Datasheet

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SBAS203J − MARCH 2002 − REVISED JANUARY 2008
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17
TYPICAL CHARACTERISTICS (Continued)
AV
DD
= +5V, DV
DD
= +5V, f
OSC
= 8MHz, PGA = 1, f
MOD
= 15.625Hz, Bipolar, Buffer ON, and V
REF
= (REF IN+) − (REF IN−) = +2.5V, unless otherwise specified.
10
8
6
4
2
0
−
2
−
4
−
6
−
8
−
10
INTEGRAL NONLINEARITY vs INPUT SIGNAL
V
IN
(V)
−
2.5
−
2
−
1
−
0.5
−
1.5 0 0.5 1 1.5 2 2.5
INL (ppm of FS)
−
40
_
C
+25
_
C
+85
_
C
30
20
10
0
−
10
−
20
−
30
INTEGRAL NONLINEARITY vs INPUT SIGNAL
V
IN
(V)
V
IN
=
−
V
REF
0V
IN
=+V
REF
V
REF
=AV
DD
, Buffer OFF
INL (ppm of FS)
35
30
25
20
15
10
5
0
ADC INTEGRAL NONLINEARITY vs V
REF
V
REF
(V)
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
ADC INL (ppm of FS)
Buffer OFF
AV
DD
=3V
AV
DD
=5V
INL ERROR vs PGA
PGA Setting
INL (ppm of FS)
1421681286432
100
90
80
70
60
50
40
30
20
10
0
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
MAXIMUM ANALOG SUPPLY CURRENT
Analog Supply Voltage (V)
2.5 3.0 3.5 4.0 4.5 5.0 5.5
Analog Supply Current (mA)
PGA = 128
ADC ON
Brownout Detect ON
−
40
_
C
+25
_
C
+85
_
C
900
800
700
600
500
400
300
200
100
0
ADC CURRENT vs PGA
PGA Setting
01 824 3216 12864
I
ADC
(A)
AV
DD
= 5V, Buffer = ON
AV
DD
= 3V, Buffer = ON
Buffer = OFF
Buffer = OFF
µ