Datasheet LTC2430, LTC2431 (Analog Devices) - 7

LTC2430/LTC2431
W U TYPICAL PERFOR A CE CHARACTERISTICS RMS Noise vs VINCM RMS Noise vs Temperature (TA) RMS Noise vs VCC
3.4 3.4 3.4 VCC = 5V VCC = 5V REF+ = 2.5V REF+ = 5V VREF = 5V REF– = GND REF– = GND V V 3.2 IN = 0V 3.2 IN = 0V V 3.2 IN = 0V VINCM = GND VINCM = GND VINCM = GND FO = GND FO = GND µV) FO = GND µV) TA = 25°C 3.0 µV) T 3.0 A = 25°C 3.0 2.8 2.8 2.8 RMS NOISE ( RMS NOISE ( RMS NOISE ( 2.6 2.6 2.6 2.4 2.4 2.4 –1 0 1 2 3 4 5 6 –50 –25 0 25 50 75 100 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 VINCM (V) TEMPERATURE (°C) VCC (V) 24301 G11 24301 G12 24301 G13
RMS Noise vs VREF Offset Error vs VINCM Offset Error vs Temperature
3.4 1.0 1.0 VCC = 5V REF– = GND 0.8 0.8 V ) 3.2 IN = 0V 0.6 0.6 VINCM = GND REF REF FO = GND 0.4 0.4 µV) TA = 25°C 3.0 0.2 0.2 0 0 2.8 –0.2 –0.2 RMS NOISE ( VCC = 5V –0.4 REF+ = 5V –0.4 VCC = 5V REF– = GND VREF =5V 2.6 OFFSET ERROR (ppm OF V –0.6 –0.6 V OFFSET ERROR (ppm OF V IN = 0V VIN = 0V –0.8 FO = GND –0.8 VINCM = GND TA = 25°C FO = GND 2.4 –1.0 –1.0 0 1 2 3 4 5 –1 0 1 2 3 4 5 6 –45 –30 –15 0 15 30 45 60 75 90 V TEMPERATURE (°C) REF (V) VINCM (V) 24301 G14 24301 G15 24301 G16
Offset Error vs V Offset Error vs V CC REF Full-Scale Error vs Temperature
1.0 5 20 0.8 4 ) 0.6 3 REF +FS ERROR REF REF 10 0.4 2 0.2 1 VCC = 5V V 0 0 0 REF = 5V FO = GND –0.2 –1 VINCM = 2.5V REF+ = VCC VCC = 5V –0.4 REF– = GND –2 REF– = GND –FS ERROR –10 VIN = 0V VIN = 0V OFFSET ERROR (ppm OF V –0.6 OFFSET ERROR (ppm OF V –3 VINCM = GND VINCM = GND FULL-SCALE ERROR (ppm OF V –0.8 FO = GND –4 FO = GND TA = 25°C TA = 25°C –1.0 –5 –20 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 0 1 2 3 4 5 –45 –30 –15 0 15 30 45 60 75 90 VCC (V) VREF (V) TEMPERATURE (°C) 24301 G17 24301 G18 24301 G19 24301f 7