参数资料
型号: EVAL-AD7747EBZ
厂商: Analog Devices Inc
文件页数: 28/28页
文件大小: 0K
描述: BOARD EVAL FOR AD7747
标准包装: 1
传感器类型: 触摸,电容式
接口: I²C
电源电压: 2.7 V ~ 5.25 V
嵌入式:
已供物品: 板,缆线,CD
已用 IC / 零件: AD7747
产品目录页面: 781 (CN2011-ZH PDF)
相关产品: AD7747ARUZ-REEL7-ND - IC CONV CAP TO DIG 24BIT 16TSSOP
AD7747ARUZ-REEL-ND - IC CONV CAP TO DIG 24BIT 16TSSOP
AD7747ARUZ-ND - IC CONV 24BIT CAP-DGTL 16-TSSOP
AD7747
Rev. 0 | Page 9 of 28
150
–150
01k
0
546
9-
0
10
PARALLEL RESISTANCE (M)
CAP
E
RRO
R
(
fF
)
10
100
50
0
–50
–100
Figure 10. Capacitance Input Error vs. Parallel Resistance;
CIN(+) to GND = 8 pF, VDD = 5 V
0
–1000
0
200
0
546
9-
0
58
CIN TO SHLD RESISTANCE (k)
CAP
E
RRO
R
(
fF
)
–100
–200
–300
–400
–500
–600
–700
–800
–900
25
50
75
100
125
150
175
Figure 11. Capacitance Input Error vs. Resistance Between CIN1(+) and SHLD;
CIN(+) to GND = 8 pF, VDD= 5 V
100
–1000
0.091
0
546
9-
0
59
CIN TO SHLD RESISTANCE (M)
CAP
E
RRO
R
(
fF
)
–100
0
–200
–300
–400
–500
–600
–700
–800
–900
0.27
0.48
0.96
5
25
100
Figure 12. Capacitance Input Error vs. Resistance Between CIN(+) and SHLD;
CIN(+) to GND = 25 pF, VDD = 5 V
1.0
–1.0
0.01
100
05
46
9-
0
66
SHLD TO GND RESISTANCE (M)
CA
P
E
R
RO
R
(p
F
)
0.1
1.0
10.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
Figure 13. Capacitance Input Error vs. Resistance Between SHLD and GND;
CIN(+) to GND = 8 pF; VDD = 5 V
10
–100
1
100
05
46
9-
0
67
SERIAL RESISTANCE (k)
C
A
P
E
R
RO
R
(
fF
)
10
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
25 pF
8 pF
Figure 14. Capacitance Input Error vs. Serial Resistance;
CIN(+) to GND = 8 pF and 25pF, VDD = 5 V
0.2
–0.6
2.5
5.5
0
546
9-
0
62
VDD (V)
CAP
E
RRO
R
(
fF
)
0
–0.2
–0.4
3.0
3.5
4.0
4.5
5.0
Figure 15. Capacitance Input Power Supply Rejection (PSR);
CIN(+) to GND = 8 pF
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