TYPICAL PERFORMANCE CURVES
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.
SUPPLY CURRENT vs TEMPERATURE
400
350
Supply Current (µA)
POWER-DOWN SUPPLY CURRENT
vs TEMPERATURE
140
120
Supply Current (nA)
300
250
200
150
100
–40
–20
0
20
40
60
80
100
Temperature (°C)
100
80
60
40
20
–40
–20
0
20
40
60
80
100
Temperature (°C)
SUPPLY CURRENT vs +V
CC
400
350
MAXIMUM SAMPLE RATE vs +V
CC
1M
8-Bit Mode
Supply Current (µA)
Sample Rate (Hz)
300
250
200
150
100
50
1.5
f
CLOCK
= 200kHz
V
REF
= +V
CC
100k
12-Bit Mode
10k
V
REF
= +V
CC
1k
2
2.5
3
3.5
4
4.5
5
1.5
2
2.5
3
3.5
4
4.5
5
+V
CC
(V)
+V
CC
(V)
CHANGE IN GAIN vs TEMPERATURE
0.15
0.10
CHANGE IN OFFSET vs TEMPERATURE
0.6
0.4
Delta from +25°C (LSB)
Delta from +25°C (LSB)
0.05
0.00
–0.05
–0.10
–0.15
–40
–20
0
20
40
60
80
100
Temperature (°C)
0.2
0.0
–0.2
–0.4
–0.6
–40
–20
0
20
40
60
80
100
Temperature (°C)
®
ADS7845
4
BURR-BROWN [ BURR-BROWN CORPORATION ]
