Datasheet

REV. 0
–24–
AD7708/AD7718
Table XI. Registers—Quick Reference Guide (continued)
Power-On/Reset
Register Name Type Size Default Value Function
AD7718
Offset Register Read/Write 24 Bits 800 000 Hex Contains a 24-bit word which is the offset calibration
coefficient for the part. The contents of this register
are used to provide offset correction on the output
from the digital filter. There are five Offset Registers
on the part and these are associated with input chan-
nels as outlined in the ADCCON register.
AD7718
Gain Register Read/Write 24 Bits 5XXXX5 Hex Contains a 24-bit word which is the gain calibration
coefficient for the part. The contents of this register
are used to provide gain correction on the output
from the digital filter. There are five Gain Registers
on the part and these are associated with input chan-
nels as outlined in the ADCCON register.
AD7708
Offset Register Read/Write 16 Bits 8000 Hex Contains a 16-bit word which is the offset calibration
coefficient for the part. The contents of this register
are used to provide offset correction on the output
from the digital filter. There are five Offset Registers
on the part and these are associated with input chan-
nels as outlined in the ADCCON register.
AD7708
Gain Register Read/Write 16 Bits 5XXX Hex Contains a 16-bit word which is the gain calibration
coefficient for the part. The contents of this register
are used to provide gain correction on the output
from the digital filter. There are five Gain Registers
on the part and these are associated with input chan-
nels as outlined in the ADCCON register.
AD7708
ID Register Read 8 Bits 5X Hex Contains an 8-bit byte which is the identifier for
the part.
AD7718
ID Register Read 8 Bits 4X Hex Contains an 8-bit byte which is the identifier for
the part.
Test Registers Read/Write 16 Bits 0000 Hex Controls the test modes of the part that are used
when testing the part. The user is advised not to
change the contents of these registers.