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LTC2271 Datasheet(PDF) 4 Page - Linear Technology |
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LTC2271 Datasheet(HTML) 4 Page - Linear Technology |
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4 / 24 page  LTC2387-18 4 238718fa For more information www.linear.com/LTC2387-18 reFerence buFFer characTerisTics 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 5) The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 5) power requireMenTs The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 5) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VREFBUF Reference Buffer Output Voltage VREFIN = 2.048V l 4.090 4.096 4.102 V REFBUF Input Voltage Range (REFBUF Overdriven) (Notes 6, 9) l 4.016 4.096 4.176 V IREFBUF REFBUF Load Current VREFBUF = 4.096V (REFBUF Overdriven) (Notes 9, 12) VREFBUF = 4.096V, Sleep Mode (REFBUF Overdriven) (Note 9) l 1.6 0.5 1.8 mA mA VCM Common Mode Output VREFBUF = 4.096V, IOUT = 0μA l 2.028 2.048 2.068 V VCM Output Impedance –1mA < IOUT < 1mA 15 Ω SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS PD, TESTPAT, TWOLANES VIH High Level Input Voltage VDDL = OVDD = 2.5V l 1.7 V VIL Low Level Input Voltage VDDL = OVDD = 2.5V l 0.6 V IIN Digital Input Current VIN = 0V to 2.5V l –10 10 μA CIN Digital Input Capacitance 3 pF CNV+, Single-Ended Convert Start Mode (CNV– Tied to GND) VIH High Level Input Voltage VDDL = 2.5V l 1.7 V VIL Low Level Input Voltage VDDL = 2.5V l 0.6 V CIN Digital Input Capacitance 2 pF CNV+/CNV–, Differential Convert Start Mode VID Differential Input Voltage (Note 13) l 175 350 650 mV VICM Common Mode Input Voltage l 0.8 1.25 1.7 V CLK+/CLK– (LVDS Clock Input) VID Differential Input Voltage (Note 13) l 175 350 650 mV VICM Common Mode Input Voltage l 0.8 1.25 1.7 V DCO+/DCO–, DA+/DA–, DB+/DB– (LVDS Outputs) VOD Differential Output Voltage 100Ω Differential Load l 247 350 454 mV VOS Common Mode Output Voltage 100Ω Differential Load l 1.125 1.25 1.375 V SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VDD Supply Voltage (Note 6) l 4.75 5 5.25 V VDDL Supply Voltage (Note 6) l 2.375 2.5 2.625 V OVDD Supply Voltage (Note 6) l 2.375 2.5 2.625 V IVDD IVDDL IOVDD IPOWERDOWN IPOWERDOWN Supply Current Supply Current Supply Current Power-Down Mode Current Power-Down Mode Current 15Msps Sample Rate 15Msps Sample Rate 15Msps Sample Rate Power-Down Mode (IVDD) Power-Down Mode (IVDDL + IOVDD) l l l l l 5 31.4 8.8 1 2 6 35 10.3 20 250 mA mA mA μA μA PD Power Dissipation Power-Down Mode 15Msps Sample Rate Power-Down Mode (IVDD + IVDDL + IOVDD) l l 125 10 144 725 mW μW IDIFFCNV Increase in IVDDL with Differential CNV Mode Enabled (No Increase During Power-Down) 2.1 mA ITWOLANE Increase in IOVDD with Two-Lane Mode Enabled (No Increase During Power-Down) 3.6 mA |
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