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High Speed, Isolated, USB Data Acquisition Module with two Simultaneous A/D Channels at 10 MHz

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A high-speed simultaneous USB data acquisition module features isolated, high-speed USB data acquisition at throughput rates up to 10 MHz. With the DT9862 from Data Translation, when two A/D channels are sampled simultaneously, both channels can acquire data at 10 MHz using burst sampling or at 5 MHz continuously. The only limit on throughput is the USB 2.0 bus speed, which has been optimized for the DT9862 to over 25 Mbyte/s.

Each analog input channel has its own separate A/D converter eliminating phase shift between each channel—a problem with multiplexed architectures where all inputs share one common A/D converter. As a result, the DT9862 series can correlate measurements instantly. This overall throughput improvement represents a 5x increase in speed for the industry. The previous fastest isolated USB data acquisition module is the DT9832A at 2 MHz.

Key design features of the DT9862 include 10 MHz sampling per a single channel, 10 MHz for burst sampling for both channels, or 5 MHz for two channels continuously, synchronous operation of all subsystems and two true 16-bit analog inputs for measuring multiple channels simultaneously. There are two optional 16-bit deglitched D/A channels for a simultaneous output rate of up to 2 MSamples/s with an output range of ± 2.5 V. The high-speed digital I/O lines are for time stamping, pattern recognition and synchronizing external events, and there are two 32-bit counter/timers along with flexible clock and trigger modes. Three 32-bit quadrature decoders allow for X/Y positioning and rotation and the unit comes with software and drivers compatible with Windows XP/Vista/7.

Data Translation, Marlboro, MA. (508) 481-3700. [www.datatranslation.com].