Datasheet LTC2379-18 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | 18-Bit, 1.6Msps, Low Power SAR ADC with 101.2dB SNR |
| Pages / Page | 26 / 4 — REFERENCE INPUT. The. denotes the specifications which apply over the … |
| File Format / Size | PDF / 570 Kb |
| Document Language | English |
REFERENCE INPUT. The. denotes the specifications which apply over the full operating temperature range, otherwise
Model Line for this Datasheet
- LTC2379CDE-18#PBF LTC2379CDE-18#PBF LTC2379CDE-18#TRPBF LTC2379CDE-18#TRPBF LTC2379CMS-18#PBF LTC2379CMS-18#PBF LTC2379CMS-18#TRPBF LTC2379CMS-18#TRPBF LTC2379HMS-18#PBF LTC2379HMS-18#PBF LTC2379HMS-18#TRPBF LTC2379HMS-18#TRPBF LTC2379IDE-18#PBF LTC2379IDE-18#PBF LTC2379IDE-18#TRPBF LTC2379IDE-18#TRPBF LTC2379IMS-18#PBF LTC2379IMS-18#PBF LTC2379IMS-18#TRPBF LTC2379IMS-18#TRPBF
Text Version of Document
LTC2379-18
REFERENCE 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 1 1.3 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
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 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
POWER 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 1.6Msps Sample Rate l 7.2 8.6 mA IOVDD Supply Current 1.6Msps Sample Rate (CL = 20pF) 0.7 mA IPD Power Down Mode Conversion Done (IVDD + IOVDD + IREF) l 0.9 90 µA IPD Power Down Mode Conversion Done (IVDD + IOVDD + IREF, H-Grade) l 0.9 140 µA PD Power Dissipation 1.6Msps Sample Rate 18 21.5 mW Power Down Mode Conversion Done (IVDD + IOVDD + IREF) 2.25 225 µW Power Down Mode Conversion Done (IVDD + IOVDD + IREF, H-Grade) 2.25 315 µW
ADC 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 1.6 Msps tCONV Conversion Time l 360 412 ns tACQ Acquisition Time tACQ = tCYC – tCONV – tBUSYLH (Note 10) l 200 ns tCYC Time Between Conversions l 625 ns 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 tSCKH SCK High Time l 4 ns 237918fb 4 For more information www.linear.com/LTC2379-18 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information 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
REFERENCE 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 1 1.3 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
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 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
POWER 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 1.6Msps Sample Rate l 7.2 8.6 mA IOVDD Supply Current 1.6Msps Sample Rate (CL = 20pF) 0.7 mA IPD Power Down Mode Conversion Done (IVDD + IOVDD + IREF) l 0.9 90 µA IPD Power Down Mode Conversion Done (IVDD + IOVDD + IREF, H-Grade) l 0.9 140 µA PD Power Dissipation 1.6Msps Sample Rate 18 21.5 mW Power Down Mode Conversion Done (IVDD + IOVDD + IREF) 2.25 225 µW Power Down Mode Conversion Done (IVDD + IOVDD + IREF, H-Grade) 2.25 315 µW
ADC 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 1.6 Msps tCONV Conversion Time l 360 412 ns tACQ Acquisition Time tACQ = tCYC – tCONV – tBUSYLH (Note 10) l 200 ns tCYC Time Between Conversions l 625 ns 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 tSCKH SCK High Time l 4 ns 237918fb 4 For more information www.linear.com/LTC2379-18 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information 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
