AD7747_17 datasheet(21/29 Pages) AD

Il numero della parte	AD7747

Spiegazioni elettronici	24-Bit Capacitance-to-Digital Converter

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Produttore elettronici	AD [Analog Devices]

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AD7747

Rev. 0 | Page 20 of 28

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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