LTC2483

LTC2483 16-Bit ∆Σ ADC with Easy Drive Input Current Cancellation and I2C Interface FEATURES Easy Drive Technology Enables Rail-to-Rail Inputs with Zero Differential Input Current ■ Directly Digitizes High Impedance Sensors with Full Accuracy ■ 600nV RMS Noise, Independent of V REF ■ GND to V www.DataSheet4U.com CC Input/Reference Common Mode Range ■ 2-Wire I2C Interface ■ Simultaneous 50Hz/60Hz Rejection ■ 2ppm (0.25LSB) INL, No Missing Codes ■ 1ppm Offset and 15ppm Full-Scale Error ■ No Latency: Digital Filter Settles in a Single Cycle ■ Single Supply 2.7V to 5.5V Operation ■ Internal Oscillator ■ Six Addresses Available and One Global Address for Synchronization ■ Available in a Tiny (3mm × 3mm) 10-Lead DFN Package ■ DESCRIPTIO The LTC®2483 combines a 16-bit plus sign No Latency ∆ΣTM analog-to-digital converter with patented Easy DriveTM technology and I2C digital interface. The patented sampling scheme eliminates dynamic input current errors and the shortcomings of on-chip buffering through automatic cancellation of differential input current. This allows large external source impedances and input signals, with rail-torail input range to be directly digitized while maintaining exceptional DC accuracy. The LTC2483 allows a wide common mode input range (0V to VCC) independent of the reference voltage. The reference can be as low as 100mV or can be tied directly to VCC. The noise level is 600nV RMS independent of VREF. This allows direct digitization of low level signals wi...