ADCs enable multi-channel data acquisition at low power
Claiming to provide the lowest power in the smallest package size in their class, the 14b AD9249 and AD9681 are the latest ADCs from Analog Devices. The 16-channel, 65-MSPS AD9249 and the 8-channel, 125-MSPS AD9681 are designed for multi-channel data acquisition at low power where a small package size is crucial to the overall design.
The AD9249 integrates 16 ADC channels into a single package and dissipates 58mW of power per channel at 65 MSPS. This reduces thermal concerns in high-channel-count designs. The 8-channel AD9681 dissipates 110mW per channel at 125 MSPS. Both converters are available in a 10mm x 10mm package, feature on-chip sample-and-hold circuitry, and can also achieve a spurious free dynamic range greater than 90dBc and signal-to-noise ratio of 74dBFS or better.
The ADCs are easy to use with data clock outputs (DCO±1, DCO±2) that operate at frequencies of up to 500MHZ and 455MHz respectively, whilst also supporting double-data-rate operation. The devices require a single 1.8V power supply and an LVPECL-/ CMOS-/LVDS-compatible sample rate clock for full performance operation. No external reference or driver components are required for many applications.
The ADCs are designed for use in ndustrial ultra-sound and instrumentation, healthcare imaging, military countermeasure and communications receiver applications.
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