Datasheet LTC2486 (Analog Devices) - 9
| 制造商 | Analog Devices |
| 描述 | 16-Bit 2-/4-Channel ∆Σ ADC with PGA and Easy Drive Input Current Cancellation |
| 页数 / 页 | 36 / 9 — TYPICAL PERFORMANCE CHARACTERISTICS. Integral Nonlinearity (2x Speed. … |
| 文件格式/大小 | PDF / 502 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. Integral Nonlinearity (2x Speed. Mode; VCC = 5V, VREF = 5V)
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LTC2486
TYPICAL PERFORMANCE CHARACTERISTICS Integral Nonlinearity (2x Speed Integral Nonlinearity (2x Speed Integral Nonlinearity (2x Speed Mode; VCC = 5V, VREF = 5V) Mode; VCC = 5V, VREF = 2.5V) Mode; VCC = 2.7V, VREF = 2.5V)
3 3 3 VCC = 5V VCC = 5V VCC = 2.7V VREF = 5V VREF = 2.5V VREF = 2.5V 2 VIN(CM) = 2.5V 2 VIN(CM) = 1.25V 2 VIN(CM) = 1.25V fO = GND fO = GND fO = GND ) 1 1 1 REF REF 85°C REF 85°C 25°C, 85°C 0 0 0 INL (ppm OF V –1 INL (ppm OF V –1 –45°C, 25°C INL (ppm OF V –1 –45°C, 25°C –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) 2486 G27 2486 G28 2486 G29
Noise Histogram RMS Noise vs VREF (2x Speed Mode) (2x Speed Mode)
16 1.0 10,000 CONSECUTIVE RMS = 0.85µV 14 READINGS AVERAGE = 0.184mV VCC = 5V 0.8 12 VREF = 5V VIN = 0V 10 TA = 25°C GAIN = 128 0.6 8 6 0.4 RMS NOISE (µV) VCC = 5V VIN = 0V NUMBER OF READINGS (%) 4 0.2 VIN(CM) = GND f 2 O = GND TA = 25°C GAIN = 128 0 0 179 181.4 183.8 186.2 188.6 0 1 2 3 4 5 OUTPUT READING (µV) VREF (V) 2486 G30 2486 G31
Offset Error vs VIN(CM) Offset Error vs Temperature (2x Speed Mode) (2x Speed Mode)
200 240 V V 198 CC = 5V CC = 5V VREF = 5V 230 VREF = 5V 196 VIN = 0V VIN = 0V fO = GND 220 VIN(CM) = GND 194 TA = 25°C fO = GND 192 210 190 200 188 190 OFFSET ERROR (µV) 186 OFFSET ERROR (µV) 180 184 182 170 180 160 –1 0 1 2 3 4 5 6 –45 –30 –15 0 15 30 45 60 75 90 VIN(CM) (V) TEMPERATURE (°C) 2486 G32 2486 G33 2486fe For more information www.linear.com/LTC2486 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 Digital Inputs and Digital Outputs Power Requirements Typical Performance Characteristics Pin Functions Functional Block Diagram Test Circuits Timing Diagrams Applications Information Package Description Revision History Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS Integral Nonlinearity (2x Speed Integral Nonlinearity (2x Speed Integral Nonlinearity (2x Speed Mode; VCC = 5V, VREF = 5V) Mode; VCC = 5V, VREF = 2.5V) Mode; VCC = 2.7V, VREF = 2.5V)
3 3 3 VCC = 5V VCC = 5V VCC = 2.7V VREF = 5V VREF = 2.5V VREF = 2.5V 2 VIN(CM) = 2.5V 2 VIN(CM) = 1.25V 2 VIN(CM) = 1.25V fO = GND fO = GND fO = GND ) 1 1 1 REF REF 85°C REF 85°C 25°C, 85°C 0 0 0 INL (ppm OF V –1 INL (ppm OF V –1 –45°C, 25°C INL (ppm OF V –1 –45°C, 25°C –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) 2486 G27 2486 G28 2486 G29
Noise Histogram RMS Noise vs VREF (2x Speed Mode) (2x Speed Mode)
16 1.0 10,000 CONSECUTIVE RMS = 0.85µV 14 READINGS AVERAGE = 0.184mV VCC = 5V 0.8 12 VREF = 5V VIN = 0V 10 TA = 25°C GAIN = 128 0.6 8 6 0.4 RMS NOISE (µV) VCC = 5V VIN = 0V NUMBER OF READINGS (%) 4 0.2 VIN(CM) = GND f 2 O = GND TA = 25°C GAIN = 128 0 0 179 181.4 183.8 186.2 188.6 0 1 2 3 4 5 OUTPUT READING (µV) VREF (V) 2486 G30 2486 G31
Offset Error vs VIN(CM) Offset Error vs Temperature (2x Speed Mode) (2x Speed Mode)
200 240 V V 198 CC = 5V CC = 5V VREF = 5V 230 VREF = 5V 196 VIN = 0V VIN = 0V fO = GND 220 VIN(CM) = GND 194 TA = 25°C fO = GND 192 210 190 200 188 190 OFFSET ERROR (µV) 186 OFFSET ERROR (µV) 180 184 182 170 180 160 –1 0 1 2 3 4 5 6 –45 –30 –15 0 15 30 45 60 75 90 VIN(CM) (V) TEMPERATURE (°C) 2486 G32 2486 G33 2486fe For more information www.linear.com/LTC2486 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 Digital Inputs and Digital Outputs Power Requirements Typical Performance Characteristics Pin Functions Functional Block Diagram Test Circuits Timing Diagrams Applications Information Package Description Revision History Typical Application Related Parts