LTC2430/LTC2431
7
24301f
TYPICAL PERFOR A CE CHARACTERISTICS
UW
RMS Noise vs VINCM
RMS Noise vs Temperature (TA)
VINCM (V)
–1
0
2.4
RMS
NOISE
(
V)
2.8
3.4
1
3
4
24301 G11
2.6
3.2
3.0
2
5
6
VCC = 5V
REF+ = 5V
REF– = GND
VIN = 0V
VINCM = GND
FO = GND
TA = 25°C
TEMPERATURE (
°C)
–50
2.4
RMS
NOISE
(
V)
2.6
2.8
3.0
3.2
3.4
–25
025
50
24301 G12
75
100
VCC = 5V
VREF = 5V
VIN = 0V
VINCM = GND
FO = GND
RMS Noise vs VCC
VCC (V)
2.7
3.1
2.4
RMS
NOISE
(
V)
2.8
3.4
3.5
4.3
4.7
24301 G13
2.6
3.2
3.0
3.9
5.1
5.5
REF+ = 2.5V
REF– = GND
VIN = 0V
VINCM = GND
FO = GND
TA = 25°C
RMS Noise vs VREF
VREF (V)
0
RMS
NOISE
(
V)
3.0
3.2
3.4
4
24301 G14
2.8
2.6
2.4
1
2
3
5
VCC = 5V
REF– = GND
VIN = 0V
VINCM = GND
FO = GND
TA = 25°C
Offset Error vs VINCM
VINCM (V)
–1
–1.0
OFFSET
ERROR
(ppm
OF
V
REF
)
–0.8
–0.4
–0.2
0
1.0
0.4
1
3
4
24301 G15
–0.6
0.6
0.8
0.2
0
2
5
6
VCC = 5V
REF+ = 5V
REF– = GND
VIN = 0V
FO = GND
TA = 25°C
Offset Error vs Temperature
Offset Error vs VREF
TEMPERATURE (
°C)
–45
–1.0
OFFSET
ERROR
(ppm
OF
V
REF
)
–0.8
–0.4
–0.2
0
1.0
0.4
–15
15
30
90
24301 G16
–0.6
0.6
0.8
0.2
–30
0
45
60
75
VCC = 5V
VREF =5V
VIN = 0V
VINCM = GND
FO = GND
Offset Error vs VCC
VCC (V)
2.7
–1.0
OFFSET
ERROR
(ppm
OF
V
REF
)
–0.8
–0.4
–0.2
0
1.0
0.4
3.5
4.3
4.7
24301 G17
–0.6
0.6
0.8
0.2
3.1
3.9
5.1
5.5
REF+ = VCC
REF– = GND
VIN = 0V
VINCM = GND
FO = GND
TA = 25°C
VREF (V)
0
OFFSET
ERROR
(ppm
OF
V
REF
)
1
3
5
4
24301 G18
–1
–3
0
2
4
–2
–4
–5
1
2
3
5
VCC = 5V
REF– = GND
VIN = 0V
VINCM = GND
FO = GND
TA = 25°C
Full-Scale Error vs Temperature
TEMPERATURE (
°C)
–45
–20
FULL-SCALE
ERROR
(ppm
OF
V
REF
)
–10
0
10
20
–30 –15
0
15
24301 G19
30
45
60
75
90
+FS ERROR
–FS ERROR
VCC = 5V
VREF = 5V
FO = GND
VINCM = 2.5V