Well seasoned, reliable & creative Electronics Hardware Designer. I started out in the analog world & have moved into the digital arena over the last several years. I have great communications skills and get along well with others, but can function virtually independently. I've been referred to as a one man wrecking crew when it comes to the workload that I can handle. I always enjoy a new challenge and am always thinking about alternative approaches that may improve a design. Initial architecture development, component research, simulation, schematic capture, BOM generation, PCB layout, CPLD design, technical guide, initial bring up, debug, system integration, design verification, production test procedures. • Initial design concept / block diagrams: Word, Excel, Visio, etc • Simulation: Altium, PSPICE, online simulators like LT SPICE, TI Tina, etc, learning ModelSim • Schematic Capture: Altium, Pads, ORCAD, PCAD, DxDesigner, & others • PLM: Omnify, Arena • PLD: Quartus II • PCB layout: Altium, Pads, Allegro, & others • Analog Design: discrete designs, passives, diodes, transistors, op amps, voltage regulators, transformers, etc., low noise, low distortion, active & passive filters • Mixed Signal: ADCs, DACs, Class-D, SMPS • Digital: standard logic, MCU, DSP, Memory, CPLD ( glue logic, SPI switching, signal multiplexing ) • Specialized: SPDIF, HDMI, USB, Volume Controls, MDAC, VCA, video filters & amplifiers, PLL • Interfaces: SPI, I2C, I2S, LVDS, RS-232, Ethernet, USB • Design for compliance: ESD, radiated, RFI, signal integrity, GHz transmission lines, PCB stackup • Knowledge of passive secondary effects: ESR, TCR, dielectric absorption, etc • Design for manufacturability • Lab instruments: DMM, Scope, Power Meter, Active Load, Signal Generators, Spectrum Analyzer, Audio Precision, Aardvark ( USB SPI master ), PLD & memory programmers.

Senior Electrical Engineer @ From May 2013 to Present (2 years 8 months) Senior Hardware Engineer @ http://www.harmanluxuryaudio.com/ Design of high end consumer AV equipment ( Lexicon and Mark Levinson brands ) including: 2 Channel Preamplifiers, multichannel Pre/Pros, Integrated Amps, Receivers, CD & DVD players, and Power Amplifiers. Envision and develop new strategies to improve audio performance through simulation, bench testing, and listening evaluations. Responsible for architecting and developing analog & digital audio circuitry including ADCs, DACs, low jitter digital interfaces, Op Amp & discreet designs. Work with linear and switching power supplies ( including recent low power EuP design ), analog video, general digital control (I2C,SPI), and digital audio interfaces (HDMI, USB, SPDIF). Schematic based CPLD design of glue logic, SPI & signal multiplexing. Intimate understanding of design for compliance & manufacturing. Involved in the development of prototype and production test procedures. Mentored Junior Engineers. Received numerous bonuses and positive reviews in the eight years at Luxury Audio & HSG. From November 2004 to May 2013 (8 years 7 months) Analog Hardware Engineer @ http://bostonacoustics.com/ Design of Home Theater in a Box, Subwoofers, Powered PC Speakers, and disc based audio systems from conception to production. Responsible for entire development and documentation process including schematics, BOMs, and PCBs. Did all of the research, evaluation, troubleshooting, cost cutting and testing for assigned projects. Interfaced with mechanical, compliance, project, test, and software engineers. Generally worked with PCAD tools for design documentation, but also used ORCAD, PADS, CAM CAD, and others. Simulated with ORCAD’s P-SPICE and Altium DXP Simulator. Mixed signal designs involved the use of MCUs, DSPs, ADCs, DACs, VCAs, power amplifiers, memory devices, power supplies, OP Amps, discrete transistor circuits, etc. Experienced in getting PCBs with high speed clocks through compliance testing. From July 1996 to November 2004 (8 years 5 months) Electrical Engineer @ Responsibilities included design, PCB layout, prototyping, test, evaluation, development of test procedures, and specifications for multimedia speaker systems. Projects included design of first Dolby Licensed Surround Sound speaker system for the PC, laptop computer amplifier, various computer monitor amplified speaker systems, and stand alone powered speaker systems for the PC. Extensive Audio Precision experience. From October 1994 to August 1996 (1 year 11 months)

BSEE @ Rochester Institute of Technology From 1986 to 1991 Darrell Hayes is skilled in: Electronics, Cross-functional Team Leadership, Analog, Sound, Embedded Systems, Product Development, Acoustics, Consumer Electronics, Digital Signal Processors, Product Marketing, Firmware, Audio Processing, Embedded Software, Product Management, Debugging