LTC2370-16 16-Bit, 2Msps, Pseudo- Differential Unipolar SAR ADC with 94dB SNR FEATURES DESCRIPTION n 2Msps Throughput Rate The LTC 2370-16 is a low noise, low power, high speed n 0.85LSB INL (Max) 16-bit successive approximation register (SAR) ADC. n Guaranteed 16-Bit No Missing Codes Operating from a 2.5V supply, the LTC2370-16 has a 0V n Low Power: 19mW at 2Msps, 19W at 2ksps pseudo-differential unipolar input range with V to V REF REF n 94dB SNR (Typ) at f = 2kHz ranging from 2.5V to 5.1V. The LTC2370-16 consumes IN n 112dB THD (Typ) at f = 2kHz only 19mW and achieves 0.85LSB INL maximum, no IN n Guaranteed Operation to 125C missing codes at 16 bits with 94dB SNR. n 2.5V Supply The LTC2370-16 has a high speed SPI-compatible serial n Pseudo-Differential Unipolar Input Range: 0V to V REF interface that supports 1.8V, 2.5V, 3.3V and 5V logic while n V Input Range from 2.5V to 5.1V REF also featuring a daisy-chain mode. The fast 2Msps through- n No Pipeline Delay, No Cycle Latency put with no cycle latency makes the LTC2370-16 ideally n 1.8V to 5V I/O Voltages suited for a wide variety of high speed applications. An n SPI-Compatible Serial I/O with Daisy-Chain Mode internal oscillator sets the conversion time, easing external n Internal Conversion Clock timing considerations. The LTC2370-16 automatically pow- n 16-Lead MSOP and 4mm 3mm DFN Packages ers down between conversions, leading to reduced power dissipation that scales with the sampling rate. 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 = 2Msps, f = 2kHz S IN 0 2.5V 1.8V TO 5V SNR = 94dB 20 THD = 112dB SINAD = 93.9dB 10F 0.1F 40 SFDR = 117dB V REF 60 + V OV DD DD 5.1 CHAIN 0V 80 + LT 6202 IN RDL/SDI SDO 100 LTC2370-16 10nF SCK BUSY 120 IN SAMPLE CLOCK CNV REF REF GND 140 237016 TA01a 160 2.5V TO 5.1V 47F (X5R, 0805 SIZE) 180 0 100 200 300 400 500 600 700 800 900 1000 FREQUENCY (kHz) 237016 TA01b 237016fa 1 AMPLITUDE (dBFS)LTC2370-16 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 LTC2370C ................................................ 0C to 70C Analog Input Voltage (Note 3) LTC2370I .............................................40C to 85C + IN , IN .........................(GND 0.3V) to (REF + 0.3V) LTC2370H .......................................... 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 LTC2370CMS-16 PBF LTC2370CMS-16 TRPBF 237016 16-Lead Plastic MSOP 0C to 70C LTC2370IMS-16 PBF LTC2370IMS-16 TRPBF 237016 16-Lead Plastic MSOP 40C to 85C LTC2370HMS-16 PBF LTC2370HMS-16 TRPBF 237016 16-Lead Plastic MSOP 40C to 125C LTC2370CDE-16 PBF LTC2370CDE-16 TRPBF 23706 16-Lead (4mm 3mm) Plastic DFN 0C to 70C LTC2370IDE-16 PBF LTC2370IDE-16 TRPBF 23706 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: