and analog blocks (Digital PLL) that could be used to work at GHz… (More)

This paper describes an 8-bit, 10 MSamples/second analog to digital converter, with 2V fully differential input range, which is implemented in TSMC 0.25μm CMOS technology. It achieves low power dissipation of 25mW, and the chip area is 0.56mm. Measured performance yields a very good VTC curve and a sine wave fitting curve for 200KHz input at 10Msample/s,… (More)

- Neehar Jandhyala, Lili He, Morris Jones
- ISQED
- 2008

This paper presents the design of low power, low cost design of temperature sensor that has been designed keeping in view VLSI circuits and technology changes. The circuit occupies an area close to 0.01mm, which is less than 1/100 of the area occupied by most of the previous circuits that use capacitors and A/D converters. Power dissipation of the circuit… (More)

- Biye Wang, Lili He, Morris Jones
- ISQED
- 2006

This paper presents the design of a low input (0.75 to 1.75V) and low power dissipation pipelined CMOS ADC. The 8 bits ADC consumes 78.3mW power at 2.5V supply voltage. The DNL and INL are 0.6LSB and 0.7LSB respectively, and SFDR is 51.259dB at 195kHz input frequency. The chip area is 1.023 mm × 0.795 mm with TSMC025..m CMOS technology.

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