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ST7537HS1 Datasheet(数据表) 1 Page - STMicroelectronics

部件型号  ST7537HS1
说明  HOME AUTOMATION MODEM
下载  9 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
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ST7537HS1 Datasheet(HTML) 1 Page - STMicroelectronics

   
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ST7537HS1
HOME AUTOMATION MODEM
June 1995
5
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19
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DVCC
RSTO
RxD
TxD
CD
Rx/Tx
WD
PAFB
ATO
PABC
PABC
TEST1
TEST2
TxIFI
PIN CONNECTIONS
PLCC28
(Plastic Chip Carrier)
ORDER CODE : ST7537HS1
.
HALF DUPLEX ASYNCHRONOUS 2400bps
FSK MODEM
.
Tx CARRIER FREQUENCY SYNTHESIZED
FROM EXTERNAL CRYSTAL
.
LOW DISTORTION Tx SIGNAL
.
Rx SENSITIVITY BETTER THAN 1mVRMS
.
CARRIER DETECTION
.
WATCH-DOG INPUT
.
RESET AND MASTER CLOCK OUTPUTS
FOR MICROCONTROLLER
.
POWER AMPLIFIER BIAS CURRENT CON-
TROL (HIGH IMPEDANCE IN Rx MODE)
.
SIMPLE AND ECONOMICAL APPLICATION
SCHEMATICS
.
COMPATIBLE WITH CENELEC EN 50065-1
AND FCC SPECIFICATION
.
CARRIER DETECT CLAMPING ON RxD
PROGRAMMABLE (ALLOWING DEMODULA-
TION ON VERY LOW RECEIVE LEVEL,
1mVRMS TYPICALLY)
DESCRIPTION
The ST7537HS1 is a half duplex asynchronous
FSK MODEM designed for home automation com-
munication on the domestic electric mains which
complies with the EN 50065-1 CENELEC stand-
ard.
It mainly operates from a 10V power supply and a
5V power supply for the microcontroller digital in-
terface.
It is interfaced to the power line by an external
driver, and a transformer (see Application Sche-
matic Diagram). Its data transmission rate is
2400 bps and its carrier frequency is 132.45kHz.
1/9




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