Datasheet LTC2378-20 (Analog Devices) - 4

LTC2378-20
r eFerence inpuT 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
VREF Reference Voltage (Note 5) l 2.5 5.1 V IREF Reference Input Current (Note 9) l 0.94 1.1 mA VIHDGC High Level Input Voltage REF/DGC Pin l 0.8VREF V VILDGC Low Level Input Voltage REF/DGC Pin l 0.2VREF V
Digi Tal 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 4) 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
p ower requireMenTs 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
VDD Supply Voltage l 2.375 2.5 2.625 V OVDD Supply Voltage l 1.71 5.25 V IVDD Supply Current 1Msps Sample Rate l 8.4 10 mA IOVDD Supply Current 1Msps Sample Rate (CL = 20pF) 0.2 mA IPD Power Down Mode Conversion Done (IVDD + IOVDD + IREF) l 1 90 µA PD Power Dissipation 1Msps Sample Rate 21 25 mW Power Down Mode Conversion Done (IVDD + IOVDD + IREF) 2.5 225 µW
a Dc TiMing characTerisTics 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
fSMPL Maximum Sampling Frequency l 1 Msps tCONV Conversion Time l 615 675 ns tACQ Acquisition Time tACQ = tCYC – tCONV – tBUSYLH (Note 10) l 312 ns tCYC Time Between Conversions l 1 µs tCNVH CNV High Time l 20 ns tBUSYLH CNV↑ to BUSY Delay CL = 20pF l 13 ns tCNVL Minimum Low Time for CNV (Note 11) l 20 ns tQUIET SCK Quiet Time from CNV↑ (Note 10) l 20 ns tSCK SCK Period (Notes 11, 12) l 10 ns 237820fb 4 For more information www.linear.com/LTC2378-20 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Converter Characteristics Dynamic Accuracy Reference Input Digital Inputs and Digital Outputs Power Requirements ADC Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Timing Diagram Applications Information Board Layout Package Description Revision History Typical Application Related Parts