JERRY TWOMEY - IEEE Senior Member
Effective Electrons Inc.
9450 Mira Mesa Boulevard
San Diego, CA 92126
ANALOG, MIXED-SIGNAL AND RF CIRCUIT DESIGN
Extensive experience in high frequency design, analog circuits, interference/inherent noise, ESD & I/O design, ADC's, DAC's, PLL’s, Filters, and micro-power methods. Experienced IC designer in CMOS, BiCMOS, Silicon-Germanium BiCMOS, and Bipolar processes.
SEMICONDUCTOR MODELINGFOUNDRY MODEL ANALYSIS
Simulation model definition from the circuit designer’s perspective. Analyzing a model set, understanding its limitations/deficiencies, and reporting on known problems. Successful design requires accurate modeling.
TECHNICAL TRAINING SEMINARS
On site training programs for IC design teams. Topics available include: Interference Noise in Mixed Signal IC’s, Simulation Vs. Silicon. Practical training in topics necessary for “get it right the first time” chip development.
INTERFERENCE NOISE SOLUTIONS
Cross coupling, substrate noise, magnetic coupling, digital systems interfering with analog/RF circuits. Configuring systems such that digital and analog circuits can function together. This includes circuit architecture, isolation methods, selective frequency planning, and other techniques to make this successful.
TECHNICAL OVERSIGHT AND TROUBLESHOOTING SERVICES
Representing a client’s needs during new product development. Providing technical assistance to design teams, mentoring, assistance with architecture and methodology decisions.
Product development audits & reviews for semiconductor VC investors.
DUE DILIGENCE INVESTIGATIONS
Technical investigations and research, with an emphasis on issues that make a product both a technical and commercial success.
ESD I/O Cells: Digital, RF, Analog, (2KV to 6KV JEDEC HBM)
ADCs: 14 bit (VCO/counter) 13 bit (delta-sigma) 8 bit (pipeline) 10 bit (successive approximation) 6 bit (Flash) up to 300 MHz conversion rates.
DACs: 4 bit to 12 bit, (current steering, multiplexing R-string, PWM over-sampling, delta-sigma)
PLLs: Both ring oscillator and LC VCO structures. Timing recovery, Mixer-LO, video/DVD synchronization, and frequency synthesis.
Filters: Active op-amplifier with RC, switched capacitor, and trans-conductor (gmC) structures. Selective frequency controls and process compensation tuning systems. DC to 500 MHz
Mass Storage: LNA/Pre-Amplifiers, read channels for both disk/tape drives, power drive electronics for spindle motor and servo control.
Power Management, Supervisory/Support Circuitry: Thermal monitoring, voltage regulators and Low Drop Out (LDO) regulators, Battery protection system for Li-Ion Batteries, Op-amps, comparators, band-gap references, variable gain amplifiers, offset alignment, process calibration circuits, network analysis for RF packaging, feedback and control systems.
Foundry/Fabrication/Modeling: Involved with the development of four different foundry processes, both in the definition of the process and its model validation.
ACADEMIC AND PROFESSIONAL
DESIGN TOOL LITERACY
Cadence, Analog Artist, Spectre, Spectre-RF, Virtuosso-XL, Dracula, Mentor Graphics, Design Architect, Accusim, Calibre, Viewlogic, HSPICE/SmartSPICE, Berkley SPICE, PSPICE, Matlab, Orcad.