Datasheet LTC2484 (Analog Devices) - 9
| 制造商 | Analog Devices |
| 描述 | 24-Bit ΔΣ ADC with Easy Drive Input Current Cancellation |
| 页数 / 页 | 42 / 9 — Typical perForMance characTerisTics. Integral Nonlinearity (2x Speed. … |
| 文件格式/大小 | PDF / 768 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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LTC2484
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 VCC = 2.7V 10,000 CONSECUTIVE RMS = 0.86µV VREF = 2.5V VREF = 2.5V 14 READINGS AVERAGE = 0.184mV 2 VIN(CM) = 1.25V 2 VIN(CM) = 1.25V VCC = 5V fO = GND fO = GND 12 VREF = 5V ) VIN = 0V 1 1 REF GAIN = 256 90°C REF 90°C 10 TA = 25°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) 2484 G30 2484 G31 2484 G32
RMS Noise vs VREF Offset Error vs VIN(CM) Offset Error vs Temperature (2x Speed Mode) (2x Speed Mode) (2x Speed Mode)
1.0 200 240 V V 198 CC = 5V CC = 5V VREF = 5V 230 VREF = 5V 0.8 196 VIN = 0V VIN = 0V fO = GND 220 VIN(CM) = GND 194 TA = 25°C fO = GND 0.6 192 210 190 200 0.4 188 RMS NOISE (µV) 190 VCC = 5V OFFSET ERROR (µV) 186 OFFSET ERROR (µV) V 180 0.2 IN = 0V V 184 IN(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 VREF (V) VIN(CM) (V) TEMPERATURE (°C) 2484 G33 2484 G34 2484 G35
Offset Error vs VCC Offset Error vs VREF PSRR vs Frequency at VCC (2x Speed Mode) (2x Speed Mode) (2x Speed Mode)
250 240 0 VREF = 2.5V VCC = 5V VCC = 4.1V DC VIN = 0V 230 VIN = 0V –20 REF+ = 2.5V 200 VIN(CM) = GND VIN(CM) = GND REF– = GND fO = GND 220 fO = GND IN+ = GND TA = 25°C TA = 25°C –40 IN– = GND f 150 210 O = GND –60 TA = 25°C 200 100 –80 190 REJECTION (dB) OFFSET ERROR (µV) OFFSET ERROR (µV) –100 180 50 170 –120 0 160 –140 2 2.5 3 3.5 4 4.5 5 5.5 0 1 2 3 4 5 1 10 100 1k 10k 100k 1M VCC (V) VREF (V) FREQUENCY AT VCC (Hz) 2484 G36 2484 G37 2484 G38 2484ff For more information www.linear.com/LTC2484 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 Timing Characteristics 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 VCC = 2.7V 10,000 CONSECUTIVE RMS = 0.86µV VREF = 2.5V VREF = 2.5V 14 READINGS AVERAGE = 0.184mV 2 VIN(CM) = 1.25V 2 VIN(CM) = 1.25V VCC = 5V fO = GND fO = GND 12 VREF = 5V ) VIN = 0V 1 1 REF GAIN = 256 90°C REF 90°C 10 TA = 25°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) 2484 G30 2484 G31 2484 G32
RMS Noise vs VREF Offset Error vs VIN(CM) Offset Error vs Temperature (2x Speed Mode) (2x Speed Mode) (2x Speed Mode)
1.0 200 240 V V 198 CC = 5V CC = 5V VREF = 5V 230 VREF = 5V 0.8 196 VIN = 0V VIN = 0V fO = GND 220 VIN(CM) = GND 194 TA = 25°C fO = GND 0.6 192 210 190 200 0.4 188 RMS NOISE (µV) 190 VCC = 5V OFFSET ERROR (µV) 186 OFFSET ERROR (µV) V 180 0.2 IN = 0V V 184 IN(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 VREF (V) VIN(CM) (V) TEMPERATURE (°C) 2484 G33 2484 G34 2484 G35
Offset Error vs VCC Offset Error vs VREF PSRR vs Frequency at VCC (2x Speed Mode) (2x Speed Mode) (2x Speed Mode)
250 240 0 VREF = 2.5V VCC = 5V VCC = 4.1V DC VIN = 0V 230 VIN = 0V –20 REF+ = 2.5V 200 VIN(CM) = GND VIN(CM) = GND REF– = GND fO = GND 220 fO = GND IN+ = GND TA = 25°C TA = 25°C –40 IN– = GND f 150 210 O = GND –60 TA = 25°C 200 100 –80 190 REJECTION (dB) OFFSET ERROR (µV) OFFSET ERROR (µV) –100 180 50 170 –120 0 160 –140 2 2.5 3 3.5 4 4.5 5 5.5 0 1 2 3 4 5 1 10 100 1k 10k 100k 1M VCC (V) VREF (V) FREQUENCY AT VCC (Hz) 2484 G36 2484 G37 2484 G38 2484ff For more information www.linear.com/LTC2484 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 Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Test Circuits Timing Diagrams Applications Information Package Description Revision History Typical Application Related Parts