AFE031_13 Datasheet, PDF (1/57 Pages) Texas Instruments – Powerline Communications Analog Front-End

AFE031
www.ti.com
SBOS531D – AUGUST 2010 – REVISED MAY 2012
Powerline Communications
Analog Front-End
Check for Samples: AFE031
FEATURES
1
•234 Integrated Powerline Driver with Thermal and
Overcurrent Protection
• Conforms to EN50065-1
• PRIME Certified
• Large Output Swing: 12 V_PP at 1.5 A
(15-V Supply)
• Low Power Consumption:
15 mW (Receive Mode)
• Programmable Tx and Rx Filters
• Supports EN50065 CENELEC Bands A, B, C, D
• Supports FSK, S-FSK, and OFDM
• Supports PRIME, G3, IEC 61334
• Receive Sensitivity: 20 μV_RMS, Typical
• Programmable Tx and Rx Gain Control
• Four-Wire Serial Peripheral Interface
• Two Integrated Zero Crossing Detectors
• Two-Wire Transceiver Buffer
• 48-Pin QFN PowerPAD™ Package
• Extended Junction Temperature Range:
–40°C to +125°C
APPLICATIONS
• eMetering
• Lighting
• Solar
• Pilot Wire
DESCRIPTION
The AFE031 is a low-cost, integrated, powerline
communications (PLC) analog front-end (AFE) device
that is capable of capacitive- or transformer-coupled
connections to the powerline while under the control
of a DSP or microcontroller. It is ideal for driving low-
impedance lines that require up to 1.5 A into reactive
loads. The integrated receiver is able to detect
signals down to 20 μV_RMS and is capable of a wide
range of gain options to adapt to varying input signal
conditions. This monolithic integrated circuit provides
high reliability in demanding powerline
communications applications.
The AFE031 transmit power amplifier operates from a
single supply in the range of 7 V to 24 V. At
maximum output current, a wide output swing
provides a 12-V_PP (I_OUT = 1.5 A) capability with a
nominal 15-V supply. The analog and digital signal
processing circuitry operates from a single 3.3-V
power supply.
The AFE031 is internally protected against
overtemperature and short-circuit conditions. It also
provides an adjustable current limit. An interrupt
output is provided that indicates both current limit and
thermal limit. There is also a shutdown pin that can
be used to quickly put the device into its lowest
power state. Through the four-wire serial peripheral
interface, or SPI™, each functional block can be
enabled or disabled to optimize power dissipation.
The AFE031 is housed in a thermally-enhanced,
surface-mount PowerPAD package (QFN-48).
Operation is specified over the extended industrial
junction temperature range of –40°C to +125°C.
DVDD
DGND
AGND1
AVDD1
AGND2
AVDD2
SCLK
DI
DO
CS
DAC
SD
Tx_FLAG
Rx_FLAG
INT
ZC1
Bias
ZC2
Digital Interface
(SPI)
Control
Register
Power
Amplifier
Digital-to-Analog
Converter
AFE031
TxPGA
Tx Filter
Two-Wire Rx/Tx
RxPGA_1
Rx Filter
RxPGA_2
E_Tx_CLK
E_Tx_IN
E_Tx_OUT
Rx_PGA1_IN
Rx_PGA1_OUT
Rx_F_IN
Rx_C1
Rx_C2
Rx_F_OUT
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD, C2000 are trademarks of Texas Instruments.
2
SPI is a trademark of Motorola, Inc.
3
All other trademarks are the property of their respective owners.
4
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2010–2012, Texas Instruments Incorporated