AFE031 datasheet(46/59 Pages) TI2

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AFE031

SBOS531E – AUGUST 2010 – REVISED JUNE 2019

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Table 19. Block Descriptions

BLOCK

DESCRIPTION

The PA block includes the power amplifier and associated pedestal biasing circuitry

The Tx block includes the Tx_Filter and the Tx_PGA

The Rx block includes the Rx PGA1, the Rx Filter, and the Rx PGA2

ERx

The ER block includes the two-wire receiver

ETx

The ER block includes the two-wire transmitter

DAC

The DAC block includes a digital-to-analog converter

The ZC block includes both zero crossing detectors

REF1

The REF1 block includes the internal bias generator for the PA block

REF2

The REF2 block includes the internal bias generators for the Tx, Rx, ERx, and ETx

blocks

10.2 Typical Application

Figure 48 shows the AFE031 configured in a typical PLC analog front-end application. The schematic shows the

connections to the microprocessor and ac line. The values of the passive components in Figure 48 are suitable

for a single-phase powerline communications application in the CENELEC A band, connected to a 120-VAC or

240-VAC, 50-Hz or 60-Hz ac line.

AFE031 Datasheet(PDF) 46 Page - Texas Instruments