Datasheet LTC2494 (Analog Devices) - 6
| Manufacturer | Analog Devices |
| Description | 16-Bit 8-/16-Channel ΔΣ ADC with PGA and Easy Drive Input Current Cancellation |
| Pages / Page | 38 / 6 — typical perForMance characteristics. Integral Nonlinearity. (VCC = 5V, … |
| File Format / Size | PDF / 1.1 Mb |
| Document Language | English |
typical perForMance characteristics. Integral Nonlinearity. (VCC = 5V, VREF = 5V). (VCC = 5V, VREF = 2.5V)
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LTC2494
typical perForMance characteristics Integral Nonlinearity Integral Nonlinearity Integral Nonlinearity (VCC = 5V, VREF = 5V) (VCC = 5V, VREF = 2.5V) (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 –45°C 1 1 REF 25°C REF –45°C, 25°C, 85°C REF –45°C, 25°C, 85°C 0 0 0 85°C INL (ppm OF V –1 INL (ppm OF V –1 INL (ppm OF V –1 –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) 2494 G03 2494 G01 2494 G02
Total Unadjusted Error Total Unadjusted Error Total Unadjusted Error (VCC = 5V, VREF = 5V) (VCC = 5V, VREF = 2.5V) (VCC = 2.7V, VREF = 2.5V)
12 12 12 VCC = 5V VCC = 5V VCC = 2.7V VREF = 5V VREF = 2.5V 85°C VREF = 2.5V 8 VIN(CM) = 2.5V 8 VIN(CM) = 1.25V 8 VIN(CM) = 1.25V fO = GND 85°C fO = GND 25°C fO = GND 85°C ) 25°C ) 25°C 4 4 4 REF REF REF –45°C 0 –45°C 0 –45°C 0 TUE (ppm OF V –4 TUE (ppm OF V –4 TUE (ppm OF V –4 –8 –8 –8 –12 –12 –12 –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) 2494 G04 2494 G05 2494 G06
Noise Histogram (6.8sps) Noise Histogram (7.5sps) Long-Term ADC Readings
14 14 5 10,000 CONSECUTIVE 10,000 CONSECUTIVE VCC = 5V, VREF = 5V, VIN = 0V, VIN(CM) = 2.5V READINGS READINGS 4 T 12 RMS = 0.59µV A = 25°C, RMS NOISE = 0.60µV, GAIN = 256 V 12 CC = 5V RMS = 0.60µV VCC = 2.7V AVERAGE = –0.19µV V 3 REF = 5V AVERAGE = –0.69µV VREF = 2.5V 10 VIN = 0V 10 VIN = 0V 2 TA = 25°C TA = 25°C 1 8 GAIN = 256 8 GAIN = 256 0 6 6 –1 4 4 ADC READING (µV) –2 NUMBER OF READINGS (%) NUMBER OF READINGS (%) –3 2 2 –4 0 0 –5 –3 –2.4 –1.8 –1.2 –0.6 0 0.6 1.2 1.8 –3 –2.4 –1.8 –1.2 –0.6 0 0.6 1.2 1.8 0 10 20 30 40 50 60 OUTPUT READING (µV) OUTPUT READING (µV) TIME (HOURS) 2494 G07 2494 G08 2494 G09 2494fe 6 For more information www.linear.com/LTC2494
typical perForMance characteristics Integral Nonlinearity Integral Nonlinearity Integral Nonlinearity (VCC = 5V, VREF = 5V) (VCC = 5V, VREF = 2.5V) (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 –45°C 1 1 REF 25°C REF –45°C, 25°C, 85°C REF –45°C, 25°C, 85°C 0 0 0 85°C INL (ppm OF V –1 INL (ppm OF V –1 INL (ppm OF V –1 –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) 2494 G03 2494 G01 2494 G02
Total Unadjusted Error Total Unadjusted Error Total Unadjusted Error (VCC = 5V, VREF = 5V) (VCC = 5V, VREF = 2.5V) (VCC = 2.7V, VREF = 2.5V)
12 12 12 VCC = 5V VCC = 5V VCC = 2.7V VREF = 5V VREF = 2.5V 85°C VREF = 2.5V 8 VIN(CM) = 2.5V 8 VIN(CM) = 1.25V 8 VIN(CM) = 1.25V fO = GND 85°C fO = GND 25°C fO = GND 85°C ) 25°C ) 25°C 4 4 4 REF REF REF –45°C 0 –45°C 0 –45°C 0 TUE (ppm OF V –4 TUE (ppm OF V –4 TUE (ppm OF V –4 –8 –8 –8 –12 –12 –12 –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) 2494 G04 2494 G05 2494 G06
Noise Histogram (6.8sps) Noise Histogram (7.5sps) Long-Term ADC Readings
14 14 5 10,000 CONSECUTIVE 10,000 CONSECUTIVE VCC = 5V, VREF = 5V, VIN = 0V, VIN(CM) = 2.5V READINGS READINGS 4 T 12 RMS = 0.59µV A = 25°C, RMS NOISE = 0.60µV, GAIN = 256 V 12 CC = 5V RMS = 0.60µV VCC = 2.7V AVERAGE = –0.19µV V 3 REF = 5V AVERAGE = –0.69µV VREF = 2.5V 10 VIN = 0V 10 VIN = 0V 2 TA = 25°C TA = 25°C 1 8 GAIN = 256 8 GAIN = 256 0 6 6 –1 4 4 ADC READING (µV) –2 NUMBER OF READINGS (%) NUMBER OF READINGS (%) –3 2 2 –4 0 0 –5 –3 –2.4 –1.8 –1.2 –0.6 0 0.6 1.2 1.8 –3 –2.4 –1.8 –1.2 –0.6 0 0.6 1.2 1.8 0 10 20 30 40 50 60 OUTPUT READING (µV) OUTPUT READING (µV) TIME (HOURS) 2494 G07 2494 G08 2494 G09 2494fe 6 For more information www.linear.com/LTC2494
