Datasheet LTC2412 (Analog Devices) - 6

LTC2412
TYPICAL PERFORMANCE CHARACTERISTICS Total Unadjusted Error vs Total Unadjusted Error vs Total Unadjusted Error vs Temperature (VCC = 5V, Temperature (VCC = 5V, Temperature (VCC = 2.7V, VREF = 5V) VREF = 2.5V) VREF = 2.5V)
1.5 1.5 10 VCC = 5V REF+ = 2.5V 8 1.0 1.0 REF– = GND V 6 REF = 2.5V ) VINCM = 1.25V ) 4 0.5 0.5 TA = 90°C REF REF FO = GND REF 2 0 0 TA = 90°C 0 TA = 25°C T TA = 25°C V A = 90°C –2 CC = 5V V TUE (ppm OF V –0.5 CC = 2.7V REF+ = 5V –0.5 T T TUE (ppm OF V A = –45°C TUE (ppm OF V A = 25°C –4 REF+ = 2.5V REF– = GND REF– = GND –6 –1.0 VREF = 5V TA = –45°C –1.0 VREF = 2.5V V TA = –45°C INCM = 2.5V –8 VINCM = 1.25V FO = GND FO = GND –1.5 –1.5 –10 –2.5 –2 –1.5 –1 –0.5 0 0.5 1 1.5 2 2.5 –1 –0.5 0 0.5 1 –1 –0.5 0 0.5 1 VIN (V) VIN (V) VIN (V) 2412 G01 2412 G02 2412 G03
Integral Nonlinearity vs Integral Nonlinearity vs Integral Nonlinearity vs Temperature (VCC = 5V, Temperature (VCC = 5V, Temperature (VCC = 2.7V, VREF = 5V) VREF = 2.5V) VREF = 2.5V)
1.5 1.5 10 VCC = 5V VCC = 2.7V VREF = 2.5V REF+ = 5V TA = –45°C 8 REF+ = 2.5V VINCM = 1.25V 1.0 REF– = GND 1.0 REF– = GND F ) O = GND V ) T ) 6 REF = 5V TA = 25°C A = –45°C REF VINCM = 2.5V REF T REF 4 0.5 A = 25°C FO = GND 0.5 TA = 90°C 2 0 T 0 0 A = 90°C V –2 –0.5 –0.5 CC = 5V TA = 90°C REF+ = 2.5V –4 INL ERROR (ppm OF V INL ERROR (ppm OF V REF– = GND INL ERROR (ppm OF V TA = 25°C –6 –1.0 –1.0 VREF = 2.5V V T INCM = 1.25V A = –45°C F –8 O = GND –1.5 –1.5 –10 –2.5 –2 –1.5 –1 –0.5 0 0.5 1 1.5 2 2.5 –1 –0.5 0 0.5 1 –1 –0.5 0 0.5 1 VIN (V) VIN (V) VIN (V) 2412 G04 2412 G05 2412 G06
Noise Histogram (Output Rate = Noise Histogram (Output Rate = Noise Histogram (Output Rate = 7.5Hz, VCC = 5V, VREF = 5V) 22.5Hz, VCC = 5V, VREF = 5V) 7.5Hz, VCC = 5V, VREF = 2.5V)
12 12 12 10,000 CONSECUTIVE GAUSSIAN 10,000 CONSECUTIVE GAUSSIAN 10,000 CONSECUTIVE GAUSSIAN READINGS DISTRIBUTION READINGS DISTRIBUTION READINGS DISTRIBUTION 10 VCC = 5V m = 0.105ppm 10 VCC = 5V m = 0.067ppm 10 VCC = 5V m = 0.033ppm VREF = 5V σ = 0.153ppm VREF = 5V σ = 0.151ppm VREF = 2.5V σ = 0.293ppm VIN = 0V VIN = 0V VIN = 0V 8 REF+ = 5V 8 REF+ = 5V 8 REF+ = 2.5V REF– = GND REF– = GND REF– = GND 6 IN+ = 2.5V IN+ = 2.5V IN+ = 1.25V IN– = 2.5V 6 IN– = 2.5V 6 IN– = 1.25V FO = GND FO = 460800Hz FO = GND 4 TA = 25°C 4 TA = 25°C 4 TA = 25°C NUMBER OF READINGS (%) NUMBER OF READINGS (%) NUMBER OF READINGS (%) 2 2 2 0 0 0 –0.8 –0.6 –0.4 –0.2 0 0.2 0.4 0.6 0.8 –0.8 –0.6 –0.4 –0.2 0 0.2 0.4 0.6 0.8 –1.6 –0.8 0 0.8 1.6 OUTPUT CODE (ppm OF VREF) OUTPUT CODE (ppm OF VREF) OUTPUT CODE (ppm OF VREF) 2412 G07 2412 G08 2412 G10 2412fa 6 For more information www.linear.com/LTC2412 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Converter Characteristics Analog Input and Reference Digital Inputs and Digital Outputs Power Requirements Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Test Circuit Applications Information Package Description Revision History Typical Application Related Parts