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LT1468 Datasheet(PDF) 4 Page - Linear Technology |
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LT1468 Datasheet(HTML) 4 Page - Linear Technology |
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4 / 26 page  LTC2328-16 4 232816fb For more information www.linear.com/LTC2328-16 inTernal reFerence characTerisTics reFerence buFFer characTerisTics DigiTal inpuTs anD DigiTal ouTpuTs power requireMenTs The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 4) The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 4) The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 4) The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 4) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VREFIN Internal Reference Output Voltage 2.043 2.048 2.053 V VREFIN Temperature Coefficient (Note 14) l 2 20 ppm/°C REFIN Output Impedance 15 kΩ VREFIN Line Regulation VDD = 4.75V to 5.25V 0.08 mV/V REFIN Input Voltage Range (REFIN Overdriven) (Note 5) 1.25 2.4 V SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VREFBUF Reference Buffer Output Voltage VREFIN = 2.048V l 4.091 4.096 4.101 V REFBUF Input Voltage Range (REFBUF Overdriven) (Notes 5, 9) l 2.5 5 V REFBUF Output Impedance VREFIN = 0V 13 kΩ IREFBUF REFBUF Load Current VREFBUF = 5V (REFBUF Overdriven) (Notes 9, 10) VREFBUF = 5V, Nap Mode (REFBUF Overdriven) (Note 9) l 0.89 0.39 1.2 mA mA SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VIH High Level Input Voltage l 0.8 • OVDD V VIL Low Level Input Voltage l 0.2 • OVDD V IIN Digital Input Current VIN = 0V to OVDD l –10 10 μA CIN Digital Input Capacitance 5 pF VOH High Level Output Voltage IO = –500µA l OVDD – 0.2 V VOL Low Level Output Voltage IO = 500µA l 0.2 V IOZ Hi-Z Output Leakage Current VOUT = 0V to OVDD l –10 10 µA ISOURCE Output Source Current VOUT = 0V –10 mA ISINK Output Sink Current VOUT = OVDD 10 mA SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VDD Supply Voltage l 4.75 5 5.25 V OVDD Supply Voltage l 1.71 5.25 V IVDD IOVDD INAP ISLEEP Supply Current Supply Current Nap Mode Current Sleep Mode Current 1Msps Sample Rate (IN+ = –10.24V, IN– = 0V) 1Msps Sample Rate (IN+ = IN– = 0V) 1Msps Sample Rate (CL = 20pF) Conversion Done (IVDD + IOVDD, IN+ = –10.24V, IN– = 0V) Sleep Mode (IVDD + IOVDD) l l l 14.5 10 0.4 8.4 60 16 10 225 mA mA mA mA μA PD Power Dissipation Nap Mode Sleep Mode 1Msps Sample Rate (IN+ = –10.24V, IN– = 0V) 1Msps Sample Rate (IN+ = IN– = 0V) Conversion Done (IVDD + IOVDD, IN+ = –10.24V, IN– = 0V) Sleep Mode (IVDD + IOVDD) l l l 72.5 50 42 0.3 80 50 1.1 mW mW mW mW |
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