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12-, 14bit ADC devices deliver 65每250MSPS

Posted: 27 Jul 2011 ?? ?Print Version ?Bookmark and Share

Keywords:ADC? 3G/LTE? RF channel?

Texas Instruments Inc. has added eight dual-channel devices available in 12bit and 14bit resolutions at speeds of 65每250MSPS to its line of analog-to-digital converters (ADCs). The ADS42xx family provides the performance and bandwidth needed for 3G/LTE wireless base stations, portable test and measurement and software defined radio applications, while providing low power consumption.

The 14bit ADS4246 uses 332mW total power at 160MSPS, 35 percent less power than its closest competitor, the company stated. The family provides options down to 92mW per channel to reduce board heating and operating costs. It is pin-compatible with 11bit, 200MSPS ADS58C28, providing a license-free export option with up to 65MHz of high-performance RF channel bandwidth at input frequencies over 200MHz. The devices also feature 6dB programmable gain option that provides flexibility to achieve a high signal-to-noise ratio of up to 73.6dBFS and spurious free dynamic range (SFDR) of up to 91dBc for high receive sensitivity in 3G/LTE wireless infrastructure.

TI offers a range of tools and support to speed development with the ADS42xx family that include an evaluation module (EVM) for each part and TSW1200 digital capture tool for rapid analysis of EVMs. It also provides an Altera-compatible high-speed mezzanine connector and Xilinx-compatible FPGA mezzanine connector, allowing ADS42xx EVMs to mate to FPGA EVMs to speed system-level prototyping. Also offered are IBIS models to verify board signal integrity requirements and software for calculation utilities, including an ADC harmonic calculator, anti-aliasing calculation tool, and jitter and SNR calculator.

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