COMBOSOLAR datasheet(42/57 Pages) TI1

42 / 57 page

SPI

LPF

Line Coupling Interface

C2000 MCU

AFE031

DAC

PGA

Line Coupling Interface

C2000 MCU

SPI

LPF

AFE031

LPF

SPI

DAC

PGA

AFE031

SBOS531D – AUGUST 2010 – REVISED MAY 2012

www.ti.com

CALIBRATION MODES

The AFE031 can be configured for three different calibration modes: Tx Calibration, Rx Calibration, and Tx PGA

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.

Tx Calibration Mode

The Tx PGA + Tx Filter ac gain can be calibrated in Tx Calibration Mode. Figure 46 shows the signal path during

Tx Calibration mode.

Figure 46. Tx Calibration Mode Configuration

Rx Calibration Mode

The Tx PGA + Rx PGA1 + Rx Filter + Rx PGA2 ac gain can be calibrated in Rx Calibration mode. Figure 47

shows the signal path during Rx Calibration mode.

Figure 47. Rx Calibration Mode Configuration

Product Folder Link(s): AFE031

COMBOSOLAR Datasheet(PDF) 42 Page - Texas Instruments