LTC2312-14 14-Bit, 500ksps Serial Sampling ADC in TSOT FEATURES DESCRIPTION n 500ksps Throughput Rate The LTC 2312-14 is a 14-bit, 500ksps, serial sampling n No Cycle Latency A/D converter that draws only 3.2mA from a single 3V n Guaranteed 14-Bit No Missing Codes or 5V supply. The LTC2312-14 contains an integrated n Single 3V or 5V Supply low drift reference and reference buffer providing a low n Low Noise: 77.5dB SNR cost, high performance (20ppm/C maximum) and space n Low Power: 9mW at 500ksps and 3V Supply saving solution. The LTC2312-14 achieves outstanding n Low Drift (20ppm/C Maximum) 2.048V or 4.096V AC performance of 77dB SINAD and 85dB THD while Internal Reference sampling at 500ksps. The extremely high sample rate-to- n Sleep Mode with < 1A Typical Supply Current power ratio makes the LTC2312-14 ideal for compact, low n Nap Mode with Quick Wake-Up < 1 Conversion power, high speed systems. The supply current decreases n Separate 1.8V to 5V Digital I/O Supply at lower sampling rates as the device automatically enters n High Speed SPI-Compatible Serial I/O nap mode after conversions. n Guaranteed Operation from 40C to 125C The LTC2312-14 has a high speed SPI-compatible serial n 8-Lead TSOT-23 Package interface that supports 1.8V, 2.5V, 3V and 5V logic. The fast 500ksps throughput with no-cycle latency makes APPLICATIONS the LTC2312-14 ideally suited for a wide variety of high n Communication Systems speed applications. n High Speed Data Acquisition Complete 14-/12-Bit Pin-Compatible SAR ADC Family n Handheld Terminal Interface 500ksps 2.5Msps 4.5Msps 5Msps n Medical Imaging 14-Bit LTC2312-14 LTC2313-14 LTC2314-14 n Uninterrupted Power Supplies 12-Bit LTC2312-12 LTC2313-12 LTC2315-12 n Battery Operated Systems Power 3V/5V 9mW/15mW 14mW/25mW 18mW/31mW 19mW/32mW n Automotive L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION 16k Point FFT, f = 500ksps, f = 259kHz S IN 0 5V Supply, Internal Reference, 500ksps, 14-Bit Sampling ADC V = 5V DD SNR = 77.5dBFS 20 5V SINAD = 77dBFS LTC2312-14 2.2F THD = 85dB 40 SFDR = 88dB V CONV DD 60 2.2F SERIAL DATA LINK TO 80 REF ASIC, PLD, MPU, DSP SCK OR SHIFT REGISTERS 100 GND SDO 120 DIGITAL OUTPUT SUPPLY ANALOG INPUT A OV IN DD 1.8V TO 5V 0V TO 4.096V 140 2.2F 160 231214 TA01 0 50 100 200 250 150 INPUT FREQUENCY (kHz) 231214 TA01b 231214fa 1 For more information www.linear.com/LTC2312-14 AMPLITUDE (dBFS)LTC2312-14 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Notes 1, 2) Supply Voltage (V , OV ) .......................................6V DD DD Reference (REF) and Analog Input (A ) Voltage IN TOP VIEW (Note 3) ......................................(0.3V) to (V + 0.3V) DD V 1 8 CONV DD REF 2 7 SCK Digital Input Voltage (Note 3) ... (0.3V) to (OV + 0.3V) DD GND 3 6 SDO Digital Output Voltage ............. (0.3V) to (OV + 0.3V) DD A 4 5 OV IN DD Power Dissipation ...............................................100mW TS8 PACKAGE 8-LEAD PLASTIC TSOT-23 Operating Temperature Range T = 150C, = 195C/W JMAX JA LTC2312C ................................................ 0C to 70C LTC2312I ..............................................40C to 85C LTC2312H .......................................... 40C to 125C Storage Temperature Range .................. 65C to 150C Lead Temperature Range (Soldering, 10 sec) ........300C ORDER INFORMATION Lead Free Finish TAPE AND REEL (MINI) TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC2312CTS8-14 TRMPBF LTC2312CTS8-14 TRPBF LTFZK 8-Lead Plastic TSOT-23 0C to 70C LTC2312ITS8-14 TRMPBF LTC2312ITS8-14 TRPBF LTFZK 8-Lead Plastic TSOT-23 40C to 85C LTC2312HTS8-14 TRMPBF LTC2312HTS8-14 TRPBF LTFZK 8-Lead Plastic TSOT-23 40C to 125C TRM = 500 pieces. *Temperature grades are identified by a label on the shipping container. Consult LTC Marketing for parts specified with wider operating temperature ranges. Consult LTC Marketing for information on lead based finish parts. For more information on lead free part marking, go to: