Datasheet LTC2487 (Analog Devices) - 7

LTC2487
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 TA = 25°C VIN(CM) = GND f fO = GND f 0.8 O = GND 0.8 O = GND GAIN = 256 0.8 GAIN = 256 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) 2487 G10 2487 G11 2487 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 f f f 0.8 O = GND O = GND O = GND GAIN = 256 0.8 GAIN = 256 0.1 0.7 0.7 0 RMS NOISE (µV) 0.6 RMS NOISE (µV) 0.6 –0.1 0.5 OFFSET ERROR (ppm of V 0.5 –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) 2487 G13 2487 G14 2487 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 VIN = 0V ) 0.2 VIN = 0V ) 0.2 VIN = 0V V REF VIN(CM) = GND REF VIN(CM) = GND REF IN(CM) = GND f T T 0.1 O = GND 0.1 A = 25°C A = 25°C f 0.1 O = GND fO = GND 0 0 0 –0.1 –0.1 –0.1 OFFSET ERROR (ppm of V OFFSET ERROR (ppm of V OFFSET ERROR (ppm of V –0.2 –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) 2487 G16 2487 G17 2487 G18 2487fg For more information www.linear.com/LTC2487 7 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics (Normal Speed) Electrical Characteristics (2x Speed) Converter Characteristics Analog Input and Reference I2C Inputs and Digital Outputs Power Requirements Digital Inputs and Digital Outputs I2C Timing Characteristics Typical Performance Characteristics Functional Block Diagram Applications Information Package Description Revision History Typical Application Related Parts