Datasheet LTC2494 (Analog Devices) - 7

LTC2494
typical perForMance characteristics RMS Noise vs Input Differential Voltage RMS Noise vs VIN(CM) RMS Noise vs Temperature (TA)
1.0 1.0 1.0 VCC = 5V VCC = 5V VCC = 5V VREF = 5V VREF = 5V VREF = 5V 0.9 VIN(CM) = 2.5V 0.9 VIN = 0V 0.9 VIN = 0V TA = 25°C VIN(CM) = GND VIN(CM) = GND TA = 25°C GAIN = 256 0.8 0.8 GAIN = 256 0.8 0.7 0.7 0.7 RMS NOISE (µV) 0.6 RMS NOISE (µV) 0.6 RMS NOISE (µV) 0.6 0.5 0.5 0.5 0.4 0.4 0.4 –2.5 –2 –1.5 –1 –0.5 0 0.5 1 1.5 2 2.5 –1 0 1 2 3 4 5 6 –45 –30 –15 0 15 30 45 60 75 90 INPUT DIFFERENTIAL VOLTAGE (V) VIN(CM) (V) TEMPERATURE (°C) 2494 G10 2494 G11 2494 G12
RMS Noise vs VCC RMS Noise vs VREF Offset Error vs VIN(CM)
1.0 1.0 0.3 VREF = 2.5V VCC = 5V VCC = 5V VIN = 0V VIN = 0V VREF = 5V 0.9 VIN(CM) = GND 0.9 VIN(CM) = GND ) 0.2 VIN = 0V TA = 25°C TA = 25°C REF TA = 25°C GAIN = 256 GAIN = 256 0.8 0.8 0.1 0.7 0.7 0 RMS NOISE (µV) 0.6 RMS NOISE (µV) 0.6 –0.1 0.5 0.5 OFFSET ERROR (ppm OF V –0.2 0.4 0.4 –0.3 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 0 1 2 3 4 5 –1 0 1 2 3 4 5 6 VCC (V) VREF (V) VIN(CM) (V) 2494 G13 2494 G14 2494 G15
Offset Error vs Temperature Offset Error vs VCC Offset Error vs VREF
0.3 0.3 0.3 VCC = 5V REF+ = 2.5V VCC = 5V VREF = 5V REF– = GND REF– = GND ) 0.2 V ) IN = 0V 0.2 VIN = 0V ) 0.2 VIN = 0V REF VIN(CM) = GND REF VIN(CM) = GND REF VIN(CM) = GND f TA = 25°C T 0.1 O = GND A = 25°C 0.1 0.1 0 0 0 –0.1 –0.1 –0.1 OFFSET ERROR (ppm OF V OFFSET ERROR (ppm OF V –0.2 OFFSET ERROR (ppm OF V –0.2 –0.2 –0.3 –0.3 –0.3 –45 –30 –15 0 15 30 45 60 75 90 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 0 1 2 3 4 5 TEMPERATURE (°C) VCC (V) VREF (V) 2494 G16 2494 G17 2494 G18 2494fe For more information www.linear.com/LTC2494 7