AD7747 datasheet(10/29 Pages) AD

Nome de Peças	AD7747

Descrição Electrónicos	24-Bit Capacitance-to-Digital Converter

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Fabricante Electrônico	AD [Analog Devices]

Página de início	http://www.analog.com

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10 / 29 page

AD7747

Rev. 0 | Page 9 of 28

150

–150

01k

PARALLEL RESISTANCE (MΩ)

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

CIN TO SHLD RESISTANCE (kΩ)

–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

CIN TO SHLD RESISTANCE (MΩ)

–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

SHLD TO GND RESISTANCE (MΩ)

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

SERIAL RESISTANCE (kΩ)

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

VDD (V)

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

Nº de peça semelhante - AD7747

Fabricante Electrônico	Nome de Peças	Folha de dados	Descrição Electrónicos
Analog Devices	AD7747	205Kb / 20P	24-Bit Capacitance-to-Digital Converter with Temperature Sensor Rev. PrC, 28. July 2006
Analog Devices	AD7747ARUZ	428Kb / 28P	24-Bit Capacitance-to-Digital Converter with Temperature Sensor REV. 0

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Descrição semelhante - AD7747

Fabricante Electrônico	Nome de Peças	Folha de dados	Descrição Electrónicos
Analog Devices	AD7745	780Kb / 28P	24-Bit Capacitance-to-Digital Converter with Temperature Sensor REV. 0
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	AD7746	780Kb / 28P	24-Bit Capacitance-to-Digital Converter with Temperature Sensor REV. 0
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