Illustrated portrait
MASc researcher
Adrian Sibiga
Adrian studies VCO-based analog-to-digital conversion, building on earlier work in analog front ends for monolithic active-pixel sensors.
- Program
- MASc
- Supervision
- Leonard MacEachern
- Last updated
- 20 September 2026
Place in MOSAIC
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Research overview
Adrian researches voltage-controlled-oscillator analog-to-digital converters (VCO ADCs), under the sole supervision of Leonard MacEachern. His work now occupies the data-conversion stage of the signal chain, where an analog input is represented through oscillator timing and converted into a digital output.
From detector front ends to data conversion
His earlier research concerned analog front ends for the MALTA-2 and MALTA-3 monolithic active-pixel sensors in the CERN-related MAPS program. That work connected detector requirements to low-voltage analog design, calibration, timing, layout extraction, and asynchronous readout constraints.
The move to VCO ADCs carries this analog-circuit and timing background into time-domain data conversion. The detector-front-end work remains part of his research experience; VCO-based conversion is his current research topic.
Technical background
Adrian’s experience spans both test systems and custom silicon:
- Cadence schematic capture, layout, parasitic extraction, and simulation
- FPGA, Verilog, ARM, STM32, and embedded control
- Mixed-signal PCB design and custom-chip fabrication
- Semiconductor wafer-prober and test automation
- Calibration, timing, phase control, and reliable observability
Industry experience
At MDA, Adrian developed and automated electronics used to test satellite hardware, including Python-based test automation, power and data-interface boards, phase tuning, and embedded control.
At DA-Integrated, he worked closer to semiconductor characterization through wafer-prober and test automation, level shifting, load-board tracking, and the porting of legacy test capability.
Selected project experience
His academic hardware work includes an operational amplifier taken through layout and extraction, a fabricated pseudorandom-number-generator IC, a memristor-crossbar interface, and embedded and FPGA systems. Together, those projects support the model-to-measurement discipline needed for analog and mixed-signal circuit research.
Current direction
The current focus is VCO-based analog-to-digital conversion. This places his research at the interface between analog circuit behaviour, oscillator timing, and digital representations of continuous signals.