Datasheet LTC2492 (Analog Devices) - 9
| 制造商 | Analog Devices |
| 描述 | 24-Bit 2-/4-Channel ΔΣ ADC with Easy Drive Input Current Cancellation |
| 页数 / 页 | 38 / 9 — Typical perFormance characTerisTics. Integral Nonlinearity (2x Speed. … |
| 文件格式/大小 | PDF / 619 Kb |
| 文件语言 | 英语 |
Typical perFormance characTerisTics. Integral Nonlinearity (2x Speed. Noise Histogram. Mode; VCC = 5V, VREF = 2.5V)
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LTC2492
Typical perFormance characTerisTics Integral Nonlinearity (2x Speed Integral Nonlinearity (2x Speed Noise Histogram Mode; VCC = 5V, VREF = 2.5V) Mode; VCC = 2.7V, VREF = 2.5V) (2x Speed Mode)
3 3 16 VCC = 5V V 10,000 CONSECUTIVE RMS = 0.85µV CC = 2.7V VREF = 2.5V VREF = 2.5V 14 READINGS AVERAGE = 0.184mV 2 V 2 IN(CM) = 1.25V V V IN(CM) = 1.25V CC = 5V fO = GND fO = GND 12 VREF = 5V ) VIN = 0V 1 1 REF REF 10 TA = 25°C 90°C 90°C 0 0 8 6 INL (ppm OF V –1 –45°C, 25°C INL (ppm OF V –1 –45°C, 25°C NUMBER OF READINGS (%) 4 –2 –2 2 –3 –3 0 –1.25 –0.75 –0.25 0.25 0.75 1.25 –1.25 –0.75 –0.25 0.25 0.75 1.25 179 181.4 183.8 186.2 188.6 INPUT VOLTAGE (V) INPUT VOLTAGE (V) OUTPUT READING (µV) 2492 G28 2492 G29 2492 G30
RMS Noise Offset Error Offset Error vs VREF (2x Speed Mode) vs VIN(CM) (2x Speed Mode) vs Temperature (2x Speed Mode)
1.0 200 240 VCC = 5V VCC = 5V 198 VREF = 5V 230 VREF = 5V VIN = 0V V 0.8 196 IN = 0V fO = GND 220 VIN(CM) = GND 194 TA = 25°C fO = GND 210 0.6 192 190 200 0.4 188 190 RMS NOISE (µV) V OFFSET ERROR (µV) 186 OFFSET ERROR (µV) CC = 5V V 180 0.2 IN = 0V 184 VIN(CM) = GND fO = GND 182 170 TA = 25°C 0 180 160 0 1 2 3 4 5 –1 0 1 2 3 4 5 6 –45 –30 –15 0 15 30 45 60 75 90 V V REF (V) IN(CM) (V) TEMPERATURE (°C) 2492 G31 2492 G32 2492 G33 2492fe For more information www.linear.com/LTC2492 9 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics (Normal Speed) Pin Configuration Electrical Characteristics (2x Speed) Converter Characteristics Analog Input and Reference Digital Inputs and Digital Outputs Power Requirements Digital Inputs and Digital Outputs 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 Noise Histogram Mode; VCC = 5V, VREF = 2.5V) Mode; VCC = 2.7V, VREF = 2.5V) (2x Speed Mode)
3 3 16 VCC = 5V V 10,000 CONSECUTIVE RMS = 0.85µV CC = 2.7V VREF = 2.5V VREF = 2.5V 14 READINGS AVERAGE = 0.184mV 2 V 2 IN(CM) = 1.25V V V IN(CM) = 1.25V CC = 5V fO = GND fO = GND 12 VREF = 5V ) VIN = 0V 1 1 REF REF 10 TA = 25°C 90°C 90°C 0 0 8 6 INL (ppm OF V –1 –45°C, 25°C INL (ppm OF V –1 –45°C, 25°C NUMBER OF READINGS (%) 4 –2 –2 2 –3 –3 0 –1.25 –0.75 –0.25 0.25 0.75 1.25 –1.25 –0.75 –0.25 0.25 0.75 1.25 179 181.4 183.8 186.2 188.6 INPUT VOLTAGE (V) INPUT VOLTAGE (V) OUTPUT READING (µV) 2492 G28 2492 G29 2492 G30
RMS Noise Offset Error Offset Error vs VREF (2x Speed Mode) vs VIN(CM) (2x Speed Mode) vs Temperature (2x Speed Mode)
1.0 200 240 VCC = 5V VCC = 5V 198 VREF = 5V 230 VREF = 5V VIN = 0V V 0.8 196 IN = 0V fO = GND 220 VIN(CM) = GND 194 TA = 25°C fO = GND 210 0.6 192 190 200 0.4 188 190 RMS NOISE (µV) V OFFSET ERROR (µV) 186 OFFSET ERROR (µV) CC = 5V V 180 0.2 IN = 0V 184 VIN(CM) = GND fO = GND 182 170 TA = 25°C 0 180 160 0 1 2 3 4 5 –1 0 1 2 3 4 5 6 –45 –30 –15 0 15 30 45 60 75 90 V V REF (V) IN(CM) (V) TEMPERATURE (°C) 2492 G31 2492 G32 2492 G33 2492fe For more information www.linear.com/LTC2492 9 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics (Normal Speed) Pin Configuration Electrical Characteristics (2x Speed) Converter Characteristics Analog Input and Reference Digital Inputs and Digital Outputs Power Requirements Digital Inputs and Digital Outputs Typical Performance Characteristics Pin Functions Functional Block Diagram Test Circuits Timing Diagrams Applications Information Package Description Revision History Typical Application Related Parts