Datasheet LTC2481 (Analog Devices) - 9
| Hersteller | Analog Devices |
| Beschreibung | 16-Bit ∆Σ ADC with Easy Drive Input Current Cancellation and I²C Interface |
| Seiten / Seite | 40 / 9 — Typical perForMance characTerisTics. Integral Nonlinearity (2x Speed. … |
| Dateiformat / Größe | PDF / 806 Kb |
| Dokumentensprache | Englisch |
Typical perForMance characTerisTics. Integral Nonlinearity (2x Speed. Mode; V. CC = 5V, VREF = 5V). CC = 5V, VREF = 2.5V)
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LTC2481
Typical perForMance characTerisTics Integral Nonlinearity (2x Speed Integral Nonlinearity (2x Speed Integral Nonlinearity (2x Speed Mode; V Mode; V Mode; V CC = 5V, VREF = 5V) CC = 5V, VREF = 2.5V) CC = 2.7V, VREF = 2.5V)
3 3 3 VCC = 5V V V CC = 5V CC = 2.7V VREF = 5V V V REF = 2.5V REF = 2.5V 2 V 2 IN(CM) = 2.5V 2 V V IN(CM) = 1.25V IN(CM) = 1.25V ) 1 1 1 REF REF REF 90°C 90°C 25°C, 90°C 0 0 0 –45°C, 25°C INL (ppm OF V –1 INL (ppm OF V –1 –45°C, 25°C INL (ppm OF V –1 –45°C –2 –2 –2 –3 –3 –3 –2.5 –2 –1.5 –1 –0.5 0 0.5 1 1.5 2 2.5 –1.25 –0.75 –0.25 0.25 0.75 1.25 –1.25 –0.75 –0.25 0.25 0.75 1.25 INPUT VOLTAGE (V) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 2481 G29 2481 G30 2481 G31
Noise Histogram RMS Noise vs VREF Offset Error vs VIN(CM) (2x Speed Mode) (2x Speed Mode) (2x Speed Mode)
16 1.0 200 10,000 CONSECUTIVE RMS = 0.86µV VCC = 5V 14 READINGS AVERAGE = 0.184mV 198 VREF = 5V VCC = 5V 0.8 196 VIN = 0V 12 VREF = 5V TA = 25°C VIN = 0V V) 194 10 GAIN = 256 V) TA = 25°C 0.6 192 8 190 6 0.4 188 RMS NOISE (µ OFFSET ERROR (µ 186 NUMBER OF READINGS (%) 4 V 0.2 CC = 5V V 184 IN = 0V 2 VIN(CM) = GND 182 TA = 25°C 0 0 180 179 181.4 183.8 186.2 188.6 0 1 2 3 4 5 –1 0 1 2 3 4 5 6 OUTPUT READING (µV) VREF (V) VIN(CM) (V) 2481 G32 2481 G33 2481 G34
Offset Error vs Temperature Offset Error vs VCC (2x Speed Mode) (2x Speed Mode)
240 250 VCC = 5V VREF = 2.5V 230 VREF = 5V VIN = 0V VIN = 0V 200 VIN(CM) = GND 220 VIN(CM) = GND TA = 25°C V) V) 210 150 200 190 100 OFFSET ERROR (µ OFFSET ERROR (µ 180 50 170 160 0 –45 –30 –15 0 15 30 45 60 75 90 2.7 3 3.5 4 4.5 5 5.5 TEMPERATURE (°C) VCC (V) 2481 G35 2481 G36 2481fd For more information www.linear.com/LTC2481 9 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics (Normal Speed) Electrical Characteristics (2x Speed) Converter Characteristics Analog Input and Reference I2C Digital Inputs and Digital Outputs Power Requirements Timing Characteristics I2C Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Applications Information Package Description Revision History Typical Application
Typical perForMance characTerisTics Integral Nonlinearity (2x Speed Integral Nonlinearity (2x Speed Integral Nonlinearity (2x Speed Mode; V Mode; V Mode; V CC = 5V, VREF = 5V) CC = 5V, VREF = 2.5V) CC = 2.7V, VREF = 2.5V)
3 3 3 VCC = 5V V V CC = 5V CC = 2.7V VREF = 5V V V REF = 2.5V REF = 2.5V 2 V 2 IN(CM) = 2.5V 2 V V IN(CM) = 1.25V IN(CM) = 1.25V ) 1 1 1 REF REF REF 90°C 90°C 25°C, 90°C 0 0 0 –45°C, 25°C INL (ppm OF V –1 INL (ppm OF V –1 –45°C, 25°C INL (ppm OF V –1 –45°C –2 –2 –2 –3 –3 –3 –2.5 –2 –1.5 –1 –0.5 0 0.5 1 1.5 2 2.5 –1.25 –0.75 –0.25 0.25 0.75 1.25 –1.25 –0.75 –0.25 0.25 0.75 1.25 INPUT VOLTAGE (V) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 2481 G29 2481 G30 2481 G31
Noise Histogram RMS Noise vs VREF Offset Error vs VIN(CM) (2x Speed Mode) (2x Speed Mode) (2x Speed Mode)
16 1.0 200 10,000 CONSECUTIVE RMS = 0.86µV VCC = 5V 14 READINGS AVERAGE = 0.184mV 198 VREF = 5V VCC = 5V 0.8 196 VIN = 0V 12 VREF = 5V TA = 25°C VIN = 0V V) 194 10 GAIN = 256 V) TA = 25°C 0.6 192 8 190 6 0.4 188 RMS NOISE (µ OFFSET ERROR (µ 186 NUMBER OF READINGS (%) 4 V 0.2 CC = 5V V 184 IN = 0V 2 VIN(CM) = GND 182 TA = 25°C 0 0 180 179 181.4 183.8 186.2 188.6 0 1 2 3 4 5 –1 0 1 2 3 4 5 6 OUTPUT READING (µV) VREF (V) VIN(CM) (V) 2481 G32 2481 G33 2481 G34
Offset Error vs Temperature Offset Error vs VCC (2x Speed Mode) (2x Speed Mode)
240 250 VCC = 5V VREF = 2.5V 230 VREF = 5V VIN = 0V VIN = 0V 200 VIN(CM) = GND 220 VIN(CM) = GND TA = 25°C V) V) 210 150 200 190 100 OFFSET ERROR (µ OFFSET ERROR (µ 180 50 170 160 0 –45 –30 –15 0 15 30 45 60 75 90 2.7 3 3.5 4 4.5 5 5.5 TEMPERATURE (°C) VCC (V) 2481 G35 2481 G36 2481fd For more information www.linear.com/LTC2481 9 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics (Normal Speed) Electrical Characteristics (2x Speed) Converter Characteristics Analog Input and Reference I2C Digital Inputs and Digital Outputs Power Requirements Timing Characteristics I2C Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Applications Information Package Description Revision History Typical Application