AD7143 Analog Devices, AD7143 Datasheet - Page 9
AD7143
Manufacturer Part Number
AD7143
Description
Programmable Controller for Capacitance Touch Sensors
Manufacturer
Analog Devices
Datasheet
1.AD7143.pdf
(56 pages)
Specifications of AD7143
Resolution (bits)
16bit
# Chan
8
Sample Rate
n/a
Interface
I²C/Ser 2-Wire,Ser
Analog Input Type
n/a
Ain Range
± 2 pF (Delta C)
Adc Architecture
Sigma-Delta
Pkg Type
CSP
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Company
Part Number
Manufacturer
Quantity
Price
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Part Number:
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Manufacturer:
ADI
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3
Part Number:
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Company:
Part Number:
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Manufacturer:
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Manufacturer:
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12
10
4.8
4.3
3.8
3.3
2.8
2.3
1.8
1.3
960
940
920
900
880
860
840
820
800
780
8
6
4
2
0
–40
–40
Figure 11. Shutdown Supply Current vs. Temperature
0
Figure 10. Supply Current vs. Temperature
–20
–20
10k
0
Figure 12. 3.3 V Linearity
0
20k
TEMPERATURE (°C)
CDC OUTPUT CODE
CDC OUTPUT CODE
20
TEMPERATURE (°C)
20
30k
40
40
40k
60
60
3.3V
3.6V
3.3V
2.7V
3.6V
80
50k
80
2.7V
100
100
60k
120
120
Rev. 0 | Page 9 of 56
–0.005
–0.010
0.020
0.015
0.010
0.005
180
160
140
120
100
2.5
2.0
1.5
1.0
0.5
80
60
40
20
0
0
0
100
10
0
Figure 15. Power Supply Square Wave Rejection
Figure 14. Power Supply Sine Wave Rejection
10k
Figure 13. 3.3 V Linearity Error
1k
SQUARE WAVE FREQUENCY (Hz)
20k
CDC OUTPUT CODE
1k
CDC OUTPUT CODE
FREQUENCY (Hz)
10k
100mV
200mV
30k
40k
100k
100k
50k
300mV
400mV
500mV
1M
60k
200mV
AD7143
300mV
100mV
50mV
25mV
10M
10M
70k