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Reference design to gather smart electricity distribution data faster, more accurately

Reference design to gather smart electricity distribution data faster, more accurately

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By eeNews Europe



Utility organisations worldwide, says Maxim, are deploying more robust applications that require highly accurate distributed grid status data to exploint distributed generation technologies such as solar and wind power. Voltage and current measurements must be gathered simultaneously for all lines, so the utility can understand the timing among phases and ensure maximum uptime across the grid. Petaluma is a high-speed, simultaneous-sampling, 8-channel analogue input front-end (AFE) that monitors grid data simultaneously from all phases, so grid managers can optimise their distribution automation signal chain.

Petaluma is tuned to the 50 Hz to 60 Hz signal to match power grids around the world. The simultaneous sampling of three phases is done with low power consumption in the 1W range. Its high-speed sample rate (250 ksamples/sec per channel) comes with 16-bit accuracy, allowing for quick responses to grid fault conditions.


Petaluma performs well in any application that requires multiple simultaneous sampling of analogue inputs, such as multiphase motor control and industrial vibration sensing, to accurately calculate instantaneous power consumption.

It features;

High accuracy: a 16-bit ADC and external voltage reference provide the highest possible accuracy of 0.02% and a 3 ppm/°C maximum temperature coefficient.

Simultaneous sampling: the subsystem includes eight high-speed 250 ksample/sec simultaneous-sampling analogue input channels that accept ±10V input signals.

Low power: Petaluma has low power consumption in the 1W range.

Maxim Integrated; www.maximintegrated.com

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