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LTC2418IGN Datasheet(PDF) 7 Page - Linear Technology |
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LTC2418IGN Datasheet(HTML) 7 Page - Linear Technology |
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7 / 48 page ![]() LTC2414/LTC2418 7 241418fa TYPICAL PERFOR A CE CHARACTERISTICS Total Unadjusted Error (VCC = 5V, VREF = 5V) Total Unadjusted Error (VCC = 5V, VREF = 2.5V) Total Unadjusted Error (VCC = 2.7V, VREF = 2.5V) Integral Nonlinearity (VCC = 5V, VREF = 5V) Integral Nonlinearity (VCC = 5V, VREF = 2.5V) Integral Nonlinearity (VCC = 2.7V, VREF = 2.5V) Noise Histogram (VCC = 5V, VREF = 5V) Noise Histogram (VCC = 2.7V, VREF = 2.5V) Long Term ADC Readings INPUT VOLTAGE (V) –2.5 –2.0 –1.0 0 1.0 2.0 3 2 1 0 –1 –2 –3 –1.5 –0.5 0.5 1.5 241418 G01 2.5 FO = GND VCC = 5V VREF = 5V VINCM = VREFCM = 2.5V TA = 25°C TA = –45°C TA = 85°C INPUT VOLTAGE (V) –1.25 3 2 1 0 –1 –2 –3 –0.75 –0.25 0.25 0.75 241418 G02 1.25 FO = GND VCC = 5V VREF = 2.5V VINCM = VREFCM = 1.25V TA = 25°C TA = 85°C TA = –45°C INPUT VOLTAGE (V) –1.25 –0.75 –0.25 0.25 0.75 241418 G03 1.25 8 6 4 2 0 –2 –4 –6 –8 FO = GND VCC = 2.7V VREF = 2.5V VINCM = VREFCM = 1.25V TA = 85°C TA = –45°C TA = 25°C INPUT VOLTAGE (V) –2.5 –2.0 –1.0 0 1.0 2.0 3 2 1 0 –1 –2 –3 –1.5 –0.5 0.5 1.5 241418 G04 2.5 FO = GND VCC = 5V VREF = 5V VINCM = VREFCM = 2.5V TA = 25°C TA = –45°C TA = 85°C INPUT VOLTAGE (V) 3 2 1 0 –1 –2 –3 241418 G05 FO = GND VCC = 5V VREF = 2.5V VINCM = VREFCM = 1.25V TA = 25°C TA = 85°C TA = –45°C –1.25 –0.75 –0.25 0.25 0.75 1.25 INPUT VOLTAGE (V) –1.25 –0.75 –0.25 0.25 0.75 241418 G06 1.25 8 6 4 2 0 –2 –4 –6 –8 FO = GND VCC = 2.7V VREF = 2.5V VINCM = VREFCM = 1.25V TA = 85°C TA = –45°C TA = 25°C OUTPUT CODE (ppm OF VREF) –1.2 30 25 20 15 10 5 0 –0.6 0 241418 G07 0.6 10,000 CONSECUTIVE READINGS FO = GND TA = 25°C VCC = 5V VREF = 5V VIN = 0V VINCM = 2.5V GAUSSIAN DISTRIBUTION m = –0.24ppm σ = 0.183ppm OUTPUT CODE (ppm OF VREF) 14 12 10 8 6 4 2 0 241418 G08 –2.4 –1.8 –1.2 –0.6 0 0.6 1.2 10,000 CONSECUTIVE READINGS FO = GND TA = 25°C VCC = 2.7V VREF = 2.5V VIN = 0V VINCM = 2.5V GAUSSIAN DISTRIBUTION m = –0.48ppm σ = 0.375ppm TIME (HOURS) 0 1.0 0.5 0 –0.5 –1.0 –1.5 10 20 30 40 LTXXXX • TPCXX 50 60 RMS NOISE = 0.19ppm FO = GND TA = 25°C VCC = 5V VREF = 5V VIN = 0V VINCM = 2.5V |
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