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EXPERTISE

Mixed signal design
A signal processing system includes an analog front end and the digital processing part. The successful operation of the system depends on the both parts, as well as the interface between them. Some operations could be better implemented in the analog; the others should be done in digital domain. Mixed signal processing requires the knowledge of both analog and digital design methodologies – and the ability to analyze their strengths and weaknesses with respect to the particular problem.

DSP algorithms and software
The majority of the signal processing is done in the digital domain. Our main workhorse is the BlackFin DSP from Analog Devices; we also use the TMS320x DSP from Texas Instruments. We develop custom algorithms optimized for the particular application and hardware.
The areas of expertise include:

* High Speed Modems
* Wireless communication
* Echo Cancellation
* Audio processing
* Digital Class D amplifiers
* Speech compression
* Error correction codes
* Control systems
* Data acquisition, measurement, instrumental algorithms

CAN – enabled controllers
Automotive controllers (ECU) must operate in harsh environments, comply with strict EMI/EMC regulations, be very reliable, provide the fallback and the test modes of the operation, and be reasonably priced. Software bugs and hardware failures are not the option. The growing set of the communication protocol stacks over CAN makes the development increasingly complicated. We provide our expertise in design of the controller hardware and software.

Digital Audio Systems
A DAP (digital audio processor) is a constituent part of a modern HiFi audio system. The audio DSPs perform crossover filtering, frequency equalization, dynamic range compression or expansion, surround sound and the variety of audio effects. Digital technology allows for the flexible configuration and the accurate setup of the parameters. We design the digital audio processors using the specialized ICs and/or the programmable DSPs (TMS320x, ADI BlackFin).

Class D audio amplifiers
The Class D amplifiers are increasingly popular. The main advantage of the Class D is in the high power efficiency, which exceeds 90% in the medium or high power applications. The improved power efficiency translates into the smaller size of the heat sink, the material and the cost savings, and the longer operating hours for the battery-powered devices. However, the optimization of a Class D amplifier is complicated and requires special knowledge. We design the analog and the digital Class D amplifiers. Our experience includes the amplifiers with the rated output power up to 10 kW.