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Analog Devices, Norwood, MA, has introduced a series of 24-bit simultaneous sampling sigma-delta A/D converters for wide-bandwidth, high-density healthcare equipment. The AD7768 series includes a power scalable modulator and digital filter on each channel to enable the synchronized, precise measurement of both ac and dc signals in instrumentation applications, including modular data acquisition, audio test, and asset condition monitoring. The high throughput, fast settling response and simultaneous sampling enables faster test times, which reduces testing costs and allows more efficient instrumentation design. The AD7768 series’ high channel count provides healthcare devices, such as clinical vital signs monitoring equipment, with the means to significantly expand channel density while maintaining low power and high input bandwidth. The new converters also deliver improved power quality monitoring by detecting harmonic distortion over a wider bandwidth for detection and diagnosis of grid imbalance.

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