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Data Sheet
AD7877
Rev. D | Page 9 of 44
TYPICAL PERFORMANCE CHARACTERISTICS
TA = 25°C, VCC = 2.7 V, VREF = 2.5 V, fSAMPLE = 125 kHz, fDCLK = 16 × fSAMPLE = 2 MHz, unless otherwise noted.
800
700
600
500
–50
–30
–10
0
30
50
70
90
03796-030
TEMPERATURE (
°C)
CURRENT
(
A)
ADC AND REF
ADC, REF, AND DAC
Figure 6. Supply Current vs. Temperature
1000
400
500
600
700
800
900
2.0
2.3
2.6
2.9
3.2
3.5
3.8
4.1
4.4
4.7
5.0
03796-031
VCC (V)
CURRENT
(
A)
ADC AND REF
ADC, REF, AND DAC
Figure 7. Supply Current vs. VCC
0.6
–0.6
–0.5
–0.4
–0.3
–0.2
–0.1
0
0.1
0.2
0.3
0.4
0.5
–50
–30
–10
10
30
50
70
90
03796-039
TEMPERATURE (
°C)
DELTA
FROM
25
°C
(LSB)
Figure 8. Change in ADC Gain vs. Temperature
200
80
100
120
140
160
180
–50
–30
–10
10
30
50
70
90
03796-032
TEMPERATURE (
°C)
CURRENT
(nA)
Figure 9. Full Power-Down IDD vs. Temperature
0.6
–0.6
–0.5
–0.4
–0.3
–0.2
–0.1
0
0.1
0.2
0.3
0.4
0.5
–50
–30
–10
10
30
50
70
90
03796-040
TEMPERATURE (
°C)
DELTA
FROM
25
°C
(LSB)
Figure 10. Change in ADC Offset vs. Temperature
1.0
–1.0
–0.8
–0.6
–0.4
–0.2
0
0.2
0.4
0.6
0.8
0
500
1000
1500
2000
2500
3000
3500
4000
03796-044
CODE
INL
(LSB)
Figure 11. ACD INL Plot