Datasheet LTC2345-18 (Analog Devices) - 6
| 制造商 | Analog Devices |
| 描述 | Octal, 18-Bit, 200ksps Differential SoftSpan ADC with Wide Input Common Mode Range |
| 页数 / 页 | 40 / 6 — p ower requireMenTs The. denotes the specifications which apply over the … |
| 文件格式/大小 | PDF / 1.9 Mb |
| 文件语言 | 英语 |
p ower requireMenTs The. denotes the specifications which apply over the full operating temperature
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LTC2345-18
p ower requireMenTs The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 8) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS CMOS I/O Mode
VDD Supply Voltage l 4.75 5.00 5.25 V OVDD Supply Voltage l 1.71 5.25 V IVDD Supply Current 200ksps Sample Rate, 8 Channels Enabled l 15.3 17.6 mA 200ksps Sample Rate, 8 Channels Enabled, VREFBUF = 5V (Note 14) l 13.7 15.8 mA Acquisition Mode l 1.3 2.1 mA Power Down Mode (C-Grade and I-Grade) l 65 225 μA Power Down Mode (H-Grade) l 65 500 µA IOVDD Supply Current 200ksps Sample Rate, 8 Channels Enabled (CL = 25pF) l 1.8 2.6 mA Acquisition Mode l 1 20 μA Power Down Mode l 1 20 μA PD Power Dissipation 200ksps Sample Rate, 8 Channels Enabled l 81 95 mW Acquisition Mode l 6.5 11 mW Power Down Mode (C-Grade and I-Grade) l 0.33 1.2 mW Power Down Mode (H-Grade) l 0.33 2.6 mW
LVDS I/O Mode
VDD Supply Voltage l 4.75 5.00 5.25 V OVDD Supply Voltage l 2.375 5.25 V IVDD Supply Current 200ksps Sample Rate, 8 Channels Enabled l 17.9 20.6 mA 200ksps Sample Rate, 8 Channels Enabled, VREFBUF = 5V (Note 14) l 16.2 18.6 mA Acquisition Mode l 2.8 3.8 mA Power Down Mode (C-Grade and I-Grade) l 65 225 μA Power Down Mode (H-Grade) l 65 500 µA IOVDD Supply Current 200ksps Sample Rate, 8 Channels Enabled (RL = 100Ω) l 7 8.5 mA Acquisition or (RL = 100Ω) l 7 8.0 mA Power Down Mode l 1 20 μA PD Power Dissipation 200ksps Sample Rate, 8 Channels Enabled l 107 125 mW Acquisition Mode l 32 39 mW Power Down Mode (C-Grade and I-Grade) l 0.33 1.2 mW Power Down Mode (H-Grade) l 0.33 2.6 mW
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 8) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
fSMPL Maximum Sampling Frequency 8 Channels Enabled l 200 ksps 7 Channels Enabled l 225 ksps 6 Channels Enabled l 266 ksps 5 Channels Enabled l 300 ksps 4 Channels Enabled l 375 ksps 3 Channels Enabled l 450 ksps 2 Channels Enabled l 625 ksps 1 Channels Enabled l 1000 ksps tCYC Time Between Conversions 8 Channels Enabled, fSMPL = 200ksps l 5000 ns 7 Channels Enabled, fSMPL = 225ksps l 4444 ns 6 Channels Enabled, fSMPL = 266ksps l 3750 ns 5 Channels Enabled, fSMPL = 300ksps l 3333 ns 4 Channels Enabled, fSMPL = 375ksps l 2666 ns 3 Channels Enabled, fSMPL = 450ksps l 2222 ns 2 Channels Enabled, fSMPL = 625ksps l 1600 ns 1 Channels Enabled, fSMPL = 1000ksps l 1000 ns 234518f 6 For more information www.linear.com/LTC2345-18 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics 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 Configuration Tables Functional Block Diagram Timing Diagram Applications Information Board Layout Package Description Typical Application Related Parts
p ower requireMenTs The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 8) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS CMOS I/O Mode
VDD Supply Voltage l 4.75 5.00 5.25 V OVDD Supply Voltage l 1.71 5.25 V IVDD Supply Current 200ksps Sample Rate, 8 Channels Enabled l 15.3 17.6 mA 200ksps Sample Rate, 8 Channels Enabled, VREFBUF = 5V (Note 14) l 13.7 15.8 mA Acquisition Mode l 1.3 2.1 mA Power Down Mode (C-Grade and I-Grade) l 65 225 μA Power Down Mode (H-Grade) l 65 500 µA IOVDD Supply Current 200ksps Sample Rate, 8 Channels Enabled (CL = 25pF) l 1.8 2.6 mA Acquisition Mode l 1 20 μA Power Down Mode l 1 20 μA PD Power Dissipation 200ksps Sample Rate, 8 Channels Enabled l 81 95 mW Acquisition Mode l 6.5 11 mW Power Down Mode (C-Grade and I-Grade) l 0.33 1.2 mW Power Down Mode (H-Grade) l 0.33 2.6 mW
LVDS I/O Mode
VDD Supply Voltage l 4.75 5.00 5.25 V OVDD Supply Voltage l 2.375 5.25 V IVDD Supply Current 200ksps Sample Rate, 8 Channels Enabled l 17.9 20.6 mA 200ksps Sample Rate, 8 Channels Enabled, VREFBUF = 5V (Note 14) l 16.2 18.6 mA Acquisition Mode l 2.8 3.8 mA Power Down Mode (C-Grade and I-Grade) l 65 225 μA Power Down Mode (H-Grade) l 65 500 µA IOVDD Supply Current 200ksps Sample Rate, 8 Channels Enabled (RL = 100Ω) l 7 8.5 mA Acquisition or (RL = 100Ω) l 7 8.0 mA Power Down Mode l 1 20 μA PD Power Dissipation 200ksps Sample Rate, 8 Channels Enabled l 107 125 mW Acquisition Mode l 32 39 mW Power Down Mode (C-Grade and I-Grade) l 0.33 1.2 mW Power Down Mode (H-Grade) l 0.33 2.6 mW
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 8) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
fSMPL Maximum Sampling Frequency 8 Channels Enabled l 200 ksps 7 Channels Enabled l 225 ksps 6 Channels Enabled l 266 ksps 5 Channels Enabled l 300 ksps 4 Channels Enabled l 375 ksps 3 Channels Enabled l 450 ksps 2 Channels Enabled l 625 ksps 1 Channels Enabled l 1000 ksps tCYC Time Between Conversions 8 Channels Enabled, fSMPL = 200ksps l 5000 ns 7 Channels Enabled, fSMPL = 225ksps l 4444 ns 6 Channels Enabled, fSMPL = 266ksps l 3750 ns 5 Channels Enabled, fSMPL = 300ksps l 3333 ns 4 Channels Enabled, fSMPL = 375ksps l 2666 ns 3 Channels Enabled, fSMPL = 450ksps l 2222 ns 2 Channels Enabled, fSMPL = 625ksps l 1600 ns 1 Channels Enabled, fSMPL = 1000ksps l 1000 ns 234518f 6 For more information www.linear.com/LTC2345-18 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics 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 Configuration Tables Functional Block Diagram Timing Diagram Applications Information Board Layout Package Description Typical Application Related Parts