Datasheet LTC2345-18 (Analog Devices) - 4
| 制造商 | Analog Devices |
| 描述 | Octal, 18-Bit, 200ksps Differential SoftSpan ADC with Wide Input Common Mode Range |
| 页数 / 页 | 40 / 4 — Dyna. Mic accuracy The. denotes the specifications which apply over the … |
| 文件格式/大小 | PDF / 1.9 Mb |
| 文件语言 | 英语 |
Dyna. Mic accuracy The. denotes the specifications which apply over the full operating temperature range,
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LTC2345-18
Dyna Mic accuracy The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. AIN = –1dBFS. (Notes 8, 12) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
SINAD Signal-to-(Noise + SoftSpans 7 and 6: ±4.096V and ±4V Ranges, fIN = 2kHz l 87.3 91.8 dB Distortion) Ratio SoftSpans 5 and 4: 0V to 4.096V and 0V to 4V Ranges, fIN = 2kHz l 81.4 85.7 dB SoftSpans 3 and 2: ±2.048V and ±2V Ranges, fIN = 2kHz l 81.5 85.9 dB SoftSpan 1: 0V to 2.048V Range, fIN = 2kHz l 75.7 80.1 dB SNR Signal-to-Noise Ratio SoftSpans 7 and 6: ±4.096V and ±4V Ranges, fIN = 2kHz l 87.6 91.8 dB SoftSpans 5 and 4: 0V to 4.096V and 0V to 4V Ranges, fIN = 2kHz l 81.6 85.7 dB SoftSpans 3 and 2: ±2.048V and ±2V Ranges, fIN = 2kHz l 81.7 85.9 dB SoftSpan 1: 0V to 2.048V Range, fIN = 2kHz l 75.8 80.1 dB THD Total Harmonic Distortion SoftSpans 7 and 6: ±4.096V and ±4V Ranges, fIN = 2kHz l –113 –99 dB SoftSpans 5 and 4: 0V to 4.096V and 0V to 4V Ranges, fIN = 2kHz l –108 –96 dB SoftSpans 3 and 2: ±2.048V and ±2V Ranges, fIN = 2kHz l –107 –97 dB SoftSpan 1: 0V to 2.048V Range, fIN = 2kHz l –108 –96 dB SFDR Spurious Free Dynamic SoftSpans 7 and 6: ±4.096V and ±4V Ranges, fIN = 2kHz l 99 114 dB Range SoftSpans 5 and 4: 0V to 4.096V and 0V to 4V Ranges, fIN = 2kHz l 96 109 dB SoftSpans 3 and 2: ±2.048 and ±2V Ranges, fIN = 2kHz l 97 108 dB SoftSpan 1: 0V to 2.048V Range, fIN = 2kHz l 97 108 dB Channel-to-Channel One Channel Converting 3.6VP-P 200Hz Sine in ±2.048V Range, −107 dB Crosstalk Crosstalk to All Other Channels –3dB Input Bandwidth 31 MHz Aperture Delay 1 ns Aperture Delay Matching 150 ps Aperture Jitter 3 psRMS Transient Response Full-Scale Step, 0.005% Settling 200 ns
inTernal reFerence 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
VREFIN Internal Reference Output Voltage 2.043 2.048 2.053 V Internal Reference Temperature Coefficient (Note 13) l 5 20 ppm/°C Internal Reference Line Regulation VDD = 4.75V to 5.25V 0.1 mV/V Internal Reference Output Impedance 20 kΩ VREFIN REFIN Voltage Range REFIN Overdriven (Note 6) 1.25 2.2 V 234518f 4 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
Dyna Mic accuracy The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. AIN = –1dBFS. (Notes 8, 12) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
SINAD Signal-to-(Noise + SoftSpans 7 and 6: ±4.096V and ±4V Ranges, fIN = 2kHz l 87.3 91.8 dB Distortion) Ratio SoftSpans 5 and 4: 0V to 4.096V and 0V to 4V Ranges, fIN = 2kHz l 81.4 85.7 dB SoftSpans 3 and 2: ±2.048V and ±2V Ranges, fIN = 2kHz l 81.5 85.9 dB SoftSpan 1: 0V to 2.048V Range, fIN = 2kHz l 75.7 80.1 dB SNR Signal-to-Noise Ratio SoftSpans 7 and 6: ±4.096V and ±4V Ranges, fIN = 2kHz l 87.6 91.8 dB SoftSpans 5 and 4: 0V to 4.096V and 0V to 4V Ranges, fIN = 2kHz l 81.6 85.7 dB SoftSpans 3 and 2: ±2.048V and ±2V Ranges, fIN = 2kHz l 81.7 85.9 dB SoftSpan 1: 0V to 2.048V Range, fIN = 2kHz l 75.8 80.1 dB THD Total Harmonic Distortion SoftSpans 7 and 6: ±4.096V and ±4V Ranges, fIN = 2kHz l –113 –99 dB SoftSpans 5 and 4: 0V to 4.096V and 0V to 4V Ranges, fIN = 2kHz l –108 –96 dB SoftSpans 3 and 2: ±2.048V and ±2V Ranges, fIN = 2kHz l –107 –97 dB SoftSpan 1: 0V to 2.048V Range, fIN = 2kHz l –108 –96 dB SFDR Spurious Free Dynamic SoftSpans 7 and 6: ±4.096V and ±4V Ranges, fIN = 2kHz l 99 114 dB Range SoftSpans 5 and 4: 0V to 4.096V and 0V to 4V Ranges, fIN = 2kHz l 96 109 dB SoftSpans 3 and 2: ±2.048 and ±2V Ranges, fIN = 2kHz l 97 108 dB SoftSpan 1: 0V to 2.048V Range, fIN = 2kHz l 97 108 dB Channel-to-Channel One Channel Converting 3.6VP-P 200Hz Sine in ±2.048V Range, −107 dB Crosstalk Crosstalk to All Other Channels –3dB Input Bandwidth 31 MHz Aperture Delay 1 ns Aperture Delay Matching 150 ps Aperture Jitter 3 psRMS Transient Response Full-Scale Step, 0.005% Settling 200 ns
inTernal reFerence 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
VREFIN Internal Reference Output Voltage 2.043 2.048 2.053 V Internal Reference Temperature Coefficient (Note 13) l 5 20 ppm/°C Internal Reference Line Regulation VDD = 4.75V to 5.25V 0.1 mV/V Internal Reference Output Impedance 20 kΩ VREFIN REFIN Voltage Range REFIN Overdriven (Note 6) 1.25 2.2 V 234518f 4 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