TYPICAL CHARACTERISTICS
At TA = +25°C, AVDD = +5V, DVDD = +3V, fCLK = 2.4576MHz, and VREF = +2.5V, unless otherwise specified.
ANALOG CURRENT vs TEMPERATURE
AVDD = 5V, fCLK = 4.9152MHz
DIGITAL CURRENT vs TEMPERATURE
110
105
100
95
12
10
8
DVDD = 3V, fCLK = 4.9152MHz
6
90
85
4
80
AVDD = 3V, fCLK = 2.4576MHz
2
75
DVDD = 1.8V, fCLK = 2.4576MHz
0
70
–45
2.5
–5
–25
–5
15
35
55
75
95
–45
–25
–5
15
35
55
75
95
Temperature (°C)
Temperature (°C)
ANALOG CURRENT vs ANALOG SUPPLY
DIGITAL CURRENT vs DIGITAL SUPPLY
94
92
90
88
86
84
82
80
20
18
16
14
12
10
8
fCLK = 4.9152MHz
fCLK = 4.9152MHz
fCLK = 2.4576MHz
6
4
2
fCLK = 2.4576MHz
3
0
3
3.5
4
4.5
5
5.5
1.5
2
2.5
3.5
4
Analog Supply (V)
Digital Supply (V)
INTEGRAL NONLINEARITY vs VIN
AVDD = 3V, VREF = 1.25V
INTEGRAL NONLINEARITY vs VIN
3
2
3
2
AVDD = 5V, VREF = 2.5V
T = 25°C
1
1
T = –40°C
T = –40°C
0
0
T = 25°C
–1
–2
–3
–1
–2
–3
T = 85°C
–3
T = 85°C
–2.5
–1.5
–0.5
0.5
1.5
2.5
–1
1
3
5
VIN (V)
VIN (V)
ADS1244
4
SBAS273
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