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ST7538 Datasheet(PDF) 1 Page - STMicroelectronics |
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ST7538 Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 30 page  1/30 ST7538 September 2003 s HALF DUPLEX FREQUENCY SHIFT KEYING (FSK) TRANSCEIVER s INTEGRATED POWER LINE DRIVER WITH PROGRAMMABLE VOLTAGE AND CURRENT CONTROL s PROGRAMMABLE INTERFACE: – SYNCHRONOUS – ASYNCHRONOUS s SINGLE SUPPLY VOLTAGE (FROM 7.5 UP TO 12.5V) s VERY LOW POWER CONSUMPTION (Iq=5 mA) s INTEGRATED 5V VOLTAGE REGULATOR (UP TO 100mA) WITH SHORT CIRCUIT PROTECTION s 8 PROGRAMMABLE TRANSMISSION FREQUENCIES s PROGRAMMABLE BAUD RATE UP TO 4800BPS s RECEIVING SENSITIVITY 1 mVRMS s SUITABLE TO APPLICATION IN ACCORDANCE WITH EN 50065 CENELEC SPECIFICATIONS s CARRIER OR PREAMBLE DETECTION s BAND IN USE DETECTION s PROGRAMMABLE REGISTER WITH SECURITY CHECKSUM s MAINS ZERO CROSSING DETECTION AND SYNCHRONIZATION s WATCHDOG TIMER DESCRIPTION The ST7538 is a Half Duplex synchronous/asyn- chronous FSK Modem designed for power line communication network applications. It operates from a single supply voltage and integrates a line driver and a 5V linear regulator. The device oper- ation is controlled by means of an internal register, programmable through the synchronous serial in- terface. Additional functions as watchdog, clock output, output voltage and current control, pream- ble detection, time-out, band in use are included. Realized in Multipower BCDV technology that al- lows to integrate DMOS, Bipolar and CMOS struc- tures in the same chip. TQFP44 Slug Down ORDERING NUMBER: ST7538P POWER LINE FSK TRANSCEIVER BLOCK DIAGRAM SERIAL INTERFACE CARRIER DETECTION PLL CD/PD RxD CLR/T REG/DATA RxTx TxD REGOK PG Vdc PAVcc ATOP2 ATOP1 ATO Vsense CL RAI RxFo TEST2 TEST3 TEST1 AVdd DVdd AVss DVss BU XOut WD TOUT RSTO MCLK ZCin ZCout C_OUT CMINUS CPLUS XIn DIGITAL FILTER FSK DEMOD IF FILTER TX FILTER FILTER + - FILTER BU DAC ZC OSC AGC AMPL TEST ALC OP-AMP PLI VREG CURRENT CONTROL VOLTAGE CONTROL FSK MODULATOR TIME BASE CONTROL REGISTER D03IN1407 |
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