LTC2368-16 16-Bit, 1Msps, Pseudo- Differential Unipolar SAR ADC with 94.7dB SNR FEATURES DESCRIPTION n 1Msps Throughput Rate The LTC 2368-16 is a low noise, low power, high speed n 0.75LSB INL (Max) 16-bit successive approximation register (SAR) ADC. n Guaranteed 16-Bit No Missing Codes Operating from a 2.5V supply, the LTC2368-16 has a 0V n Low Power: 13.5mW at 1Msps, 13.5W at 1ksps pseudo-differential unipolar input range with V to V REF REF n 94.7dB SNR (Typ) at f = 2kHz ranging from 2.5V to 5.1V. The LTC2368-16 consumes IN n 118dB THD (Typ) at f = 2kHz only 13.5mW and achieves 0.75LSB INL maximum, no IN n Guaranteed Operation to 125C missing codes at 16 bits with 94.7dB SNR. n 2.5V Supply a high speed SPI-compatible serial The LTC2368-16 has n Pseudo-Differential Unipolar Input Range: 0V to V REF interface that supports 1.8V, 2.5V, 3.3V and 5V logic n V Input Range from 2.5V to 5.1V REF while also featuring a daisy-chain mode. The fast 2Msps n No Pipeline Delay, No Cycle Latency throughput with no cycle latency makes the LTC2368-16 n 1.8V to 5V I/O Voltages ideally suited for a wide variety of high speed applications. n SPI-Compatible Serial I/O with Daisy-Chain Mode An internal oscillator sets the conversion time, easing exter- n Internal Conversion Clock nal timing considerations. The LTC2368-16 automatically n 16-Lead MSOP and 4mm 3mm DFN Packages powers down between conversions, leading to reduced dissipation that scales with the sampling rate. power APPLICATIONS L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and n Medical Imaging SoftSpan is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 7705765. n High Speed Data Acquisition n Portable or Compact Instrumentation n Industrial Process Control n Low Power Battery-Operated Instrumentation n ATE TYPICAL APPLICATION 32k Point FFT f = 1Msps, f = 2kHz S IN 0 2.5V 1.8V TO 5V SNR = 94.7dB 20 THD = 118dB SINAD = 94.7dB 10F 0.1F 40 SFDR = 119dB V REF 60 + V OV DD DD 10 CHAIN 0V 80 + LT 6202 IN RDL/SDI SDO 100 LTC2368-16 10nF SCK BUSY 120 IN SAMPLE CLOCK CNV REF REF GND 140 236816 TA01a 160 2.5V TO 5.1V 47F (X5R, 0805 SIZE) 180 0 100 200 300 400 500 FREQUENCY (kHz) 236816 TA01b 236816f 1 AMPLITUDE (dBFS)LTC2368-16 ABSOLUTE MAXIMUM RATINGS (Notes 1, 2) Supply Voltage (V ) ...............................................2.8V Power Dissipation .............................................. 500mW DD Supply Voltage (OV ) ................................................6V Operating Temperature Range DD Reference Input (REF) .................................................6V LTC2368C ................................................ 0C to 70C Analog Input Voltage (Note 3) LTC2368I .............................................40C to 85C + IN , IN .........................(GND 0.3V) to (REF + 0.3V) LTC2368H .......................................... 40C to 125C Digital Input Voltage Storage Temperature Range .................. 65C to 150C (Note 3) .......................... (GND 0.3V) to (OV + 0.3V) DD Digital Output Voltage (Note 3) .......................... (GND 0.3V) to (OV + 0.3V) DD PIN CONFIGURATION TOP VIEW CHAIN 1 16 GND TOP VIEW V 2 15 OV DD DD CHAIN 1 16 GND GND 3 14 SDO V 2 15 OV DD DD + 17 GND 3 14 SDO IN 4 13 SCK + IN 4 13 SCK GND IN 5 12 RDL/SDI IN 5 12 RDL/SDI GND 6 11 GND 6 11 BUSY BUSY REF 7 10 GND REF 7 10 GND REF 8 9 CNV REF 8 9 CNV MS PACKAGE 16-LEAD PLASTIC MSOP DE PACKAGE 16-LEAD (4mm 3mm) PLASTIC DFN T = 150C, = 110C/W JMAX JA T = 150C, = 40C/W JMAX JA EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC2368CMS-16 PBF LTC2368CMS-16 TRPBF 236816 16-Lead Plastic MSOP 0C to 70C LTC2368IMS-16 PBF LTC2368IMS-16 TRPBF 236816 16-Lead Plastic MSOP 40C to 85C LTC2368HMS-16 PBF LTC2368HMS-16 TRPBF 236816 16-Lead Plastic MSOP 40C to 125C LTC2368CDE-16 PBF LTC2368CDE-16 TRPBF 23686 16-Lead (4mm 3mm) Plastic DFN 0C to 70C LTC2368IDE-16 PBF LTC2368IDE-16 TRPBF 23686 16-Lead (4mm 3mm) Plastic DFN 40C to 85C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: