Datasheet LTC1863, LTC1867 (Analog Devices) - 4

LTC1863/LTC1867
ANALOG INPUT The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 5) LTC1863/LTC1867/LTC1867A SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Analog Input Range Unipolar Mode (Note 9) l 0-4.096 V Bipolar Mode l ±2.048 V CIN Analog Input Capacitance for CH0 to Between Conversions (Sample Mode) 32 pF CH7/COM During Conversions (Hold Mode) 4 pF tACQ Sample-and-Hold Acquisition Time l 1.5 1.1 µs Input Leakage Current On Channels, CHX = 0V or VDD l ±1 µA
INTERNAL REFERENCE CHARACTERISTICS (Note 5) LTC1863/LTC1867/LTC1867A PARAMETER CONDITIONS MIN TYP MAX UNITS
VREF Output Voltage IOUT = 0 2.48 2.5 2.52 V VREF Output Tempco IOUT = 0 ±15 ppm/°C VREF Line Regulation 4.75V ≤ VDD ≤ 5.25V 0.43 mV/V VREF Output Resistance IOUT  ≤0.1mA 6 kΩ REFCOMP Output Voltage IOUT = 0 4.096 V
DIGITAL INPUTS AND DIGITAL OUTPUTS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 5) LTC1863/LTC1867/LTC1867A SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIH High Level Input Voltage VDD = 5.25V l 2.4 V VIL Low Level Input Voltage VDD = 4.75V l 0.8 V IIN Digital Input Current VIN = 0V to VDD l ±10 µA CIN Digital Input Capacitance 2 pF VOH High Level Output Voltage (SDO) VDD = 4.75V, IO = –10µA 4.75 V VDD = 4.75V, IO = –200µA l 4 4.74 V VOL Low Level Output Voltage (SDO) VDD = 4.75V, IO = 160µA 0.05 V VDD = 4.75V, IO = 1.6mA l 0.1 0.4 V ISOURCE Output Source Current SDO = 0V –32 mA ISINK Output Sink Current SDO = VDD 19 mA Hi-Z Output Leakage CS/CONV = High, SDO = 0V or VDD l ±10 µA Hi-Z Output Capacitance CS/CONV = High (Note 10) l 15 pF Data Format Unipolar Straight Binary Bipolar Two’s Complement Rev. E 4 For more information www.analog.com Document Outline Features Applications Block Diagram Description Absolute Maximum Ratings Order Information Pin Configuration Converter Characteristics Dynamic Accuracy Analog Input Internal Reference Characteristics Digital Inputs and Digital Outputs Power Requirements Timing Characteristics Typical Performance Characteristics Pin Functions Typical Connection Diagram Test Circuits Timing Diagrams Applications Information Package Description Revision History Related Parts