Four-channel 16-bit SAR ADC said fast and affordable

12 March 2003 Analogue, Mixed Signal, LSI

The AD7655 is the newest member of Analog Devices' family of PulSAR high-performance successive approximation register (SAR) analog-to-digital converters (ADCs). Claimed to be low-priced, the AD7655 combines four 16-bit channels of the industry's fastest conversion into a low-profile 48-lead LQFP or LFCSP package.

For use in multichannel and multiplexed applications that demand accuracy, small package size, and low cost, the company says it guarantees a combination of specifications that, until now, was unavailable at this cost: four input channels, 1 MSPS sampling rate, 86 dB SNR at 100 kHz, single-supply operation, and a 0-5 V analog input range.

Two on-chip low-noise, wideband track-and-hold amplifiers, each preceded by a two-channel multiplexer, provide simultaneous sampling capability.

With no pipeline delay, this PulSAR ADC is suited for applications using multi-channel data acquisition, and zero-latency control loops in industrial process control, test and measurement and motor control systems. Power consumption scales with throughput rate.

For more information contact Analog Data Products SA, 011 259 9400.

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