ADS1216 datasheet(21/28 Pages) TI

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ADS1216

SBAS171B

SELFCAL

Offset and Gain Self Calibration

Description: Starts the process of self calibration. The Offset

Control Register (OCR) and the Full-Scale Register (FSR) are

updated with new values after this operation.

Operands:

None

Bytes:

Encoding:

1111 0000

Data Transfer Sequence:

SELFOCAL Offset Self Calibration

Description: Starts the process of self-calibration for offset.

The Offset Control Register (OCR) is updated after this

operation.

Operands:

None

Bytes:

Encoding:

1111 0001

Data Transfer Sequence:

SELFGCAL Gain Self Calibration

Description: Starts the process of self-calibration for gain.

The Full-Scale Register (FSR) is updated with new values

after this operation.

Operands:

None

Bytes:

Encoding:

1111 0010

Data Transfer Sequence:

SYSOCAL

System Offset Calibration

Description: Starts the system offset calibration process. For

a system offset calibration the input should be set to 0V

differential, and the ADS1216 computes the OCR register

value that will compensate for offset errors. The Offset

Control Register (OCR) is updated after this operation.

Operands:

None

Bytes:

Encoding:

1111 0011

Data Transfer Sequence:

SYSGCAL

System Gain Calibration

Description: Starts the system gain calibration process. For a

system gain calibration, the differential input should be set to

the reference voltage and the ADS1216 computes the FSR

updated after this operation.

Operands:

None

Bytes:

Encoding:

1111 0100

Data Transfer Sequence:

1111 0000

OUT

xxxx xxxx

1111 0001

OUT

xxxx xxxx

1111 0010

OUT

xxxx xxxx

1111 0011

OUT

xxxx xxxx

1111 0100

OUT

xxxx xxxx

CSARAM

Calculate Checksum for all

RAM Banks

Description: Calculate the checksum of all RAM Banks. The

checksum is calculated as a sum of all the bytes with the carry

ignored. All bits are included in the checksum calculation,

there is no masking of bits.

Operands:

None

Bytes:

Encoding:

1110 1000

Data Transfer Sequence:

1110 1000

OUT

xxxx xxxx

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