LTC2450-1 Easy-to-Use, Ultra-Tiny 16-Bit ADC FEATURES DESCRIPTION n The LTC 2450-1 is a low power, ultra-tiny 16-bit analog- GND to V Single-Ended Input Range CC n to-digital converter designed for space constrained ap- 60 Conversions Per Second n plications requiring 16-bit performance. The LTC2450-1 0.02LSB RMS Noise n uses a single 2.7V to 5.5V supply, accepts a single-ended 16-Bits, No Missing Codes n analog input voltage, and communicates through an SPI 0.5mV Offset Error n interface. It includes an integrated oscillator that does 4LSB Full-Scale Error n not require any external components. The delta-sigma Single Conversion Settling Time for Multiplexed modulator converter core provides single-cycle settling Applications n time for multiplexed applications. The converter is avail- Single Cycle Operation with Auto Shutdown n able in a 6-pin, 2mm 2mm DFN package. The LTC2450-1 350A Supply Current n implements a proprietary input sampling scheme that 50nA Sleep Current n reduces the average input sampling current several orders Internal OscillatorNo External Components of magnitude. Required n Single Supply, 2.7V to 5.5V Operation The LTC2450-1 is capable of up to 60 conversions per n SPI Interface second and, due to the very large oversampling ratio, has n Ultra-Tiny, 2mm 2mm DFN Package extremely relaxed antialiasing requirements. The converter uses its power supply voltage as the reference voltage and APPLICATIONS the single-ended, rail-to-rail input voltage range extends n from GND to V . System Monitoring CC n Environmental Monitoring Following a conversion, the LTC2450-1 can automatically n Direct Temperature Measurements enter a sleep mode and reduce its power to less than n Instrumentation 500nA. At an output rate of 1Hz, the LTC2450-1 consumes n Industrial Process Control an average of less than 25W from a 2.7V supply. n Data Acquisition L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. Easy Drive n Embedded ADC Upgrades is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 6208279, 6411242, 7088280, 7164378. TYPICAL APPLICATION Integral Nonlinearity 3.0 V = V = 3V CC REF 2.5 2.0 2.7 TO 5.5V 1.5 0.1F 10F 1.0 0.5 T = 45C, 25C, 90C V 0 A CC CS CLOSE TO 0.5 1k CHIP SCK 3-WIRE SPI LTC2450-1 V 1.0 IN INTERFACE SDO 1.5 SENSE 0.1F 2.0 GND 24501 TA01 2.5 3.0 0 1.0 1.5 2.0 2.5 3.0 0.5 INPUT VOLTAGE (V) 24501 G02 24501fc 1 INL (LSB)LTC2450-1 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Notes 1, 2) Supply Voltage (V ) ...................................0.3V to 6V TOP VIEW CC Analog Input Voltage (V ) ........... 0.3V to (V + 0.3V) IN CC 6 SCK V 1 CC Digital Input Voltage ..................... 0.3V to (V + 0.3V) CC 7 5 V 2 SDO IN Digital Output Voltage .................. 0.3V to (V + 0.3V) CC GND 3 4 CS Operating Temperature Range LTC2450C-1 ............................................. 0C to 70C DC PACKAGE 6-LEAD (2mm 2mm) PLASTIC DFN LTC2450I-1 ..........................................40C to 85C T = 125C, = 102C/W JMAX JA Storage Temperature Range ...................65C to 150C EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB ORDER INFORMATION Lead Free Finish TAPE AND REEL (MINI) TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC2450CDC-1 TRMPBF LTC2450CDC-1 TRPBF LDBZ 6-Lead (2mm 2mm) Plastic DFN 0C to 70C LTC2450IDC-1 TRMPBF LTC2450IDC-1 TRPBF LDBZ 6-Lead (2mm 2mm) Plastic DFN 40C to 85C TRM = 500 pieces. *Temperature grades are identi ed by a label on the shipping container. Consult LTC Marketing for parts speci ed with wider operating temperature ranges. Consult LTC Marketing for information on lead based nish parts. For more information on lead free part marking, go to: