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