
LTC2492
7
2492fd
INPUT DIFFERENTIAL VOLTAGE (V)
0.4
RMS
NOISE
(μV)
0.6
0.8
1.0
0.5
0.7
0.9
–1.5
–0.5
0.5
1.5
2492 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
(μV)
0.8
0.9
1.0
24
2492 G11
0.7
0.6
01
35
6
0.5
0.4
VCC = 5V
VREF = 5V
VIN = 0V
TA = 25°C
TEMPERATURE (°C)
–45
0.4
RMS
NOISE
(μV)
0.5
0.6
0.7
0.8
1.0
–30 –15
15
0
304560
2492 G12
75
90
0.9
VCC = 5V
VREF = 5V
VIN = 0V
VIN(CM) = GND
VREF (V)
0
0.4
RMS
NOISE
(μV)
0.5
0.6
0.7
0.8
0.9
1.0
123
4
2492 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
24
2492 G15
0
–0.1
01
35
6
–0.2
–0.3
VCC = 5V
VREF = 5V
VIN = 0V
TA = 25°C
VCC (V)
2.7
RMS
NOISE
(μV)
0.8
0.9
1.0
3.9
4.7
2492 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
TEMPERATURE (°C)
–45
–0.3
OFFSET
ERROR
(ppm
OF
V
REF
)
–0.2
0
0.1
0.2
–15
15
30
90
2492 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
2492 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
123
4
2492 G18
5
VCC = 5V
REF– = GND
VIN = 0V
VIN(CM) = GND
TA = 25°C
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