LTC2471

LTC2471/LTC2473 Selectable 208sps/833sps, 16-Bit I2C ΔΣ ADCs with 10ppm/°C Max Precision Reference Features Description n 16-Bit Resolution n Internal, High Accuracy Reference—10ppm/°C (Max) n Single-Ended (LTC2471) or Differential (LTC2473) n Selectable 208sps/833sps Output Rate n 1mV Offset Error n 0.01% Gain Error n Single Conversion Settling Time Simplifies Multiplexed Applications n Single-Cycle Operation with Auto Shutdown n 3.5mA (Typ) Supply Current n 2µA (Max) Sleep Current n Internal Oscillator—No External Components Required n I2C Interface n Small 12-Lead, 3mm × 3mm DFN and MSOP Packages The LTC®2471/LTC2473 are small, 16-bit analog-to-digital converters with an integrated precision reference and a selectable 208sps or 833sps output rate. They use a single 2.7V to 5.5V supply and communicate through an I2C Interface. The LTC2471 is single-ended with a 0V to VREF input range and the LTC2473 is differential with a ±VREF input range. Both ADCs include a 1.25V integrated reference with 2ppm/°C drift performance and 0.1% initial accuracy. The converters are available in a 12-pin DFN 3mm × 3mm package or an MSOP-12 package. They include an integrated oscillator and perform conversions with no latency for multiplexed applications. The LTC2471/ LTC2473 include a proprietary input sampling scheme that reduces the average input current several orders of magnitude when compared to conventional delta sigma converters. Applications n System Monitoring n Env...