Datasheet LTC2344-18 (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | Quad, 18-Bit, 400ksps/ch Differential SoftSpan ADC with Wide Input Common Mode Range |
| Pages / Page | 40 / 3 — ELECTRICAL. CHARACTERISTICS The. denotes the specifications which apply … |
| File Format / Size | PDF / 2.3 Mb |
| Document Language | English |
ELECTRICAL. CHARACTERISTICS The. denotes the specifications which apply over the full operating
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LTC2344-18
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 5) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN+ Absolute Input Range (Note 6) l 0 VDD V (IN0+ to IN3+) VIN– Absolute Input Range (Note 6) l 0 VDD V (IN0– to IN3–) VIN+ – VIN– Input Differential Voltage SoftSpan 7: ±VREFBUF Range (Note 6) l – VREFBUF VREFBUF V Range SoftSpan 6: ±VREFBUF/1.024 Range (Note 6) l – VREFBUF/1.024 VREFBUF/1.024 V SoftSpan 5: 0V to VREFBUF Range (Note 6) l 0 VREFBUF V SoftSpan 4: 0V to VREFBUF/1.024 Range (Note 6) l 0 VREFBUF/1.024 V SoftSpan 3: ±0.5 • VREFBUF Range (Note 6) l –0.5 • VREFBUF 0.5 • VREFBUF V SoftSpan 2: ±0.5 • VREFBUF/1.024 Range (Note 6) l –0.5 • VREFBUF/1.024 0.5 • VREFBUF/1.024 V SoftSpan 1: 0V to 0.5 • VREFBUF Range (Note 6) l 0 0.5 • VREFBUF V VCM Input Common Mode Voltage (Note 6) l 0 VDD V Range VIN+ – VIN– Input Differential Overdrive (Note 7) l −VDD VDD V Tolerance IIN Analog Input Leakage Current l –1 1 µA CIN Analog Input Capacitance Sample Mode 90 pF Hold Mode 10 pF CMRR Input Common Mode VIN+ = VIN− = 3.6VP-P 200Hz Sine l 88 102 dB Rejection Ratio VIHCNV CNV High Level Input Voltage l 1.3 V VILCNV CNV Low Level Input Voltage l 0.5 V IINCNV CNV Input Current VIN = 0V to VDD l –10 10 μA
CONVERTER 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
Resolution l 18 Bits No Missing Codes l 18 Bits Transition Noise SoftSpans 7 and 6: ±4.096V and ±4V Ranges 1.6 LSBRMS SoftSpans 5 and 4: 0V to 4.096V and 0V to 4V Ranges 3.2 LSBRMS SoftSpans 3 and 2: ±2.048V and ±2V Ranges 3.2 LSBRMS SoftSpan 1: 0V to 2.048V Range 6.3 LSBRMS INL Integral Linearity Error (Note 9) l –4 ±1.5 4 LSB DNL Differential Linearity Error (Note 10) l −0.9 ±0.5 0.9 LSB ZSE Zero-Scale Error (Note 11) l −570 ±50 570 μV Zero-Scale Error Drift ±2 μV/°C FSE Full-Scale Error VREFBUF = 4.096V (REFBUF Overdriven) (Note 11) l −0.13 ±0.025 0.13 %FS Full-Scale Error Drift ±2.5 ppm/°C 234418f For more information www.linear.com/LTC2344-18 3 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 Typical Performance Characteristics Pin Functions Configuration Tables Functional Block Diagram Timing Diagram Applications Information Board Layout Package Description Typical Application Related Parts
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 5) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN+ Absolute Input Range (Note 6) l 0 VDD V (IN0+ to IN3+) VIN– Absolute Input Range (Note 6) l 0 VDD V (IN0– to IN3–) VIN+ – VIN– Input Differential Voltage SoftSpan 7: ±VREFBUF Range (Note 6) l – VREFBUF VREFBUF V Range SoftSpan 6: ±VREFBUF/1.024 Range (Note 6) l – VREFBUF/1.024 VREFBUF/1.024 V SoftSpan 5: 0V to VREFBUF Range (Note 6) l 0 VREFBUF V SoftSpan 4: 0V to VREFBUF/1.024 Range (Note 6) l 0 VREFBUF/1.024 V SoftSpan 3: ±0.5 • VREFBUF Range (Note 6) l –0.5 • VREFBUF 0.5 • VREFBUF V SoftSpan 2: ±0.5 • VREFBUF/1.024 Range (Note 6) l –0.5 • VREFBUF/1.024 0.5 • VREFBUF/1.024 V SoftSpan 1: 0V to 0.5 • VREFBUF Range (Note 6) l 0 0.5 • VREFBUF V VCM Input Common Mode Voltage (Note 6) l 0 VDD V Range VIN+ – VIN– Input Differential Overdrive (Note 7) l −VDD VDD V Tolerance IIN Analog Input Leakage Current l –1 1 µA CIN Analog Input Capacitance Sample Mode 90 pF Hold Mode 10 pF CMRR Input Common Mode VIN+ = VIN− = 3.6VP-P 200Hz Sine l 88 102 dB Rejection Ratio VIHCNV CNV High Level Input Voltage l 1.3 V VILCNV CNV Low Level Input Voltage l 0.5 V IINCNV CNV Input Current VIN = 0V to VDD l –10 10 μA
CONVERTER 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
Resolution l 18 Bits No Missing Codes l 18 Bits Transition Noise SoftSpans 7 and 6: ±4.096V and ±4V Ranges 1.6 LSBRMS SoftSpans 5 and 4: 0V to 4.096V and 0V to 4V Ranges 3.2 LSBRMS SoftSpans 3 and 2: ±2.048V and ±2V Ranges 3.2 LSBRMS SoftSpan 1: 0V to 2.048V Range 6.3 LSBRMS INL Integral Linearity Error (Note 9) l –4 ±1.5 4 LSB DNL Differential Linearity Error (Note 10) l −0.9 ±0.5 0.9 LSB ZSE Zero-Scale Error (Note 11) l −570 ±50 570 μV Zero-Scale Error Drift ±2 μV/°C FSE Full-Scale Error VREFBUF = 4.096V (REFBUF Overdriven) (Note 11) l −0.13 ±0.025 0.13 %FS Full-Scale Error Drift ±2.5 ppm/°C 234418f For more information www.linear.com/LTC2344-18 3 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 Typical Performance Characteristics Pin Functions Configuration Tables Functional Block Diagram Timing Diagram Applications Information Board Layout Package Description Typical Application Related Parts
