Datasheet LTC2440 (Analog Devices) - 6

LTC2440
TYPICAL PERFORMANCE CHARACTERISTICS Integral Nonlinearity Integral Nonlinearity fOUT = 6.875Hz vs Conversion Rate Integral Nonlinearity vs VINCM
10 10.0 10 VCC = 5V VINCM = 2.5V VCC = 5V –2.5V ≤ VIN ≤ 2.5V VREF = 5V fO = GND VREF = 5V VINCM = 2.5V V + = 5V T V + = 5V f V ) REF– A = 25°C ) REF– O = GND ) INCM = 3.75V 5 VREF = GND 7.5 VREF = GND TA = 25°C 5 REF REF REF VINCM = 2.5V 0 5.0 0 VINCM = 1.25V INL ERROR (ppm OF V –5 INL ERROR (ppm OF V 2.5 INL ERROR (ppm OF V –5 VCC = 5V OSR = 32768 VREF = 2.5V fO = GND V + REF = 2.5V TA = 25°C V – REF = GND –10 0 –10 –2.5 –2 –1.5 –1 –0.5 0 0.5 1 1.5 2 2.5 0 500 1000 1500 2000 2500 3000 3500 –1.25 –0.75 –0.25 0.25 0.75 1.25 VIN (V) CONVERSION RATE (Hz) VIN (V) 2440 G10 2440 G11 2440 G12
Integral Nonlinearity Integral Nonlinearity vs Temperature vs Temperature –Full-Scale Error vs VREF
10 10 20 VCC = 5V VINCM = 1.25V VCC = 5V VINCM = 2.5V VREF = 2.5V OSR = 32768 VREF = 5V OSR = 32768 ) V + = 2.5V f V + REF = 5V fO = GND REF ) REF– O = GND ) – 5 VREF = GND 5 VREF = GND 10 REF REF TA = –55°C TA = 125°C TA = 125°C 0 0 0 TA = 25°C T TA = 25°C A = –25°C INL ERROR (ppm OF V –5 INL ERROR (ppm OF V –5 –10 –FULL-SCALE ERROR (ppm OF V –10 –10 –20 –1.25 –0.75 –0.25 0.25 0.75 1.25 –2.5 –2 –1.5 –1 –0.5 0 0.5 1 1.5 2 2.5 0 1 2 3 4 5 VIN (V) VIN (V) VREF (V) 2440 G13 2440 G14 2440 G15
+Full-Scale Error vs VREF –Full-Scale Error vs VCC +Full-Scale Error vs VCC
20 10 0 VREF = 2.5V OSR = 32768 ) 9 ) –1 V + REF = 2.5V f – O = GND REF REF V = GND T 8 REF –2 REF A = 25°C 10 VINCM = 1.25V 7 –3 6 –4 0 5 –5 4 –6 3 –7 –10 V OSR = 32768 2 REF = 2.5V V + REF = 2.5V fO = GND –8 +FULL-SCALE ERROR (ppm OF V FULL-SCALE ERROR (ppm OF V – FULL-SCALE ERROR (ppm OF V 1 VREF = GND TA = 25°C –9 VINCM = 1.25V –20 0 –10 0 1 2 3 4 5 4.5 4.7 4.9 5.1 5.3 5.5 4.5 4.7 4.9 5.1 5.3 5.5 VREF (V) VCC (V) VCC (V) 2440 G16 2440 G17 2440 G18 2440fe 6 For more information www.linear.com/LTC2440 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Typical Performance Characteristics Pin Functions Typical Application Related Parts