Datasheet LTC2385-18 (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | 18-Bit, 5Msps SAR ADC |
| Pages / Page | 22 / 3 — CONVERTER CHARACTERISTICS. The. denotes the specifications which apply … |
| File Format / Size | PDF / 1.1 Mb |
| Document Language | English |
CONVERTER CHARACTERISTICS. The. denotes the specifications which apply over the full operating
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LTC2385-18
CONVERTER 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
Resolution l 18 Bits No Missing Codes l 18 Bits Transition Noise 1.4 LSBRMS INL Integral Linearity Error REFBUF = 4.096V (Notes 7, 9) l –1.5 ±0.6 1.5 LSB DNL Differential Linearity Error l –0.9 ±0.2 0.9 LSB ZSE Zero-Scale Error (Note 8) l –10 ±1.5 10 LSB Zero-Scale Error Drift 0.02 LSB/°C FSE Full-Scale Error REFBUF = 4.096V (REFBUF Overdriven) (Notes 8, 9) l –20 ±5 20 LSB REFIN = 2.048V (REFIN Overdriven) (Note 8) l –160 ±25 160 LSB Full-Scale Error Drift REFBUF = 4.096V (REFBUF Overdriven) (Note 9) ±0.1 ppm/°C REFIN = 2.048V (REFIN Overdriven) ±1.5 ppm/°C
DYNAMIC ACCURACY The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C and AIN = –1dBFS. (Notes 5, 10) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
SINAD Signal-to-(Noise + Distortion) Ratio fIN = 2kHz l 93.8 96 dB fIN = 1MHz l 92.7 94.6 dB SNR Signal-to-Noise Ratio fIN = 2kHz l 94 96.2 dB fIN = 1MHz l 93.2 95.7 dB THD Total Harmonic Distortion fIN = 2kHz l –117 –108 dB (First Five Harmonics) fIN = 1MHz l –100 –97 dB SFDR Spurious Free Dynamic Range fIN = 2kHz l 108 119 dB fIN = 1MHz l 97 101 dB –3dB Input Bandwidth 200 MHz
INTERNAL REFERENCE 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
VREFIN Internal Reference Output Voltage IOUT = 0μA 2.043 2.048 2.053 V VREFIN Temperature Coefficient (Note 11) l ±5 ±20 ppm/°C REFIN Output Impedance 15 kΩ VREFIN Line Regulation VDD = 4.75V to 5.25V 0.3 mV/V REFIN Input Voltage Range (REFIN Overdriven) (Note 6) l 2.008 2.048 2.088 V 238518f For more information www.linear.com/LTC2385-18 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration 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 Functional Block Diagram Timing Diagram Applications Information Package Description Typical Application Related Parts
CONVERTER 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
Resolution l 18 Bits No Missing Codes l 18 Bits Transition Noise 1.4 LSBRMS INL Integral Linearity Error REFBUF = 4.096V (Notes 7, 9) l –1.5 ±0.6 1.5 LSB DNL Differential Linearity Error l –0.9 ±0.2 0.9 LSB ZSE Zero-Scale Error (Note 8) l –10 ±1.5 10 LSB Zero-Scale Error Drift 0.02 LSB/°C FSE Full-Scale Error REFBUF = 4.096V (REFBUF Overdriven) (Notes 8, 9) l –20 ±5 20 LSB REFIN = 2.048V (REFIN Overdriven) (Note 8) l –160 ±25 160 LSB Full-Scale Error Drift REFBUF = 4.096V (REFBUF Overdriven) (Note 9) ±0.1 ppm/°C REFIN = 2.048V (REFIN Overdriven) ±1.5 ppm/°C
DYNAMIC ACCURACY The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C and AIN = –1dBFS. (Notes 5, 10) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
SINAD Signal-to-(Noise + Distortion) Ratio fIN = 2kHz l 93.8 96 dB fIN = 1MHz l 92.7 94.6 dB SNR Signal-to-Noise Ratio fIN = 2kHz l 94 96.2 dB fIN = 1MHz l 93.2 95.7 dB THD Total Harmonic Distortion fIN = 2kHz l –117 –108 dB (First Five Harmonics) fIN = 1MHz l –100 –97 dB SFDR Spurious Free Dynamic Range fIN = 2kHz l 108 119 dB fIN = 1MHz l 97 101 dB –3dB Input Bandwidth 200 MHz
INTERNAL REFERENCE 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
VREFIN Internal Reference Output Voltage IOUT = 0μA 2.043 2.048 2.053 V VREFIN Temperature Coefficient (Note 11) l ±5 ±20 ppm/°C REFIN Output Impedance 15 kΩ VREFIN Line Regulation VDD = 4.75V to 5.25V 0.3 mV/V REFIN Input Voltage Range (REFIN Overdriven) (Note 6) l 2.008 2.048 2.088 V 238518f For more information www.linear.com/LTC2385-18 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration 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 Functional Block Diagram Timing Diagram Applications Information Package Description Typical Application Related Parts
