Datasheet LTC2494 (Analog Devices) - 4

LTC2494
analog 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
IN+ Absolute/Common Mode IN+ Voltage GND – 0.3V VCC + 0.3V V (IN+ Corresponds to the Selected Positive Input Channel) IN– Absolute/Common Mode IN– Voltage GND – 0.3V VCC + 0.3V V (IN– Corresponds to the Selected Negative Input Channel or COM) 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/Gain V LSB Least Significant Bit of the Output Code l FS/216 REF+ Absolute/Common Mode REF+ Voltage l 0.1 VCC V REF– Absolute/Common Mode REF– Voltage l GND REF+ – 0.1V V 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, 15) 10 pF VOH High Level Output Voltage (SDO) IO = –800µA l VCC – 0.5 V VOL Low Level Output Voltage (SDO) IO = 1.6mA l 0.4 V VOH High Level Output Voltage (SCK) IO = –800µA (Notes 10, 17) l VCC – 0.5 V VOL Low Level Output Voltage (SCK) IO = 1.6mA (Notes 10, 17) l 0.4 V IOZ Hi-Z Output Leakage (SDO) l –10 10 µA
power 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 2494fe 4 For more information www.linear.com/LTC2494