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AD7142 bảng dữ liệu(PDF) 9 Page - Analog Devices

tên linh kiện AD7142
Giải thích chi tiết về linh kiện  Programmable Capacitance-to-Digital Converter with Environmental Compensation
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AD7142 bảng dữ liệu(HTML) 9 Page - Analog Devices

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AD7142
Rev. 0 | Page 9 of 68
TYPICAL PERFORMANCE CHARACTERISTICS
VCC (V)
820
860
840
920
900
880
940
960
980
1000
2.7
2.9
2.8
3.0
3.1
3.2
3.3
3.4
3.5
3.6
DEVICE 3
DEVICE 1
DEVICE 2
Figure 6. Supply Current vs. Supply Voltage
(VCC = AVCC + DVCC, ICC = AICC + DICC)
2.7
2.8
2.9
3.0
3.1
3.2
3.4
3.3
3.5
3.6
VCC (V)
40
60
100
80
120
140
160
180
LP_CONV_DELAY = 200ms
LP_CONV_DELAY = 400ms
LP_CONV_DELAY = 600ms
LP_CONV_DELAY = 800ms
Figure 7. Low Power Supply Current vs. Supply Voltage,
Decimation Rate = 256 (VCC = AVCC + DVCC, ICC = AICC + DICC)
2.7
2.8
2.9
3.0
3.10
3.2
3.4
3.3
3.5
3.6
VCC (V)
20
40
60
80
100
120
LP_CONV_DELAY = 200ms
LP_CONV_DELAY = 600ms
LP_CONV_DELAY = 800ms
LP_CONV_DELAY = 400ms
Figure 8. Low Power Supply Current vs. Supply Voltage
Decimation Rate = 128 (VCC = AVCC + DVCC, ICC = AICC + DICC)
1.40
1.55
1.70
1.85
2.00
2.15
2.30
2.45
2.7
2.9
2.8
3.0
3.1
3.2
3.3
3.4
3.5
3.6
VCC (V)
DEVICE 2
DEVICE 3
DEVICE 1
Figure 9. Shutdown Supply Current vs. Supply Voltage
(VCC = AVCC + DVCC, ICC = AICC + DICC)
1.10
1.05
1.00
0.95
0.90
0.85
0.80
0
50
100
150
200
250
300
350
400
450
500
CAPACITANCE LOAD ON SOURCE (pF)
DEVICE 3
DEVICE 2
DEVICE 1
Figure 10. Supply Current vs. Capacitive Load on SRC (ICC = AICC + DICC)
16015
16010
16005
16000
15995
15990
15985
15980
0
50
100
150
200
250
300
350
400
450
500
CAPACITANCE LOAD ON SOURCE (pF)
DEVICE 3
DEVICE 2
DEVICE 1
Figure 11. Output Code vs. Capacitive Load on SRC


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