ST7538 Datasheet, PDF (1/30 Pages) STMicroelectronics – POWER LINE FSK TRANSCEIVER

ST7538
FSK POWER LINE TRANSCEIVER
1 FEATURES
Figure 1. Package
■ HALF DUPLEX FREQUENCY SHIFT KEYING
(FSK) TRANSCEIVER
■ INTEGRATED POWER LINE DRIVER WITH
PROGRAMMABLE VOLTAGE AND CURRENT
TQFP44 Slug Down
CONTROL
■ PROGRAMMABLE INTERFACE:
– SYNCHRONOUS
Table 1. Order Codes
Part Number
Package
– ASYNCHRONOUS
■ SINGLE SUPPLY VOLTAGE (FROM 7.5 UP TO 12.5V)
t(s) ^{■ VERY LOW POWER CONSUMPTION (Iq=5 mA)}
■ INTEGRATED 5V VOLTAGE REGULATOR
c _{(UP TO 100mA) WITH SHORT CIRCUIT}
u _PROTECTION
rod ^{■ 8 PROGRAMMABLE TRANSMISSION}
FREQUENCIES
P _{■ PROGRAMMABLE BAUD RATE UP TO 4800BPS}
te ■ RECEIVING SENSITIVITY 250µVRMS
le ■ SUITABLE TO APPLICATION IN ACCORDANCE
o _{WITH EN 50065 CENELEC SPECIFICATIONS}
s _{■ CARRIER OR PREAMBLE DETECTION}
b _{■ BAND IN USE DETECTION}
O _{■ PROGRAMMABLE REGISTER WITH}
) ^{- SECURITY CHECKSUM}
t(s ^{■ MAINS ZERO CROSSING DETECTION AND}
SYNCHRONIZATION
ST7538P
TQFP44 (Slug down)
■ WATCHDOG TIMER
2 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 BCD5 technology that al-
lows to integrate DMOS, Bipolar and CMOS struc-
tures in the same chip.
duc ^{Figure 2. Block Diagram}
ro_{DVdd AVdd}
DVss AVss
TEST1 TEST2 TEST3
BU
RxFo
te ^{P CD/PD}
le ^RxD
CLR/T
Obso ^REG/DATA
CARRIER
DETECTION
TEST
PLL
DIGITAL
FILTER
FSK
DEMOD
IF
FILTER
SERIAL
INTERFACE
CONTROL
REGISTER
BU
AGC
FILTER
AMPL
RAI
FILTER
CURRENT
CONTROL
CL
RxTx
TxD
FSK
MODULATOR
DAC
TX
FILTER
ALC
VOLTAGE
CONTROL
Vsense
REGOK
ATO
PLI
ATOP1
OSC
TIME BASE
ZC
OP-AMP
+
-
VREG
ATOP2
PAVcc
Vdc
PG
XOut XIn WD TOUT RSTO MCLK ZCout ZCin C_OUT CMINUS CPLUS
D03IN1407A
November 2005
Rev. 5
1/30