PDF ST7537HS1 Data sheet ( Hoja de datos )

Número de pieza	ST7537HS1
Descripción	HOME AUTOMATION MODEM
Fabricantes	ST Microelectronics
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No Preview Available ! 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) HOME AUTOMATION MODEM PLCC28 (Plastic Chip Carrier) ORDER CODE : ST7537HS1 PIN CONNECTIONS 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. June 1995 TxIFI PAFB ATO PABC PABC TEST1 TEST2 5 6 7 8 9 10 11 25 DVCC 24 RSTO 23 RxD 22 TxD 21 CD 20 Rx/Tx 19 WD 1/9 1 page ST7537HS1 ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value AVDD/DVDD VI VO VO IO VI VO IO PD Toper Tstg Supply Voltage (1) Digital Input Voltage Digital Output Voltage (microcontroller interface) Digital Output Voltage (PABC and PABC) Digital Output Current Analog Input Voltage Analog Output Voltage Analog Output Current Power Dissipation Operating Temperature Storage Temperature - 0.3, + 12 DVSS - 0.3, DVDD + 0.3 DVSS - 0.3, DVCC + 0.3 DVSS - 0.3, DVDD + 0.3 - 5, + 5 AVSS - 0.3, AVDD + 0.3 AVSS - 0.3, AVDD + 0.3 - 5, + 5 500 0, + 70 - 55, + 150 Notes : 1. The voltages are referenced to AVSS and DVSS. 2. Absolute maximum ratings are values beyond which damage to device may occur. Functional operation under these conditions is not implied. Unit V V V V mA V V mA mW oC oC GENERAL ELECTRICAL CHARACTERISTICS (A/DVDD = 10V, A/DVSS = 0V, DVCC = 5V and 0oC ≤ Tamb ≤ 70oC, unless otherwise specificied) Symbol AVDD DVDD AIDD + DIDD DVCC DICC VIH VIL VOH Parameter Supply Voltage Supply Current Digital Output Supply Voltage Digital Output Supply Current High Level Input Voltage Low Level Input Voltage High Level Output Voltage VOL Low Level Output Voltage DC Duty Cycle Test Conditions Digital Inputs Digital Inputs •IOHDi=gi-t1a0l O0µuAtputs • Digital Outputs PABC and PABC •IOLD=igi1ta0l0OµAutputs • Digital Outputs PABC and PABC MCLK Output, CL = 15pF Min. Typ. Max. Unit 9.5 10 10.5 V 30 mA 4.75 5.25 V 1.5 mA 4.2 V 0.8 V 4.9 V 9.8 V 0.1 V 0.2 V 40 60 % TRANSMITTER ELECTRICAL CHARACTERISTICS (A/DVDD = 10V, A/DVSS = 0V, DVCC = 5V and 0oC ≤ Tamb ≤ 70oC, unless otherwise specificied) Symbol VTAC HD2 HD3 FD Parameter Max Carrier Output AC Voltage Second Harmonic Distortion Third Harmonic Distortion FSK Peak-to-peak Deviation Test Conditions RL = 5.6kΩ RL(AVSS) = 5.6kΩ R(ATO, PAFB) = 1kΩ Min. 0.8 Typ. 1.0 - 50 - 60 1200 Max. 1.3 Unit VRMS dB dB Hz 5/9 5 Page

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ST7537HS1	HOME AUTOMATION MODEM	ST Microelectronics

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