20-Bit No Latency ADCs with Differential Input and Differential Reference Features: Low Supply Current (200µA in Conversion Mode and 4µA in Autosleep Mode) Differential Input and Differential Reference with GND to VCC Common Mode Range 3ppm INL, No Missing Codes 10ppm Full-Scale Error and 1ppm Offset 0.56ppm Noise, 20.8 ENOBs No Latency: Digital Filter Settles in a Single Cycle. Each Conversion Is Accurate, Even After an Input Step Single Supply 2.7V to 5.5V Operation Internal Oscillator—No External Components Required 110dB Min, 50Hz/60Hz Notch Filter Pin Compatible with 24-Bit LTC2410/LTC2411