LTC2451 Datasheet | Linear Technology

Features n GND to VCC Single-Ended Input Range n 0.02LSB RMS Noise n 2LSB INL, No Missing Codes n 1LSB Offset Error n 4LSB Full-Scale Error n Programmable 30/60 Conversions per Second n Single Conversion Settling Time for Multiplexed Applications n Single-Cycle Operation with Auto Shutdown n 400µA Supply Current n 0.2µA Sleep Current n Internal Oscillator- No External ponents Required n Single Supply, 2.7V to 5.5V Operation n 2-Wire I2C Interface n Ultra-Tiny 3mm × 2mm DFN or TSOT-23 Package APPLICATIONS n System Monitoring n Environmental Monitoring n Direct Temperature Measurements n Instrumentation n Industrial Process Control n Data Acquisition n Embedded ADC Upgrades L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. No Latency ∆∑ and Easy Drive are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 6208279, 6411242, 7088280, 7164378. Ultra-Tiny, 16-Bit ∆∑ ADC with I2C Interface DESCRIPTION The LTC®2451 is an ultra-tiny, 16-bit, analog-to-digital converter. The LTC2451 uses a single 2.7V to 5.5V supply, accepts a single-ended analog input voltage and municates through an I2C interface. The converter is available in an 8-pin, 3mm × 2mm DFN or TSOT-23 package. It includes an integrated oscillator that does not require any external ponents. It uses a delta-sigma modulator as a converter core and provides single-cycle settling time for multiplexed applications. The LTC2451 includes a proprietary input sampling scheme that reduces the average input sampling current several orders of magnitude lower than conventional ∆∑ converters. The LTC2451 is capable of up to 60 conversions per second and, due to the very large oversampling ratio, has extremely relaxed antialiasing requirements. In the 30Hz mode, the LTC2451 includes continuous internal offset calibration...