AFE031 datasheet(40/59 Pages) TI2

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SPI

LPF

Line Coupling Interface

C2000 MCU

AFE031

DAC

PGA

Line Coupling Interface

C2000 MCU

SPI

LPF

AFE031

LPF

SPI

DAC

PGA

AFE031

SBOS531E – AUGUST 2010 – REVISED JUNE 2019

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9.5 Calibration Modes

The AFE031 can be configured for two different calibration modes: Tx calibration and Rx calibration. Calibration

values can be determined during the calibration process and stored in system memory. A one-time calibration

can be performed the first time that the system powers on; this calibration remains valid over the full temperature

range and operating life of the AFE031, independent of the number of power-on/power-off cycles, as long as the

calibration factors remain in the system memory. Calibration mode is accessed through the Control1 Register.

Note that calibration is not required.

9.5.1 Tx Calibration Mode

The Tx PGA + Tx Filter ac gain can be calibrated in Tx calibration mode. Figure 45 shows the signal path during

Tx calibration mode.

Figure 45. Tx Calibration Mode Configuration

9.5.2 Rx Calibration Mode

The Tx PGA + Rx PGA1 + Rx Filter + Rx PGA2 ac gain can be calibrated in Rx Calibration mode. Figure 46

shows the signal path during Rx Calibration mode.

Figure 46. Rx Calibration Mode Configuration

AFE031 데이터시트(PDF) 40 Page - Texas Instruments