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Mixed-Signal (Hybrid Analog/Digital)
Integrated Circuits & Systems
Research Interests
- Analog/RF and Mixed-Signal Integrated
Circuits (ICs)
- ICs for High-Speed Data Communication & Signal Processing
- Integrated Microsystems for Biomedical Applications
Research Sub-Areas
- Nyquist-Rate and Oversampling Data Converters
- Delta-Sigma Modulation
- Digital Correction Techniques for High-Resolution Data Conversion
- Phase-Locked Loops and Frequency Synthesizers
- Low-Voltage Analog/RF Circuit Design
Research Emphasis
Ironically, the significance of analog circuit design has grown more prominent
in the "digital" communication age due, in part, to data converters. These converters
provide the critical interfaces between the analog and digital domains in communication
and signal-processing systems. Accordingly, the research emphasis is to achieve a breakthrough
in the limitations (integration, speed, and power) that data converters impose on these
integrated systems.
Research Vision
- To develop architectures for mixed-signal
ICs, which utilize the advanced digital-signal-processing
(DSP) capabilities of scaled CMOS technologies in order
to mitigate the non-ideal behavior of the analog
circuitry in integrated systems. Techniques include
digital calibration, error correction, spectral shaping,
and programming.
- To devise circuit-design techniques for low-power
high-precision analog circuits, which are fabricated in
nano-scale CMOS technologies for higher integration
of the analog and digital functions in an
integrated system and, hence, for lower fabrication costs.
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