The ADS7947, ADS7948, and ADS7949 SAR A/D converters provide 2-Msample/s and two-channel data conversion at 12-, 10-, and 8-bit resolution, respectively, and were designed for applications such as portable data acquisition, x-y positioning, battery monitoring, and instrumentation and control. Additional features include a SNR of 72 dB at 7.5 mW and a supply range of 2.7 to 5.5 V, with a full-scale input range extending to 5 V, enabling one converter to accommodate both 3.3- and 5-V applications.
Additional power savings can be achieved with an easy-to-implement simplified power-down mode and power scaling to 8 µW/ksamples/s for data rates under 500 ksamples/s, extending the battery life of portable devices. Pseudo-differential inputs reduce the need for additional common-mode signal-conditioning circuitry, and precision offset and gain over temperature eliminate calibration over temperature. (From $0.99 ea/1,000 — available now.)
Texas Instruments , Dallas , TX
Information 800-477-8924
www.ti.com
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