Datasheet LTC2440 (Analog Devices) - 3
| 制造商 | Analog Devices |
| 描述 | 24-Bit High Speed Differential ∆∑ ADC with Selectable Speed/Resolution |
| 页数 / 页 | 30 / 3 — ANALOG INPUT AND REFERENCE. The. denotes the specifications which apply … |
| 文件格式/大小 | PDF / 436 Kb |
| 文件语言 | 英语 |
ANALOG INPUT AND REFERENCE. The. denotes the specifications which apply over the full operating
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LTC2440
ANALOG INPUT AND REFERENCE The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 3) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
IN+ Absolute/Common Mode IN+ Voltage l GND – 0.3V VCC + 0.3V V IN– Absolute/Common Mode IN– Voltage l GND – 0.3V VCC + 0.3V V VIN Input Differential Voltage Range (IN+ – IN–) l –VREF/2 VREF/2 V REF+ Absolute/Common Mode REF+ Voltage l 0.1 VCC V REF– Absolute/Common Mode REF– Voltage l GND VCC – 0.1V V VREF Reference Differential Voltage Range (REF+ l 0.1 VCC V – REF–) CS(IN+) IN+ Sampling Capacitance 3.5 pF CS(IN–) IN– Sampling Capacitance 3.5 pF CS(REF+) REF+ Sampling Capacitance 3.5 pF CS(REF–) REF– Sampling Capacitance 3.5 pF IDC_LEAK(IN+, IN–, Leakage Current, Inputs and Reference CS = VCC, IN+ = GND, IN– = GND, l –100 10 100 nA REF+, REF–) REF+ = 5V, REF– = GND ISAMPLE(IN+, IN–, Average Input/Reference Current During Varies, See Applications Section REF+, REF–) Sampling
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 3) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN High Level Input Voltage 4.5V ≤ VCC ≤ 5.5V l 2.5 V CS, fO, SDI VIL Low Level Input Voltage 4.5V ≤ VCC ≤ 5.5V l 0.8 V CS, fO, SDI VIN High Level Input Voltage 4.5V ≤ VCC ≤ 5.5V (Note 8) l 2.5 V SCK VIL Low Level Input Voltage 4.5V ≤ VCC ≤ 5.5V (Note 8) l 0.8 V SCK IIN Digital Input Current 0V ≤ VIN ≤ VCC l –10 10 µA CS, fO IIN Digital Input Current 0V ≤ VIN ≤ VCC (Note 8) l –10 10 µA SCK CIN Digital Input Capacitance 10 pF CS, fO CIN Digital Input Capacitance (Note 8) 10 pF SCK VOH High Level Output Voltage IO = –800µA l VCC – 0.5V V SDO, BUSY VOL Low Level Output Voltage IO = 1.6mA l 0.4 V SDO, BUSY VOH High Level Output Voltage IO = –800µA (Note 9) l VCC – 0.5V V SCK VOL Low Level Output Voltage IO = 1.6mA (Note 9) l 0.4 V SCK IOZ Hi-Z Output Leakage l –10 10 µA SDO 2440fe For more information www.linear.com/LTC2440 3 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Typical Performance Characteristics Pin Functions Typical Application Related Parts
ANALOG INPUT AND REFERENCE The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 3) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
IN+ Absolute/Common Mode IN+ Voltage l GND – 0.3V VCC + 0.3V V IN– Absolute/Common Mode IN– Voltage l GND – 0.3V VCC + 0.3V V VIN Input Differential Voltage Range (IN+ – IN–) l –VREF/2 VREF/2 V REF+ Absolute/Common Mode REF+ Voltage l 0.1 VCC V REF– Absolute/Common Mode REF– Voltage l GND VCC – 0.1V V VREF Reference Differential Voltage Range (REF+ l 0.1 VCC V – REF–) CS(IN+) IN+ Sampling Capacitance 3.5 pF CS(IN–) IN– Sampling Capacitance 3.5 pF CS(REF+) REF+ Sampling Capacitance 3.5 pF CS(REF–) REF– Sampling Capacitance 3.5 pF IDC_LEAK(IN+, IN–, Leakage Current, Inputs and Reference CS = VCC, IN+ = GND, IN– = GND, l –100 10 100 nA REF+, REF–) REF+ = 5V, REF– = GND ISAMPLE(IN+, IN–, Average Input/Reference Current During Varies, See Applications Section REF+, REF–) Sampling
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 3) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN High Level Input Voltage 4.5V ≤ VCC ≤ 5.5V l 2.5 V CS, fO, SDI VIL Low Level Input Voltage 4.5V ≤ VCC ≤ 5.5V l 0.8 V CS, fO, SDI VIN High Level Input Voltage 4.5V ≤ VCC ≤ 5.5V (Note 8) l 2.5 V SCK VIL Low Level Input Voltage 4.5V ≤ VCC ≤ 5.5V (Note 8) l 0.8 V SCK IIN Digital Input Current 0V ≤ VIN ≤ VCC l –10 10 µA CS, fO IIN Digital Input Current 0V ≤ VIN ≤ VCC (Note 8) l –10 10 µA SCK CIN Digital Input Capacitance 10 pF CS, fO CIN Digital Input Capacitance (Note 8) 10 pF SCK VOH High Level Output Voltage IO = –800µA l VCC – 0.5V V SDO, BUSY VOL Low Level Output Voltage IO = 1.6mA l 0.4 V SDO, BUSY VOH High Level Output Voltage IO = –800µA (Note 9) l VCC – 0.5V V SCK VOL Low Level Output Voltage IO = 1.6mA (Note 9) l 0.4 V SCK IOZ Hi-Z Output Leakage l –10 10 µA SDO 2440fe For more information www.linear.com/LTC2440 3 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Typical Performance Characteristics Pin Functions Typical Application Related Parts