TYPICAL CHARACTERISTICS
(Cont.)
At T
A
= +25°C, +V
CC
= +2.7V, V
REF
= +2.5V, f
SAMPLE
= 125kHz, and f
CLK
= 16 • f
SAMPLE
= 2MHz, unless otherwise noted.
REFERENCE CURRENT vs SAMPLE RATE
14
12
Reference Current (µA)
18
16
REFERENCE CURRENT vs TEMPERATURE
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
R
ON
(Ω)
8
SWITCH-ON RESISTANCE vs TEMPERATURE
(X+, Y+: +V
CC
to Pin; X–, Y–: Pin to GND)
Y–
Y–
X–
R
ON
(Ω)
7
X–
6
5
Y+
4
3
X+
5
4
Y+
3
X+
2
1
2
2.5
3
3.5
+V
CC
(V)
4
4.5
5
2
1
–40
–20
0
20
40
60
80
100
Temperature (°C)
MAXIMUM SAMPLING RATE vs R
IN
2
1.8
1.6
1.4
LSB Error
INL: R = 2k
INL: R = 500
DNL: R = 2k
DNL: R = 500
1.2
1
0.8
0.6
0.4
0.2
0
20
40
60
80
100 120 140
Sampling Rate (kHz)
160
180
200
ADS7843
SBAS090B
5
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