Datasheet

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Temperature (

C)
1.0
0.5
0.0
−
0.5
−
1.0
THD and SFDR Delta from +25

C (dB)
−
20
−
40 0 20 40 60 80
THD
SFDR
Temperature (

C)
Change in Positive Gain Match (LSB)
1.80
1.70
1.60
1.50
1.40
1.30
1.20
−
20
−
40 0 20 40 60 80
Temperature (

C)
Change in Negative Gain Match (LSB)
1.50
1.40
1.30
1.20
1.10
1.00
−
20
−
40 0 20 40 60 80
Temperature (

C)
Reference (V)
2.510
2.506
2.502
2.498
2.494
2.490
−
20
−
40 0 20 40 60 80
Temperature (

C)
Bipolar Zero (LSB)
CH1
CH0
1.2
1.0
0.8
0.6
0.4
−
20
−
40 0 20 40 60 80
Temperature (

C)
Bipolar Match (LSB)
1.30
1.20
1.10
1.00
0.90
−
20
−
40 0 20 40 60 80
ADS7864
SBAS141A – SEPTEMBER 2000 – REVISED MARCH 2005
TYPICAL CHARACTERISTICS (continued)
All specifications T
A
= +25°C, +V
A
= +V
D
= +5V, V
REF
= internal +2.5V and f
CLK
= 8MHz, f
SAMPLE
= 500kHz (unless otherwise
noted)
CHANGE IN SPURIOUS FREE DYNAMIC RANGE
AND TOTAL HARMONIC DISTORTION POSITIVE GAIN MATCH vs TEMPERATURE
vs TEMPERATURE (Maximum Deviation for All Six Channels)
Figure 5. Figure 6.
NEGATIVE GAIN MATCH vs TEMPERATURE
(Maximum Deviation for All Six Channels) REFERENCE VOLTAGE vs TEMPERATURE
Figure 7. Figure 8.
BIPOLAR ZERO vs TEMPERATURE BIPOLAR ZERO MATCH vs TEMPERATURE
Figure 9. Figure 10.
8