Datasheet LTC2389-18 (Analog Devices) - 3

LTC2389-18
a nalog inpuT The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 4) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN+ Absolute Input Range (IN+) (Note 5) l –0.1 VREF + 0.1 V VIN– Absolute Input Range (IN–) Fully Differential (Note 5) l –0.1 VREF + 0.1 V Pseudo-Differential Unipolar (Note 5) l –0.1 0 0.1 V Pseudo-Differential Bipolar (Note 5) l VREF/2 – 0.1 VREF/2 VREF/2 + 0.1 V VIN+ – VIN– Input Differential Voltage Range Fully Differential l –VREF VREF V Pseudo-Differential Unipolar l 0 VREF V Pseudo-Differential Bipolar l –VREF/2 VREF/2 V VCM Input Common Mode Voltage Range Fully Differential l VREF/2 – 0.1 VREF/2 VREF/2 + 0.1 V IIN Analog Input Leakage Current C- and I-Grades l –1 1 µA H-Grade l –2 2 µA CIN Analog Input Capacitance Sample Mode 45 pF Hold Mode 5 pF CMRR Input Common Mode Rejection Ratio 70 dB VIHCNVST CNVST High Level Input Voltage l 1.5 V VILCNVST CNVST Low Level Input Voltage l 0.5 V IINCNVST CNVST Input Current VIN = 0V to VDD l –25 –60 µA
c onverTer characTerisTics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 4) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Resolution l 18 Bits No Missing Codes l 18 Bits Transition Noise Fully Differential 0.76 LSBRMS Pseudo-Differential Unipolar 1.5 LSBRMS Pseudo-Differential Bipolar 1.5 LSBRMS INL Integral Linearity Error Fully Differential (Note 6) l –3 ±1.25 3 LSB Pseudo-Differential Unipolar (Note 6) l –3 ±1.25 3 LSB Pseudo-Differential Bipolar (Note 6) l –3 ±1.25 3 LSB DNL Differential Linearity Error Fully Differential l –0.9 ±0.3 0.9 LSB Pseudo-Differential Unipolar l –0.9 ±0.3 0.9 LSB Pseudo-Differential Bipolar l –0.9 ±0.3 0.9 LSB ZSE Zero-Scale Error Fully Differential (Note 7) l –10 0 10 LSB Pseudo-Differential Unipolar (Note 7) l –15 0 15 LSB Pseudo-Differential Bipolar (Note 7) l –15 0 15 LSB Zero-Scale Error Drift ±0.05 ppm/°C FSE Full-Scale Error External Reference (Note 7) l 0.15 % Internal Reference (Note 7) 0.15 % Full-Scale Error Drift ±5 ppm/°C 238918f 3 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Analog Input Converter Characteristics Dynamic Accuracy Reference Characteristics Digital Inputs And Digital Outputs Power Requirements Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Timing Diagrams Applications Information Package Description Typical Application Related Parts