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News

Low power consumption 16-bit ADC


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Linear Technology
: 16 September, 2010  (New Product)
Linear Technology is supplying a new SAR ADC with a serial interface featuring 16-bit operation and low power consumption of just 13mW
Low power consumption 16-bit ADC
Linear Technology introduces the LTC2383-16, an easy-to-use, low power 16-bit 1Msps serial SAR ADC with guaranteed specifications over the -40C to 125C temperature range. Consuming just 13mW from a single 2.5V supply, the LTC2383-16 achieves an impressive 92dB SNR and -106dB THD from a fully differential +2.5V input range while maintaining a maximum +2LSB INL and no missing codes. Available in small 3mm x 4mm DFN and MSOP-16 packages, the LTC2383-16 is ideal for space-constrained applications that require low power, including those using multiple ADCs per board.

Complementing the LTC2383-16 are the pin- and software-compatible LTC2382-16 (500ksps) and LTC2381-16 (250ksps). These devices feature a proprietary sampling architecture that allows the ADCs to begin acquiring the next sample during the current conversion. This greatly extends the acquisition time and allows the use of extremely low power ADC drivers, further reducing the overall power budget.

These user friendly ADCs feature a simple digital timing interface and require few external components. All feature a shutdown mode that reduces power dissipation to 1.25uW when not converting. True no latency operation enables accurate one-shot measurements even after lengthy idle periods with no minimum sample rate required. The flexible serial SPI interface supports I/O voltages from 1.8V to 5V. To support robust customer designs with long product lifetimes, all key AC and DC specs including THD and sleep current are guaranteed.

To achieve uncompromised AC performance, we recommend the fast settling LT6350 ADC driver for single-ended to differential conversion of input signals. We also recommend the LTC6652-2.5, a precision external reference with high accuracy, low power and small size.
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