AMC7823 Datasheet, PDF (13/48 Pages) Texas Instruments – ANALOG MONITORING AND CONTROL CIRCUIT

AMC7823
www.ti.com
SLAS453A – APRIL 2005 – REVISED OCTOBER 2005
TYPICAL CHARACTERISTICS: ANALOG-TO-DIGITAL CONVERTER (ADC) (continued)
At +25°C, AV_DD = DV_DD = 5V, unless otherwise noted.
OFFSET ERROR AND OFFSET ERROR MATCH
vs TEMPERATURE
1.0
0.8
AV_DD = 5V
V_REF = 2.5V
0.6
0.4
Offset Error
0.2
0.0
Offset Error Match
−0.2
−0.4
−0.6
−0.8
−1.0
−60 −40 −20 0
20 40 60 80 100
Temperature (_ C)
Figure 9.
GAIN ERROR AND GAIN ERROR MATCH
vs TEMPERATURE
4.0
AV_DD = 5V
3.0 V_REF = 2.5V
2.0
Gain Error
1.0
Gain Error Match
0
−1.0
−2.0
−3.0
−4.0
−60 −40 −20 0
20 40 60 80 100
Temperature (_ C)
Figure 10.
OFFSET ERROR AND OFFSET ERROR MATCH
vs TEMPERATURE
1.0
0.8
AV_DD = 2.7V
V_REF = 1.25V
0.6
0.4
0.2
Offset Error
Offset Error Match
0
−0.2
−0.4
−0.6
−0.8
−1.0
−50
−25
0
25
50
75
100
Temperature (_ C)
Figure 11.
GAIN ERROR AND GAIN ERROR MATCH
vs TEMPERATURE
4.0
AV_DD = 2.7V
3.0 V_REF = 1.25V
2.0
Gain Error
1.0
0
Gain Error Match
−1.0
−2.0
−3.0
−4.0
−50
−25
0
25
50
Temperature (_C)
75
100
Figure 12.
GAIN AND OFFSET ERROR
vs 5V SUPPLY
4.0
V_REF = 2.5V
3.0
2.0
1.0
0
−1.0
Offset
Gain
−2.0
−3.0
−4.0
4.5
4.75
5.0
5.25
5.5
5V Supply Voltage (V)
Figure 13.
GAIN AND OFFSET ERROR MATCH
vs 5V SUPPLY
1.0
V_REF = 2.5V
0.8
0.6
0.4
Gain Match
0.2
Offset Match
0
4.5
4.75
5.0
5.25
5.5
5V Supply Voltage (V)
Figure 14.
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