AD7156 데이터 시트보기 (PDF) - Analog Devices
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AD7156 Datasheet PDF : 28 Pages
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2
0
3.3V
–2
1.8V
–4
–6
–8
–10
1
10
100
1k
RESISTANCE CIN TO GND (MΩ)
Figure 10. Capacitance Input Gain Error vs. Resistance CIN to GND,
VDD = 1.8 V and 3.3 V, CIN to EXC = 3 pF
2
0
3.3V
–2
1.8V
–4
–6
–8
–10
1
10
100
1k
RESISTANCE CIN TO GND (MΩ)
Figure 11. Capacitance Input Gain Error vs. Resistance CIN to GND,
VDD = 1.8 V and 3.3 V, CIN to EXC = 9 pF
0.2
0
1.8V
–0.2
3.3V
–0.4
–0.6
–0.8
–1.0
0.1
1
10
100
1k
RESISTANCE EXC TO GROUND (MΩ)
Figure 12. Capacitance Input Gain Error vs. Resistance EXC to GND,
VDD = 1.8 V and 3.3 V, CIN to EXC = 3 pF
AD7156
0.2
0
3.3V
–0.2
1.8V
–0.4
–0.6
–0.8
–1.0
0.1
1
10
100
1k
RESISTANCE EXC TO GROUND (MΩ)
Figure 13. Capacitance Input Gain Error vs. Resistance EXC to GND,
VDD = 1.8 V and 3.3 V, CIN to EXC = 9 pF
1
0
3.3V
–1
–2
1.8V
–3
–4
–5
–6
–7
0
20
40
60
80
100
SERIAL RESISTANCE (kΩ)
Figure 14. Capacitance Input Gain Error vs. Serial Resistance,
VDD = 1.8 V and 3.3 V, CIN to EXC = 3 pF
10
0 1.8V
–10
3.3V
–20
–30
–40
–50
1
10
100
1k
PARELLEL RESISTANCE (MΩ)
Figure 15. Capacitance Input Gain Error vs. Parallel Resistance,
VDD = 1.8 V and 3.3 V, CIN to EXC = 3 pF
Rev. 0 | Page 9 of 28
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