Datasheet LTC2480 (Analog Devices) - 7

LTC2480
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, 90°C REF –45°C, 25°C, 90°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) 2480 G06 2480 G04 2480 G05
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 = 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 fO = GND 85°C ) 25°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) 2480 G01 2480 G02 2480 G03
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 GAIN = 256, T 12 RMS = 0.59µV A = 25°C, RMS NOISE = 0.60µV 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 GAIN = 256 GAIN = 256 8 TA = 25°C 8 TA = 25°C 1 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) 2480 G07 2480 G08 2480 G09 2480fe For more information www.linear.com/LTC2480 7 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 Analog 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