LTC2314 Serial Sampling A/D Converter

By Linear Technology 171

LTC2314 Serial Sampling A/D Converter

Linear Technology's LTC2314-14 is a 14-bit, 4.5 MSPS, serial sampling A/D converter that draws only 6.2 mA from a wide-range analog supply, adjustable from 2.7 V to 5.25 V. The LTC2314-14 contains an integrated band-gap and reference buffer, which provides a low cost, high performance (20 ppm/°C max), space-saving applications solution. The LTC2314-14 achieves outstanding AC performance of 77 dB SINAD and -85 dB THD while sampling a 500 kHz input frequency. The extremely high sample, rate-to-power ratio makes the LTC2314-14 ideal for compact, low power, high-speed systems. The LTC2314-14 also provides both nap and sleep modes for further optimization of the device power within a system.

The LTC2314-14 has a high-speed, SPI-compatible serial interface that supports 1.8 V, 2.5 V, 3 V, and 5 V logic. The fast 4.5 Msps throughput makes the LTC2314-14 ideally suited for a wide variety of high-speed applications.

Features Applications
  • 4.5 MSPS throughput rate
  • Guaranteed 14-bit with no missing codes
  • Internal reference: 2.048 V / 4.096 V span
  • Low noise: 77.5 dB SNR
  • Low power: 6.2 mA at 4.5 MSPS and 5 V
  • Dual supply range: 3 V / 5 V operation
  • Communication systems
  • Handheld terminal interfaces
  • Medical imaging
  • Uninterrupted power supplies
  • Battery operated systems
  • Automotive