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SBAS288D − JUNE 2003 − REVISED AUGUST 2004
TYPICAL CHARACTERISTICS (continued)
T
A
= +25°C, AVDD = 5V, DVDD = 1.8V, f
CLKIN
= 7.68MHz, PGA = 1, and V = 2.5V, unless otherwise noted.
REF
EFFECTIVE NUMBER OF BITS
vs INPUT VOLTAGE
EFFECTIVE NUMBER OF BITS
vs TEMPERATURE
23
22
21
20
19
18
23
22
21
20
19
18
PGA = 1
PGA = 1
Data Rate = 1kSPS
Data Rate = 1kSPS
Data Rate = 30kSPS
Data Rate = 30kSPS
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
Input Voltage, VIN (V)
−
−
−
10
50
30
10
30
50
70
90
110
_
Temperature ( C)
INTEGRAL NONLINEARITY vs INPUT SIGNAL
INTEGRAL NONLINEARITY vs PGA
0.0006
0.0004
0.0002
0
0.0009
0.0008
0.0007
0.0006
0.0005
0.0004
0.0003
0.0002
0.0001
0
−
_
40 C
_
+125 C
Buffer Off
_
_
+85 C
+25 C
Buffer On
−
−
−
0.0002
0.0004
0.0006
PGA = 1
−
−
−
−
−
1
5
4
3
2
0
1
2
3
4
5
1
2
4
8
16
32
64
Input Voltage, VIN (V)
PGA Setting
ANALOG SUPPLY CURRENT vs TEMPERATURE
PGA = 64, Buffer On
ANALOG SUPPLY CURRENT vs PGA
Buffer On
50
45
40
35
30
25
20
15
10
5
40
35
30
25
20
15
10
5
Buffer Off
PGA = 64, Buffer Off
PGA = 1, Buffer On
PGA = 1, Buffer Off
0
0
−
−
−
10
50
30
10
30
50
70
90
110
1
2
4
8
16
32
64
_
Temperature ( C)
PGA Setting
10
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