Datasheet LTC2492 (Analog Devices) - 4

LTC2492
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
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
Digi Tal 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
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
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
fEOSC External Oscillator Frequency Range (Note 16) l 10 1000 kHz tHEO External Oscillator High Period l 0.125 100 µs tLEO External Oscillator Low Period l 0.125 100 µs 2492fe 4 For more information www.linear.com/LTC2492 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics (Normal Speed) Pin Configuration 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 Typical Application Related Parts