AFE031 Texas instruments

AFE031

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AFE031

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Описание

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 µVRMS 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-VPP (IOUT = 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.

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

Number of channels	1
Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V)	7
Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V)	26
Iout (typ) (A)	1.5
GBW (typ) (MHz)	0.67
Slew rate (typ) (V/µs)	19
Iq per channel (typ) (mA)	49
Features	Adj Current Limit, Shutdown
Rating	Catalog
Operating temperature range (°C)	-40 to 125
Rail-to-rail	No
Architecture	FET