LTC2308 INTERNAL REFERENCE CHARACTERISTICSThe l denotes the specifications which apply over thefull operating temperature range, otherwise specifications are at TA = 25°C. (Note 4)PARAMETERCONDITIONSMINTYPMAXUNITS VREF Output Voltage IOUT = 0 l 2.47 2.50 2.53 V VREF Output Tempco IOUT = 0 ±25 ppm/°C VREF Output Impedance –0.1mA ≤ IOUT ≤ 0.1mA 8 kW VREFCOMP Output Voltage IOUT = 0 4.096 V VREF Line Regulation AVDD = 4.75V to 5.25V 0.8 mV/V DIGITAL INPUTS AND DIGITAL OUTPUTSThe l denotes the specifications which apply over thefull operating temperature range, otherwise specifications are at TA = 25°C. (Note 4) SYMBOLPARAMETERCONDITIONSMINTYPMAXUNITS VIH High Level Input Voltage DVDD = 5.25V l 2.4 V VIL Low Level Input Voltage DVDD = 4.75V l 0.8 V IIN High Level Input Current VIN = VDD l ±10 µA CIN Digital Input Capacitance 5 pF VOH High Level Output Voltage OVDD = 4.75V, IOUT = –10µA 4.74 V OVDD = 4.75V, IOUT = –200µA l 4 V VOL Low Level Input Voltage OVDD = 4.75V, IOUT = 160µA 0.05 V OVDD = 4.75V, IOUT = 1.6mA l 0.4 V IOZ Hi-Z Output Leakage VOUT = 0V to OVDD, CONVST High l ±10 µA COZ Hi-Z Output Capacitance CONVST High 15 pF ISOURCE Output Source Current VOUT = 0V –10 mA ISINK Output Sink Current VOUT = OVDD 10 mA POWER REQUIREMENTSThe l denotes the specifications which apply over the full operating temperaturerange, otherwise specifications are at TA = 25°C. (Note 4) SYMBOLPARAMETERCONDITIONSMINTYPMAXUNITS AVDD Analog Supply Voltage 4.75 5 5.25 V DVDD Digital Supply Voltage 4.75 5 5.25 V OVDD Output Driver Supply Voltage 2.7 5.25 V IDD Supply Current CL = 25pF l 3.5 4.2 mA Nap Mode CONVST = 5V, Conversion Done l 180 400 µA Sleep Mode CONVST = 5V, Conversion Done l 7 20 µA PD Power Dissipation 17.5 mW Nap Mode 0.9 mW Sleep Mode 35 µW 2308fc 4 For more information www.linear.com/LTC2308
