March 12, 2013 – Linear Technology Korea (CEO Hong Sa-kwak) announced the launch of a 14-bit 4.5Msps SAR (successive approximation register) ADC in a compact 8-pin TSOT23 package (product name: LTC2314-14). This product is designed for space-constrained applications and reduces size by up to 90% compared to competing solutions. The compact SAR ADC integrates a 2.048V/4.096V reference with a typical temperature coefficient of 7ppm/ºC and guaranteed temperature coefficient up to 20ppm/ºC into an 8mm² footprint. The LTC2314-14 operates from 3V or 5V supplies and provides the lowest power consumption (18mA at 3V or 31mW at 5V) compared to commercially available competitor products. With features including a serial SPI interface, compact footprint, and ultra-low power consumption, the LTC2314-14 is ideal for a wide range of portable and space-constrained applications including medical devices, communication systems, and battery-powered systems.

The 12-bit LTC2315-12 is also currently available and is pin and software compatible with the LTC2314-14, offering a fast sample rate of 5Msps. The LTC2314-14 and LTC2315-12 are follow-on products to the 14-bit and 12-bit SAR ADC product family that provides sample rates in the range of 500ksps to 5Msps with 77.5dB SNR at 14-bit resolution and 73dB SNR at 12-bit resolution. The precise DC specifications show maximum INL and DNL values of ±3.75LSB and ±0.99LSB at 14-bit resolution, and ±1.25LSB and ±0.99LSB respectively at 12-bit resolution. The LTC2314 SAR ADC product family features single-ended unipolar input, compact 8-pin TSOT-23 package, integrated precision reference, 3V or 5V supply operation with low power consumption, and offers nap mode and standby mode for power optimization within the system.

The LTC2314-14 and LTC2315-12 are available in commercial, industrial, and automotive (-40oC to 125oC) temperature grades. The LTC2314-14 is priced at $9.52 per unit based on 1,000-unit quantities, and the LTC2315-12 is priced at $5.17 per unit. Information on the DC1563A evaluation board for the LTC2314 SAR ADC product family is available at www.linear.com/demo or through the appropriate Linear office. For more information, see www.linear.com/product/LTC2314-14 and www.linear.com/product/LTC2315-12

Product Features: LTC2314-14 & LTC2315-12
4.5Msps throughput
14-bit No Missing Codes guaranteed
Integrated Reference: 2.048V/4.096V
Low Noise: 77.5dB SNR
Low Power: 6.2mA at 4.5Msps & 5V
Flexible 3V or 5V supply operation
±3.75LSB INL Max (5V), ±0.99LSB DNL Max
Sleep mode providing less than 1μA supply current
Nap mode providing Quick Wake-Up in less than 1 conversion
Individual 1.8V to 5V digital I/O supply
High-speed SPI-compatible serial I/O
Operation guaranteed from –40°C to 125°C
8-pin TSOT-23 package