TYPICAL PERFORMANCE CURVES (CONT)
At TA = +25°C, +VCC = +2.7V, VREF = +2.5V, fSAMPLE = 125kHz, and fCLK = 16 • fSAMPLE = 2MHz, unless otherwise noted.
REFERENCE CURRENT vs SAMPLE RATE
REFERENCE CURRENT vs TEMPERATURE
14
12
10
8
18
16
14
12
10
8
6
4
2
0
6
0
25
50
75
100
125
–40
–20
0
20
40
60
80
100
Sample Rate (kHz)
Temperature (˚C)
SWITCH ON RESISTANCE vs +VCC
(X+, Y+: +VCC to Pin; X–, Y–: Pin to GND)
SWITCH ON RESISTANCE vs TEMPERATURE
(X+, Y+: +VCC to Pin; X–, Y–: Pin to GND)
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
X–
X+
Y–
Y–
X–
Y+
Y+
X+
2
2.5
3
3.5
4
4.5
5
–40
–20
0
20
40
60
80
100
+VCC (V)
Temperature (˚C)
MAXIMUM SAMPLING RATE vs RIN
2
1.8
1.6
1.4
1.2
1
INL: R = 2k
INL: R = 500
DNL: R = 2k
DNL: R = 500
0.8
0.6
0.4
0.2
0
20
40
60
80
100 120 140 160 180 200
Sampling Rate (kHz)
®
5
ADS7843
BB [ BURR-BROWN CORPORATION ]
