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ATPL230A Datasheet(PDF) 7 Page - ATMEL Corporation

Part # ATPL230A
Description  ATPL Series Power Line Communications Device
PDF  122 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATPL230A Datasheet(HTML) 7 Page - ATMEL Corporation

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ATPL230A [DATASHEET]
Atmel-43053J-ATPL230A-Datasheet_22-Sep-16
5.
Analog Front-End
5.1
PLC coupling circuitry description
Atmel PLC coupling reference designs have been designed to achieve high performance, low cost and simplicity.
With these values on mind, Atmel has developed a set of PLC couplings covering frequencies up to 472 kHz
compliant with different applicable regulations.
Atmel PLC technology is purely digital and does not require external DAC/ADC, thus simplifying the external required
circuitry. Generally Atmel PLC coupling reference designs make use of few passive components plus a Class D
amplification stage for transmission.
All PLC coupling reference designs are generally composed by the same sub-circuits:
Transmission Stage
Reception Stage
Filtering Stage
Coupling Stage
Figure 5-1.
PLC coupling block diagram
A particular reference design can contain more than one sub-circuit of the same kind (i.e.: two transmission stages).
5.1.1
Transmission Stage
The transmission stage adapts the EMIT signals and amplifies them if required. It can be composed by:
Driver: A group of resistors which adapt the EMIT signals to either control the Class-D amplifier or to be filtered
by the next stage.
Amplifier: If required, a Class-D amplifier which generates a square waveform from 0 to VDD is included.
Bias and protection: A couple of resistors and a couple of Schottky barrier diodes provide a DC component and
provide protection from received disturbances.
Transmission stage shall be always followed by a filtering stage.
AGC1
AGC0
AGC5
AGC4
AGC3
AGC2
VIPA
VRC
VIMA
EMIT0
EMIT5
EMIT4
EMIT3
EMIT2
EMIT1
TXRX0
TO MAINS
RECEPTION
STAGE
TRANSMISSION
STAGE
COUPLING STAGE
ATPL230A
VDD
FILTERING STAGE



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