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100MSPS ADC targets medical, industrial imaging apps

05 Feb 2013

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Texas Instruments Inc. (TI) has rolled out an octal, 12bit, 100MSPS analogue-to-digital converter (ADC) that the company said offers the lowest power consumption in its class. The ADS5295 uses less than 80mW per channel, which diminishes board heat and power dissipation in higher-channel-density applications, indicated the company.

The device incorporates TI's digital processing block that combines commonly used digital functions to help improve signal-to-noise ratio (SNR) and filter harmonics while reducing output data rate for narrow-band applications. The company added that this lowers FPGA cost and simplifies LVDS output routing, reducing the number of PCB layers and BOM.

In addition, the ADC outputs data over one or two wires of LVDS pins per channel, reducing the number of interface lines. This creates a two-wire interface, which keeps the serial data rate low to further reduce FPGA cost.

The ADS5295 can be used in phase-array architecture systems with higher channel counts, such as ultrasound, security x-ray and non-destructive testing (NDT) applications.

An evaluation module (EVM) is available to test the ADS5295 under a variety of conditions. The ADS5295EVM can be purchased for $299. An IBIS model to verify board signal integrity requirements is also available.

The ADS5295 is available in an 80-pin HTQFP package for a suggested retail price of $70 in quantities of 1,000.

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