FEATURES
DESCRIPTION
n Up to 2 Differential or 4 Single-Ended Inputs n Easy DriveTM Technology Enables Rail-to-Rail Inputs with Zero Differential Input Current n Directly Digitizes High Impedance Sensors with Full Accuracy n 2-Wire I2C Interface with 9 Addresses Plus One Global Address for Synchronization n 600nV RMS Noise (0.02LSB Transition Noise) n GND to VCC Input/Reference Common Mode Range n Simultaneous 50Hz/60Hz Rejection n 2ppm INL, No Missing Codes n 1ppm Offset and 15ppm Full-Scale Error n No Latency: Digital Filter Settles in a Single Cycle, Even After a New Channel is Selected n Single Supply, 2.7V to 5.5V Operation (0.8mW) n Internal Oscillator n Tiny 4mm × 3mm DFN Package APPLICATIONS
n Direct Sensor Digitizer n Direct Temperature Measurement n Instrumentation n Industrial Process Control The LTC®2489 is a 4-channel (2-channel differential), 16-bit, No Latency DS™ ADC with Easy Drive technology and a 2-wire, I2C interface. The patented sampling scheme eliminates dynamic input current errors and the shortcomings of on-chip buffering through automatic cancellation of differential input current.
Linear Technology
