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Fourteen-bit, 250 MSPS ADC Positioned as Offering Lowest Power Consumption

Tue, 12/01/2009 - 7:15am

fourteen-bit ADC 250 MSPSTexas Instruments Incorporated (TI) introduced the first in a new class of high-speed ADCs delivering ultra-low power consumption and desirable dynamic performance across wide signal bandwidths from DC up to 550 MHz. At the maximum sample rate of 250 MSPS, the 14-bit ADS4149 consumes 30 percent less power, while delivering 3-dB greater signal-to-noise ratio (SNR) than the nearest low-power ADC, according to the company. This enables efficiency and density while enhancing range and sensitivity in defense, test and measurement, and communications applications. The ADS4149 consumes as little as 275 mW per channel at 250 MSPS, while offering 72.5-dB SNR at 100-MHz input frequency. Dynamic power scaling reduces power consumption to 215 mW at 160 MSPS. Optional buffered analog input provides constant input impedance across time and frequency and eliminates sample-and-hold kickback, simplifying input matching for passive and active analog front ends, while reducing pass band ripple.

Texas Instruments
800-477-8924, www.ti.com 
 

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