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ADI uncloaks mixed-signal control processor

Posted: 27 Sep 2013     Print Version  Bookmark and Share

Keywords:Analog Devices  mixed-signal control processor  ADSP-CM40x  ARM Cortex-M4 

Analog Devices Inc. has announced a mixed-signal control processor that the company said features the industry's only embedded dual 16bit ADC with up to 14 bits of accuracy together with a 240MHz floating-point ARM Cortex-M4 processor core. According to the firm, the device allows equipment manufacturers that require highly accurate, closed-loop control in servo, motor-drive, solar PV inverter and other embedded industrial applications to improve the energy efficiency and performance of their products.

According to the company, solar PV has become the largest source of new generation capacity added to the global electricity grid—with a cumulative installation base of 100GW—and is set to become the fastest growing source of renewable energy generation over the next decade. Increased measurement accuracy, supported by the ADSP-CM40x's integrated high precision converters, is driven by ever more stringent grid compliance requirements. This coupled with faster power control loops, fuelled by the emergence of gallium nitride (GaN) and silicon carbide (SiC) power switching technologies, are combining to enable significant performance and cost improvements in the next generation of solar PV inverter topologies, all enabled with the ADSP-CM40x through its 240MHz floating point processing capabilities and best-in-class analogue conversion speed.

The ADSP-CM40x series is intended for precision control applications. In addition to its analogue conversion performance and 380ns conversion speeds, the ADSP-CM40x provides a number of other features such as a full sinc filter implementation to interface directly to isolated sigma-delta modulators (AD7400A/AD7401A) that are used in shunt-based current sensing system architectures. The availability of an on-chip sinc filter eliminates the cost and engineering resources required to implement that function in an FPGA. The ADSP-CM40x 1Ku per year volume pricing starts at Rs.511.95 ($8.14).

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