LTC2314-14 14-Bit, 4.5Msps Serial Sampling ADC in TSOT FEATURESDESCRIPTION n 4 . 5Msps Throughput Rate The LTC®2314-14 is a 14-bit, 4.5Msps, serial sampling A/D n Guaranteed 14-Bit No Missing Codes converter that draws only 6.2mA from a wide range analog n Internal Reference: 2.048V/4.096V Span supply adjustable from 2.7V to 5.25V. The LTC2314-14 n Low Noise: 77.5dB SNR contains an integrated bandgap and reference buffer which n Low Power: 6.2mA at 4.5Msps and 5V provide a low cost, high performance (20ppm/°C max) n Dual Supply Range: 3V/5V operation and space saving applications solution. The LTC2314-14 n Sleep Mode with < 1µA Typical Supply Current achieves outstanding AC performance of 77dB SINAD and n Nap Mode with Quick Wake-up < 1 conversion –85dB THD while sampling a 500kHz input frequency. n Separate 1.8V to 5V Digital I/O Supply The extremely high sample rate-to-power ratio makes the n High Speed SPI-Compatible Serial I/O LTC2314-14 ideal for compact, low power, high speed n Guaranteed Operation from –40°C to 125°C systems. The LTC2314-14 also provides both nap and n 8-Lead TSOT-23 Package sleep modes for further optimization of the device power within a system. APPLICATIONS The LTC2314-14 has a high-speed SPI-compatible serial n Communication Systems interface that supports 1.8V, 2.5V, 3V and 5V logic. The n High Speed Data Acquisition fast 4.5Msps throughput makes the LTC2314-14 ideally n Handheld Terminal Interface suited for a wide variety of high speed applications. n Medical Imaging Complete 14-/12-Bit Pin-Compatible SAR ADC Family n Uninterrupted Power Supplies 500ksps2.5Msps4.5Msps5Msps n Battery Operated Systems 14-Bit LTC2312-14 LTC2313-14 LTC2314-14 n Automotive 12-Bit LTC2312-12 LTC2313-12 LTC2315-12 L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Power 3V/5V 9mW/15mW 14mW/25mW 18mW/31mW 19mW/32mW Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION5V Supply, Internal Reference, 4.5Msps, 14-bit Sampling ADC32k Point FFT, fS = 4.5Msps, fIN = 500kHz 5V 0 V 2.2µF LTC2314-14 DD = 5V –20 SNR = 77.5dBFS V SINAD = 76.9dBFS DD CS THD = 84.9dB 2.2µF –40 SERIAL DATA LINK TO SFDR = 88.1dB REF SCK ASIC, PLD, MPU, DSP –60 OR SHIFT REGISTERS –80 GND SDO –100 ANALOG INPUT DIGITAL OUTPUT SUPPLY A AMPLITUDE (dBFS) 0V TO 4.096V IN OVDD 1.8V TO 5V 2.2µF –120 –160 231414 TA01 –1400 250 500 750 100012501500175020002250 FREQUENCY (kHz) 231414 TA01a 231414fa For more information www.linear.com/LTC2314-14 1