AD7747 데이터 시트보기 (PDF) - Analog Devices

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AD7747

24-Bit Capacitance-to-Digital Converter with Temperature Sensor

Analog Devices 

AD7747

CAP OFFSET CALIBRATION REGISTER

16 Bits, Address Pointer 0x0D, 0x0E,

Default Value 0x8000

The capacitive offset calibration register holds the capacitive

channel zero-scale calibration coefficient. The coefficient is

used to digitally remove the capacitive channel offset. The

register value is updated automatically following the execution

of a capacitance offset calibration. The capacitive offset calibra-

tion resolution (cap offset register LSB) is less than 32 aF; the

full range is ±1 pF.

CAP GAIN CALIBRATION REGISTER

16 Bits, Address Pointer 0x0F, 0x10,

Default Value 0xXXXX

Capacitive gain calibration register. The register holds the

capacitive channel full-scale factory calibration coefficient.

VOLT GAIN CALIBRATION REGISTER

16 Bits, Address Pointer 0x11,0x12,

Default Value 0xXXXX

Voltage gain calibration register. The register holds the voltage

channel full-scale factory calibration coefficient.

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