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 TEMPERATURE
REFERENCE CURRENT vs SAMPLE RATE
18
16
14
12
10
8
14
12
10
8
6
4
2
6
0
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)
16
14
12
10
8
16
14
12
10
8
LR
LL
LL
LR
UR
UL
6
6
UR
UL
4
4
2
2
2
2.5
3
3.5
+VCC (V)
4
4.5
5
–40
–20
0
20
40
60
80
100
Temperature (°C)
MAXIMUM SAMPLING RATE vs RIN
2
1.8
1.6
1.4
1.2
1
INL: R = 2kΩ
INL: R = 500Ω
DNL: R = 2kΩ
DNL: R = 500Ω
0.8
0.6
0.4
0.2
0
20
40
60
80
100 120 140 160 180 200
Sampling Rate (kHz)
®
ADS7845
5
BB [ BURR-BROWN CORPORATION ]
