Texas Instruments’ family of two- and four-channel 12- and 14-bit ADCs feature high speed, low power and high performance in tiny 9 x 9mm packages. This pin-compatible family offers designers an easy upgrade path with a range of resolutions, speed and performance options tailored to meet the requirements of advanced communications, radar and imaging, test and measurement, medical, and video applications.
The ADS6000 ADCs are available in speeds of 80, 105 and 125 MSPS. Each device in the family delivers exceptional spurious-free dynamic range (SFDR), high signal-to-noise ratio (SNR), high IF capability and low power per channel. By incorporating single- or dual-stream serialized LVDS outputs, the devices reduce board space by 60 percent compared to CMOS output solutions.
Through an SPI interface, the ADS6000 family provides programmable options such as coarse and fine gain controls to trade a small amount of SNR for a significant increase in SFDR at high IFs, enabling the customer to tailor the performance to the specific application requirements. Designers are also able to optimize the LVDS output configurations by adjusting the driver currents and internal termination resistors to reduce power consumption, improve signal integrity and ease data capture.
The quad, 12-bit, 125-MSPS ADS6425 is the first in this family of products and provides high performance at 70.3 dB SNR and 83dB SFDR at 50MHz IF in the nominal state, with the ability to reach 86 dB SFDR through gain settings.
The 14-bit, 125-MSPS ADS6445 provides an upgrade path for customers requiring higher resolution. Consuming only 410 mW or 420 mW per channel at 125 MSPS, the ADS6425 and ADS6445 allow higher system integration and greater flexibility.
Texas Instruments, www.ti.com
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