ADS7826 Datasheet, PDF (10/20 Pages) Texas Instruments – 10/8/12-BIT HIGH SPEED 2.7 V microPOWER SAMPLING ANALOG-TO-DIGITAL CONVERTER

ADS7826
ADS7827
ADS7829
SLAS388 – JUNE 2003
TYPICAL CHARACTERISTICS (continued)
At T_A = 25°C, V_CC = 2.7 V, V_ref = 25 V, (unless otherwise specified)
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CHANGE IN GAIN
vs
SUPPLY VOLTAGE
1.2
V_ref = 2.5 V
1
ADS7829
0.8
0.6
0.4
ADS7826
0.2
ADS7827
0
2.7 3.2
3.7 4.2
4.7
5.2
V_CC − Supply Voltage − V
Figure 19.
REFERENCE CURRENT
vs
SAMPLE RATE
30
25
20
15
10
5
0
0 25 50 75 100 125 150 175 200 225 250
Sample Rate − kHz
Figure 21.
ADS7829
CHANGE IN GAIN ERROR
vs
REFERENCE VOLTAGE
2.5
V_CC = 5 V
2
1.5
1
0.5
0
- 0.5
-1
- 1.5
0
2
3
4
5
Reference Voltage - V
Figure 23.
CHANGE IN QUIESCENT CURRENT
vs
SUPPLY VOLTAGE
200
180 ^{Vref = 2.5 V}
ADS7827
160
ADS7826
140
120
100
ADS7829
80
60
40
20
0
2.7
3.2
3.7
4.2
4.7
5.2
V_CC − Supply Voltage − V
Figure 20.
ADS7829
CHANGE IN OFFSET ERROR
vs
REFERENCE VOLTAGE
1.2
1 ^{VCC = 5 V}
0.8
0.6
0.4
0.2
0
- 0.2
- 0.4
- 0.6
- 0.8
1
2
3
4
5
Reference Voltage - V
Figure 22.
ADS7829
PEAK-TO-PEAK NOISE
vs
REFERENCE VOLTAGE
10
9
V_CC = 5 V
8
7
6
5
4
3
2
1
0
0.1
1
10
Reference Voltage - V
Figure 24.
10