TYPICAL CHARACTERISTICS (Cont.)
At TA = +25°C, AVDD = +5V, DVDD = +3V, fCLK = 2.4576MHz, and VREF = +2.5V, unless otherwise specified.
INTEGRAL NONLINEARITY vs ANALOG SUPPLY
VREF = AVDD
INTEGRAL NONLINEARITY vs ANALOG SUPPLY
VREF = AVDD/2
20
18
16
14
12
10
8
20
18
16
14
12
10
8
T = 85°C
T = –40°C
T = 25°C
T = –40°C
T = 25°C
6
6
4
4
2
2
T = 85°C
0
0
1.5
–45
–5
2
2.5
3
3.5
4
4.5
5
5.5
95
5
1.5
2
2.5
3
3.5
4
4.5
5
5.5
Analog Supply (V)
Analog Supply (V)
GAIN vs TEMPERATURE
OFFSET vs TEMPERATURE
1.00008
1.00006
1.00004
1.00002
1
1
0.5
0
0.99998
0.99996
0.99994
0.99992
0.9999
–0.5
–1
–45
–25
–5
15
35
55
75
95
–25
–5
15
35
55
75
Temperature (°C)
Temperature (°C)
NOISE vs INPUT SIGNAL
NOISE vs TEMPERATURE
1.6
1.5
1.4
1.3
1.2
1.1
1
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0.9
0.8
0.7
0.6
–3
–1
1
3
–45
–25
–5
15
35
55
75
95
VIN (V)
Temperature (°C)
ADS1244
5
SBAS273
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