ST7540 Datasheet, PDF (1/44 Pages) STMicroelectronics – FSK power line transceiver

ST7540
FSK power line transceiver
General features
■ Half-duplex frequency shift keying (FSK)
transceiver
■ Integrated power line driver with programmable
voltage and current control
■ Programmable mains access:
– Synchronous
– Asynchronous
■ Single supply voltage (from 7.5V up to 13.5V)
■ Very low power consumption (I_q = 5mA)
■ Integrates 5V voltage regulator (up to 50mA)
with short circuit protection
■ Integrated 3.3V voltage regulator (up to 50mA)
with short circuit protection
■ 3.3V or 5V digital supply
■ 8 Programmable transmission frequencies
■ Programmable baud rate up to 4800BPS
■ Receiving sensitivity up to 250µV_RMS
■ Suitable for applications in accordance with EN
50065 Cenelec specification
■ Carrier or preamble detection
■ Band in use detection
■ Programmable control register
■ Watchdog timer
■ 8 or 16 Bit header recognition
■ ST7537 and ST7538 compatible
■ UART/SPI host interface
HTSSOP28 Exposed Pad
Description
The ST7540 is a Half Duplex
synchronous/asynchronous FSK Modem
designed for power line communication network
applications. It operates from a single supply
voltage and integrates a line driver and two linear
regulators for 5V and 3.3V. The device operation
is controlled by means of an internal register,
programmable through the synchronous serial
interface. Additional functions as watchdog, clock
output, output voltage and current control,
preamble detection, time-out and band in use are
included. Realized in Multipower BCD5
technology that allows to integrate DMOS, Bipolar
and CMOS structures in the same chip.
Order codes
Part number
ST7540
ST7540TR
Package
HTSSOP28 (Exposed Pad)
HTSSOP28 (Exposed Pad)
Packaging
Tube
Tape and reel
September 2006
Rev 2
1/44
www.st.com
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