LTC2489 FuncTional block DiagraM INTERNAL VCC OSCILLATOR GND AUTOCALIBRATION fO AND CONTROL (INT/EXT) REF+ REF– CH0 – + 1.7k IN+ CH1 DIFFERENTIAL SDA CH2 MUX 3RD ORDER IN– I2C SCL CH3 ∆Σ MODULATOR INTERFACE CA0 COM CA1 DECIMATING FIR ADDRESS 2489 BD 2489fb For more information www.linear.com/LTC2489 9 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Converter Characteristics Analog Input and Reference I2C Inputs and Digital Outputs Power Requirements Digital Inputs and Digital Outputs I2C Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Applications Information Package Description Revision History Typical Application Related Parts