Datasheet LTC2498 (Analog Devices) - 4

LTC2498
a nalog input anD reFerence The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 3) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Input Voltage Range (IN+ – IN–) Differential/Single-Ended l –FS +FS V FS Full Scale of the Input (IN+ – IN–) Differential/Single-Ended l 0.5VREF V LSB Least Significant Bit of the Output Code l FS/224 REF+ Absolute/Common Mode REF+ Voltage l 0.1 VCC V REF– Absolute/Common Mode REF– Voltage l GND REF+ – V 0.1V VREF Reference Voltage Range (REF+ – REF–) l 0.1 VCC V CS(IN+) IN+ Sampling Capacitance 11 pF CS(IN–) IN– Sampling Capacitance 11 pF CS(VREF) VREF Sampling Capacitance 11 pF I + DC_LEAK(IN ) IN+ DC Leakage Current Sleep Mode, IN+ = GND l –10 1 10 nA I – DC_LEAK(IN ) IN– DC Leakage Current Sleep Mode, IN– = GND l –10 1 10 nA I + DC_LEAK(REF ) REF+ DC Leakage Current Sleep Mode, REF+ = VCC l –100 1 100 nA I – DC_LEAK(REF ) REF– DC Leakage Current Sleep Mode, REF– = GND l –100 1 100 nA tOPEN MUX Break-Before-Make 50 ns QIRR MUX Off Isolation VIN = 2VP-P DC to 1.8MHz 120 dB
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 3) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIH High Level Input Voltage (CS, fO, SDI) 2.7V ≤ VCC ≤ 5.5V (Note 18) l VCC – 0.5 V VIL Low Level Input Voltage (CS, fO, SDI) 2.7V ≤ VCC ≤ 5.5V l 0.5 V VIH High Level Input Voltage (SCK) 2.7V ≤ VCC ≤ 5.5V (Notes 10, 15) l VCC – 0.5 V VIL Low Level Input Voltage (SCK) 2.7V ≤ VCC ≤ 5.5V (Notes 10, 15) l 0.5 V IIN Digital Input Current (CS, fO, SDI) 0V ≤ VIN ≤ VCC l –10 10 µA IIN Digital Input Current (SCK) 0V ≤ VIN ≤ VCC (Notes 10, 15) l –10 10 µA CIN Digital Input Capacitance (CS, fO, SDI) 10 pF CIN Digital Input Capacitance (SCK) (Notes 10, 17) 10 pF VOH High Level Output Voltage (SDO) IO = –800µA (Notes 10, 17) l VCC – 0.5 V VOL Low Level Output Voltage (SDO) IO = 1.6mA (Notes 10, 17) l 0.4 V VOH High Level Output Voltage (SCK) IO = –800µA l VCC – 0.5 V VOL Low Level Output Voltage (SCK) IO = 1.6mA l 0.4 V IOZ Hi-Z Output Leakage (SDO) l –10 10 µA
p ower requireMents The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 3) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VCC Supply Voltage l 2.7 5.5 V ICC Supply Current Conversion Current (Note 12) l 160 275 µA Temperature Measurement (Note 12) l 200 300 µA Sleep Mode (Note 12) l 1 2 µA H-Grade l 2.5 µA 2498fg 4 For more information www.linear.com/LTC2498 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics (Normal Speed) Electrical Characteristics (2x Speed) Converter Characteristics Analog Input and Reference Digital Inputs and Digital Outputs Power Requirements Digital Inputs and Digital Outputs Typical Performance Characteristics Pin Functions Functional Block Diagram Test Circuits Timing Diagrams Applications Information Package Description Revision History Related Parts