TYPICAL CHARACTERISTICS
(Cont.)
At T
A
= +25°C, +V
CC
= +2.7V, V
REF
= External +2.5V, f
SAMPLE
= 125kHz, and f
CLK
= 16 • f
SAMPLE
= 2MHz, unless otherwise noted.
REFERENCE CURRENT vs SAMPLE RATE
14
12
18
16
REFERENCE CURRENT vs TEMPERATURE
Reference Current (µA)
10
8
6
4
2
0
0
25
50
75
100
125
Sample Rate (kHz)
Reference Current (µA)
14
12
10
8
6
–40
–20
0
20
40
60
80
100
Temperature (°C)
SWITCH-ON RESISTANCE vs +V
CC
(X+, Y+: +V
CC
to Pin; X–, Y–: Pin to GND)
8
7
6
Y–
R
ON
(Ω)
R
ON
(Ω)
SWITCH-ON RESISTANCE vs TEMPERATURE
(X+, Y+: +V
CC
to Pin; X–, Y–: Pin to GND)
8
7
X–
6
5
X+
4
3
2
1
Y+
Y–
5
4
Y+
3
2
1
2.0
2.5
3.0
3.5
+V
CC
(V)
4.0
4.5
X–
X+
5.0
–40
–20
0
20
40
60
80
100
Temperature (°C)
MAXIMUM SAMPLING RATE vs R
IN
2.0
1.8
1.6
1.4
Error (LSB)
2.4920
INTERNAL V
REF
vs TEMPERATURE
2.4915
2.4910
Internal V
REF
(V)
INL: R = 2k
INL: R = 500
DNL: R = 2k
DNL: R = 500
2.4905
2.4900
2.4895
2.4890
2.4885
2.4880
2.4875
1.2
1.0
0.8
0.6
0.4
0.2
0
20
40
60
80
100 120 140
Sampling Rate (kHz)
160
180
200
6
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–40
–35
–30
–25
–20
–15
–10
–05
0
05
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
Temperature (°C)
ADS7846
SBAS125H
BURR-BROWN [ BURR-BROWN CORPORATION ]
