Datasheet LTC2341-18 (Analog Devices) - 5
| 制造商 | Analog Devices |
| 描述 | Dual, 18-Bit, 666ksps/ch Differential SoftSpan ADC with Wide Input Common Mode Range |
| 页数 / 页 | 38 / 5 — reFerence buFFer. characTerisTics. The. denotes the specifications which … |
| 文件格式/大小 | PDF / 2.0 Mb |
| 文件语言 | 英语 |
reFerence buFFer. characTerisTics. The. denotes the specifications which apply over the full
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LTC2341-18
reFerence buFFer characTerisTics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 8) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VREFBUF Reference Buffer Output Voltage REFIN Overdriven, VREFIN = 2.048V l 4.091 4.096 4.101 V REFBUF Voltage Range REFBUF Overdriven (Notes 6, 14) l 2.5 5 V REFBUF Input Impedance VREFIN = 0V, Buffer Disabled 13 kΩ IREFBUF REFBUF Load Current VREFBUF = 5V, 2 Channels Enabled (Notes 14, 15) l 1.3 1.6 mA VREFBUF = 5V, Acquisition Mode (Note 14) 0.35 mA
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 8) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS CMOS Digital Inputs and Outputs
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 IOUT = –500μA l OVDD – 0.2 V VOL Low Level Output Voltage IOUT = 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 –50 mA ISINK Output Sink Current VOUT = OVDD 50 mA
LVDS Digital Inputs and Outputs
VID Differential Input Voltage l 200 350 600 mV RID On-Chip Input Termination CS = 0V, VICM = 1.2V l 80 106 130 Ω Resistance CS = OVDD 10 MΩ VICM Common-Mode Input Voltage l 0.3 1.2 2.2 V IICM Common-Mode Input Current VIN+ = VIN– = 0V to OVDD l –10 10 μA VOD Differential Output Voltage RL = 100Ω Differential Termination l 275 350 425 mV VOCM Common-Mode Output Voltage RL = 100Ω Differential Termination l 1.1 1.2 1.3 V IOZ Hi-Z Output Leakage Current VOUT = 0V to OVDD l –10 10 μA 234118f For more information www.linear.com/LTC2341-18 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Converter Characteristics Dynamic Accuracy Internal Reference Characteristics Reference Buffer Characteristics Digital Inputs and Digital Outputs Power Requirements ADC Timing Characteristics ADC Timing Characteristics 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
reFerence buFFer 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
VREFBUF Reference Buffer Output Voltage REFIN Overdriven, VREFIN = 2.048V l 4.091 4.096 4.101 V REFBUF Voltage Range REFBUF Overdriven (Notes 6, 14) l 2.5 5 V REFBUF Input Impedance VREFIN = 0V, Buffer Disabled 13 kΩ IREFBUF REFBUF Load Current VREFBUF = 5V, 2 Channels Enabled (Notes 14, 15) l 1.3 1.6 mA VREFBUF = 5V, Acquisition Mode (Note 14) 0.35 mA
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 8) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS CMOS Digital Inputs and Outputs
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 IOUT = –500μA l OVDD – 0.2 V VOL Low Level Output Voltage IOUT = 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 –50 mA ISINK Output Sink Current VOUT = OVDD 50 mA
LVDS Digital Inputs and Outputs
VID Differential Input Voltage l 200 350 600 mV RID On-Chip Input Termination CS = 0V, VICM = 1.2V l 80 106 130 Ω Resistance CS = OVDD 10 MΩ VICM Common-Mode Input Voltage l 0.3 1.2 2.2 V IICM Common-Mode Input Current VIN+ = VIN– = 0V to OVDD l –10 10 μA VOD Differential Output Voltage RL = 100Ω Differential Termination l 275 350 425 mV VOCM Common-Mode Output Voltage RL = 100Ω Differential Termination l 1.1 1.2 1.3 V IOZ Hi-Z Output Leakage Current VOUT = 0V to OVDD l –10 10 μA 234118f For more information www.linear.com/LTC2341-18 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Converter Characteristics Dynamic Accuracy Internal Reference Characteristics Reference Buffer Characteristics Digital Inputs and Digital Outputs Power Requirements ADC Timing Characteristics ADC Timing Characteristics 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