![](http://datasheet.mmic.net.cn/Linear-Technology/LTC2485CDD-TRPBF_datasheet_101594/LTC2485CDD-TRPBF_7.png)
LTC2485
7
2485fc
TYPICAL PERFORMANCE CHARACTERISTICS
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
RMS Noise
vs Input Differential Voltage
RMS Noise vs VIN(CM)
RMS Noise vs Temperature (TA)
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
2485 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
2485 G11
0.7
0.6
01
35
6
0.5
0.4
VCC = 5V
VREF = 5V
VIN = 0V
VIN(CM) = GND
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
2485 G12
75
90
0.9
VCC = 5V
VREF = 5V
VIN = 0V
VIN(CM) = GND
VCC (V)
2.7
RMS
NOISE
(μV)
0.8
0.9
1.0
3.9
4.7
2485 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
(μV)
0.5
0.6
0.7
0.8
0.9
1.0
123
4
2485 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
2485 G15
0
–0.1
01
35
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
2485 G16
–0.1
–30
0
45
60
75
0.3
VCC = 5V
VREF = 5V
VIN = 0V
VIN(CM) = GND
VCC (V)
2.7
OFFSET
ERROR
(ppm
OF
V
REF
)
0.1
0.2
0.3
3.9
4.7
2485 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
2485.G18
5
VCC = 5V
REF– = GND
VIN = 0V
VIN(CM) = GND
TA = 25°C