Datasheet LTC2385-18 (Analog Devices) - 4

LTC2385-18
REFERENCE BUFFER CHARACTERISTICS 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) l 0.9 1.1 mA VREFBUF = 4.096V, Sleep Mode (REFBUF Overdriven) (Note 9) 0.5 mA VCM Common Mode Output VREFBUF = 4.096V, IOUT = 0μA 2.028 2.048 2.068 V VCM Output Impedance –1mA < IOUT < 1mA l 15 Ω
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) 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
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
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 Supply Current 5Msps Sample Rate l 3 3.8 mA IVDDL Supply Current 5Msps Sample Rate l 17.1 19.6 mA IOVDD Supply Current 5Msps Sample Rate l 8.1 9.6 mA I l POWERDOWN Power-Down Mode Current Power-Down Mode (IVDD) 1 20 μA I l POWERDOWN Power-Down Mode Current Power-Down Mode (IVDDL + IOVDD) 2 250 μA PD Power Dissipation 5Msps Sample Rate l 78 92 mW Power-Down Mode Power-Down Mode (IVDD + IVDDL + IOVDD) l 10 725 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 238518f 4 For more information www.linear.com/LTC2385-18 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Converter Characteristics Dynamic Accuracy Internal Reference Characteristics Reference Buffer Characteristics Digital Inputs and Digital Outputs Power Requirements ADC Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Timing Diagram Applications Information Package Description Typical Application Related Parts