Linear launches smallest 14-Bit, 4.5Msps SAR ADC

Linear Technology has introduced the LTC2314-14, a 14-bit 4.5Msps successive approximation register (SAR) ADC in a tiny 8-lead TSOT-23 package, offering a 90% reduction in size over competing solutions for space-conscious applications. This small SAR ADC integrates a precision 2.048V/4.096V reference with 7ppm/°C typical and guaranteed 20ppm/°C maximum temperature coefficient into an 8mm² footprint.

The LTC2314-14 operates from a 3V or 5V supply and features power dissipation of 18mW at 3V or 31mW at 5V. With its serial SPI interface, a tiny footprint and very low power dissipation, the device is suitable 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 5Msps sample rate. The LTC2314-14 and LTC2315-12 lead a family of 14- and 12-bit SAR ADCs featuring sample rates from 500ksps to 5Msps with 77.5dB SNR at 14 bits and 73dB 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 3V or 5V supply operation, along with nap and sleep modes for optimizing the power within a system.

The LTC2314-14 and LTC2315-12 are available today in commercial, industrial and automotive (-40°C to 125°C) temperature grades.


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