Datasheet LTC2442 (Analog Devices) - 6

LTC2442
TYPICAL PERFORMANCE CHARACTERISTICS Integral Non-Linearity Integral Non-Linearity Integral Non-Linearity vs Input Voltage and Temperature vs Input Voltage and Temperature
5 10 10 V VCC = 5V VCC = 5V 4 INCM = 2.048V V 8 VREF = 2.5V 8 V REF = 4.096V REF = 5V V V –40°C V 3 CC = 5V 6 INCM = 1.25 INCM = 1.25 V+ = 5V F 6 O = GND –40°C FO = GND 2 V– = 0V 4 V+ = 7V 4 V+ = 7V V– = –2V V– = –2V 1 2 2 0 0 0 –1 –2 –2 25°C 90°C INL ERROR (ppm) INL ERROR (ppm) –2 –4 INL ERROR (ppm) –4 25°C –3 –6 90°C –6 –4 –8 –8 –5 –10 –10 –2.048 –1.024 0 1.024 2.048 –1.25 –0.75 –0.25 0.25 0.75 1.25 –2.5 –1.5 –0.5 0.5 1.5 2.5 VIN DIFFERENTIAL (V) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 2442 TA02 2442 G02 2442 G03
INL vs Op Amp Positive Supply INL vs Op Amp Negative Supply Voltage (V+) Voltage (V–) Offset Error vs Supply Voltage
10 10 5.0 VCC = 5V VCC = 5V VREF = 2.5V OSR = 32768 8 V– = GND 8 V+ = 5.5 V + REF = 2.5V FO = GND F F ) – 6 O = GND O = GND VREF = GND TA = 25°C V 6 REF = 5V VREF = 5V REF 2.5 SEL+ = SEL– = GND 4 VINCM = 2.5V 4 VINCM = 2.5V 2 2 0 0 0 –2 –2 V– = –2V INL ERROR (ppm) V+ = 5.5V –4 V+ = 5.25V INL ERROR (ppm) –4 V– = –1V V– = 0V –2.5 –6 –6 OFFSET ERROR (ppm OF V –8 –8 V+ = 5V –10 –10 –5.0 –2.5 –1.5 –0.5 0.5 1.5 2.5 –2.5 –1.5 –0.5 0.5 1.5 2.5 4.5 4.7 4.9 5.1 5.3 5.5 VIN (V) VIN (V) VCC (V) 2442 G04 2442 G05 2442 G06
Offset Error vs Common Mode Offset Error vs Conversion Rate Input Voltage Offset Error vs Temperature
5.0 5.0 5.0 VCC = 5V SEL+ = SEL– = GND VCC = 5V SEL+ = SEL– = VINCM VREF = 5V FO = GND VREF = 5V OSR = 32768 ) V + = 5V T ) REF A = 25°C V + REF = 5V F – – O = GND REF VREF = GND V+ = 5V REF 2.5 2.5 VREF = GND TA = 25°C 2.5 V– = –2V VCC = 5V VCC = 5.5V VCC = 4.5V 0 0 0 VCC = 4.5V VCC = 5.5V, 5V V V OFFSET ERROR (µV) REF = 2.5V REF = 5V V + = 2.5V V + = 5V –2.5 –2.5 –2.5 REF REF V – = GND V – = GND OFFSET ERROR (ppm OF V OFFSET ERROR (ppm OF V REF REF SEL+ = SEL– = GND SEL+ = SEL– = GND OSR = 256 OSR = 256 F F –5.0 –5.0 –5.0 O = GND O = GND 0 500 1000 1500 2000 2500 3000 3500 0 1 2 3 4 5 –55 –25 5 35 65 95 125 CONVERSION RATE (Hz) VINCM (V) TEMPERATURE (°C) 2442 G07 2442 G08 2442 G09 2442fb 6 For more information www.linear.com/LTC2442