Quad sampling ADC feature improved dynamic performance

EDN Europe, 24 Jun 2009

Murata Power Solutions has introduced a new quad sampling ADC (analogue-to-digital converter) for image processing applications where low noise performance and the ability to convert full-scale step input signals at a 10MHz conversion rate is required. The ADSQ-1410 is a functionally complete, quad 14bit resolution, 10Msamples/s converter. The new module features good dynamic performance (SNR 80dB) and is suitable for both time and multi-channel frequency domain applications. A 2.5V precision internal reference, along with individual analogue input range selection pins, provides better tracking over temperature while allowing each channel to be independently configured for an analogue input range of ±1V to ±2.5V. The new modules require ±5V for internal analogue supplies and 2V to 5V supply for logic outputs. The modules use a single rising edge triggered start convert signal to control the conversion of all four ADCs. 2V to 5V digital CMOS outputs are multiplexed into pairs providing two parallel, three-state output buses. Four independent enable control pins offer individual output data and overflow/ underflow selection. Operating temperature range for the ADSQ-1410 is 0ºC to +70ºC and overall package dimensions are 86.36x27.94x9.91mm.


 

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