LTC2498
7
2498ff
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
(ppm
OF
V
REF
)
0.6
0.8
1.0
0.5
0.7
0.9
–1.5
–0.5
0.5
1.5
2498 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
2498 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
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
2498 G12
75 90
0.9
VCC = 5V
VREF = 5V
VIN = 0V
VIN(CM) = GND
VCC (V)
2.7
RMS
NOISE
(
V) 0.8
0.9
1.0
3.9
4.7
2498 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
VREF (V)
0
0.4
RMS
NOISE
(V)
0.5
0.6
0.7
0.8
0.9
1.0
1
2
3
4
2498 G14
5
VCC = 5V
VIN = 0V
VIN(CM) = GND
TA = 25°C
VIN(CM) (V)
–1
OFFSET
ERROR
(ppm
OF
V
REF
)
0.1
0.2
0.3
2
4
2498 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
2498 G16
–0.1
–30
0
45 60 75
0.3
VCC = 5V
VREF = 5V
VIN = 0V
VIN(CM) = GND
fO = GND
VCC (V)
2.7
OFFSET
ERROR
(ppm
OF
V
REF
)
0.1
0.2
0.3
3.9
4.7
2498 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
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
2498 G18
5
VCC = 5V
REF– = GND
VIN = 0V
VIN(CM) = GND
TA = 25°C