Datasheet LTC2444, LTC2445, LTC2448, LTC2449 (Analog Devices) - 4

LTC2444/LTC2445/ LTC2448/LTC2449
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 l GND – 0.3V VCC + 0.3V V IN– Absolute/Common Mode IN– Voltage l GND – 0.3V VCC + 0.3V V VIN Input Differential Voltage Range l –VREF/2 VREF/2 V (IN+ – IN–) REF+ Absolute/Common Mode REF+ Voltage l 0.1 VCC V REF– Absolute/Common Mode REF– Voltage l GND VCC – 0.1V V VREF Reference Differential Voltage Range l 0.1 VCC V (REF+ – REF–) CS(IN+) IN+ Sampling Capacitance 2 pF CS(IN–) IN– Sampling Capacitance 2 pF CS(REF+) REF+ Sampling Capacitance 2 pF CS(REF–) REF– Sampling Capacitance 2 pF IDC_LEAK(IN+, IN–, Leakage Current, Inputs and Reference CS = VCC, IN+ = GND, IN– = GND, l –15 1 15 nA REF+, REF–) REF+ = 5V, REF– = GND ISAMPLE(IN+, IN–, Average Input/Reference Current Varies, See Applications Section nA REF+, REF–) During Sampling 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 4.5V ≤ VCC ≤ 5.5V l 2.5 V VIL Low Level Input Voltage, CS, FO, SDI 4.5V ≤ VCC ≤ 5.5V l 0.8 V VIH High Level Input Voltage SCK 4.5V ≤ VCC ≤ 5.5V (Note 8) l 2.5 V VIL Low Level Input Voltage SCK 4.5V ≤ VCC ≤ 5.5V (Note 8) l 0.8 V IIN Digital Input Current, CS, FO, EXT, SDI 0V ≤ VIN ≤ VCC l –10 10 µA IIN Digital Input Current, SCK 0V ≤ VIN ≤ VCC (Note 8) l –10 10 µA CIN Digital Input Capacitance, CS, FO, SDI 10 pF CIN Digital Input Capacitance, SCK (Note 8) 10 pF VOH High Level Output Voltage, SDO, BUSY IO = –800µA l VCC – 0.5V V VOL Low Level Output Voltage, SDO, BUSY IO = 1.6mA l 0.4V V VOH High Level Output Voltage, SCK IO = –800µA (Note 9) l VCC – 0.5V V VOL Low Level Output Voltage, SCK IO = 1.6mA (Note 9) l 0.4V 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 4.5 5.5 V ICC Supply Current Conversion Mode CS = 0V (Note 7) l 8 11 mA Sleep Mode CS = VCC (Note 7) l 8 30 µA 2444589fc 4 For more information www.linear.com/LTC2444 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Analog Input and Reference Digital Inputs and Digital Outputs Power Requirements Timing Characteristics Pin Functions Functional Block Diagram Test Circuit Applications Information Package Description Revision History Typical Application Related Parts