Current (and Past) Research Interests

From roughly 1986 to 2001 my research centered exclusively on analog circuit design for instrumentation and communication systems (sweep circuits, PLLs, data converters, modem design, fiber optic receivers and transmitters, etc.) In the last few years I have also worked on applying fundamental digital signal processing techniques to enhance sensing in array structures including: displays, CMOS imagers, and floating-gate/nascent memory technologies (e.g., flash, chalcogenide and magnetic).

Currently my main research focuses on

1) finding an electronic, that is, no mechanical component, replacement for the hard disk drive using nascent fabrication technologies

2) analog and mixed-signal circuit design for communication systems, data conversion, and synchronization

3) methods to deliver circuit design education to industry and off-campus students

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• Sensing schemes for new memory technology
• Low-overhead voltage regulators for DRAM memory chips
• High-speed digital timing circuits including input buffers, delay-locked loops and comparators
• Design of sigma-delta ADCs for CMOS image sensors
• Pipelined ADCs for CMOS imaging chips
• Noise-shaping analog-to-digital conversion
• A high-speed low-power 10-bit DAC
• 64 MHz DAC for power line communications (ITRAN communications, 1999)
• High-speed clocked comparator for spread spectrum communications (ITRAN communications, 1999)
• Pre-amplifier with clipped output (ITRAN communications, 1999)
• Power op-amp for driving 30 ohm equivalent load (ITRAN communications, 1999)
• An R-2R type 10-bit (and an 8-bit version) DAC in 0.18 um CMOS (Amkor wafer fabrication services, 1999)
• A PLL for an embedded DRAM chip (Micron Technology, 1999)
• Low-power CMOS Crystal Oscillator (Tower RDT ASIC center, Israel, 1998)
• High sensitivity comparator with 0.5 mV hysteresis (Tower RDT ASIC center, Israel, 1998)
• Pixel clock generator from a PCI clock (Rendition, Santa Clara, 1998).
• CMOS PLL design in submicron CMOS (Amkor wafer fabrication services, 1998)
• High-speed (>500 Mbits/s), low-skew fully-differential digital receiver/transmitter design (Micron, 1998)
• Test DLL for data rates up to 500 Mbits/s (Micron Technology, 1998)
• CMOS pecision voltage reference without substrate injection (Micron Technology, 1997)
• Power up/down circuit for a modem (Tower Semiconductor, Israel, 1997)
• 10 MHz 8-bit D/A converter that can drive low resistance load (Tower Semiconductor, Israel, 1997)
• High-speed modem receiver (Tower Semiconductor, Israel, 1997)

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