Analog-to-Digital Converter

August 1, 2016

The new EV12AD550 1.5GSps ADC from e2v (Chelmsford, UK) supports high dynamic range at 4.5GHz and S-band direct digitization, which enables space systems to avoid costly down conversion requirements. Future Synthetic Aperture Radar (SAR) Earth observation systems, for example, will be able to operate this ADC at up to 5.5GHz without the need for down conversion. The removal of down conversion stages reduces the weight, size and power consumption of the overall space system, helping to reduce expensive orbit costs.

The EV12AD550 is the first S-band ADC to feature chain synchronization for electronic steering which offers full flexibility in antenna array and digital beamforming systems. The growing demand for electronically adapting satellite ground coverage makes chain synchronization crucial; without this, antennas have to be directed using mechanics, meaning coverage is predetermined.

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