14-bit, 4.5-Msps SAR ADC integrates precision reference in an 8-lead TSOT-23 package
The small SAR ADC integrates a precision 2.048 V/4.096 V reference with 7ppm/°C typical and guaranteed 20ppm/°C maximum temperature coefficient into an 8 mm² footprint. The LTC2314-14 operates from a 3 V or 5 V supply and features the lowest power dissipation (18 mW at 3 V or 31 mW at 5 V) compared to other competitive parts on the market. With its serial SPI interface, tiny footprint and low power dissipation, the LTC2314-14 is ideal for a wide range of portable and space-constrained applications, including medical devices, communications systems and battery-operated systems.
Also available is the LTC2315-12, a 12-bit pin- and software-compatible version of the LTC2314-14, featuring a fast 5 Msps sample rate. The LTC2314-14 and LTC2315-12 lead a family of 14- and 12-bit SAR ADCs featuring sample rates from 500 ksps to 5 Msps with 77.5 dB SNR at 14 bits and 73 dB SNR at 12 bits resolution. Accurate DC specifications include a maximum INL and DNL of ±3.75LSB and ±0.99LSB at 14-bits, and ±1.25LSB and ±0.99LSB at 12-bits, respectively. The complete LTC2314 SAR ADC family offers single-ended unipolar inputs, small 8-lead TSOT-23 packages, precision integrated reference and low power dissipation with flexible 3 V or 5 V supply operation, along with nap and sleep modes for optimizing the power within a system.
The LTC2314-14 and LTC2315-12 are available in commercial, industrial and automotive (-40 to 125°C) temperature grades. Pricing begins at $9.52 each for the LTC2314-14 and $5.17 each for the LTC2315-12 in 1,000-piece quantities. The DC1563A evaluation board for the LTC2314 SAR ADC family is available at www.linear.com/demo.
More information about the LTC2314-14 and LTC2315-12 SAR ADC at
www.linear.com/product/LTC2314-14 and www.linear.com/product/LTC2315-12
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