ST7538PTR STMicroelectronics, ST7538PTR Datasheet
ST7538PTR
Specifications of ST7538PTR
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ST7538PTR Summary of contents
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FEATURES ■ HALF DUPLEX FREQUENCY SHIFT KEYING (FSK) TRANSCEIVER ■ INTEGRATED POWER LINE DRIVER WITH PROGRAMMABLE VOLTAGE AND CURRENT CONTROL ■ PROGRAMMABLE INTERFACE: – SYNCHRONOUS – ASYNCHRONOUS ■ SINGLE SUPPLY VOLTAGE (FROM 7 12.5V) VERY LOW POWER ...
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ST7538 Figure 3. Pin Connection (Top view) CD_PD DVSS RXD RxTx TXD GND TOUT CLR/T DVDD MCLK Table 2. Pin Description N° Name Type 1 CD_PD Digital/Output 2 DVss Supply 3 RxD Digital/Output 4 RxTx Digital/Input with internal pull-up 5 ...
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Table 2. Pin Description (continued) N° Name Type 13 TEST 3 Digital/Input with internal pull-down 14 WD Digital/Input with internal pull-up 15 ZCOUT Digital/Output 16 1 Analog/Input ZCIN 17 NC Floating 18 DVss Supply 19 ATOP1 Power/Output 20 PAVss Supply ...
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ST7538 Table 3. Absolute Maximum Ratings Symbol PAV Power Supply Voltage CC AV Analog Supply Voltage dd DV Digital Supply Voltage dd AV /DV Voltage between Digital input Voltage I V Digital output Voltage O I ...
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Table 5. Electrical Characteristcs (AVcc = DVcc = +5V, PAVcc =+9 V, PAVss, SGND = DVss = 0V,-40°C ≤ Tamb ≤ 85° 86kHz, other Control Register parameters as default value, unless otherwise specified). Symbol Parameter AV , Supply ...
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ST7538 Table 5. Electrical Characteristcs (continued) (AVcc = DVcc = +5V, PAVcc =+9 V, PAVss, SGND = DVss = 0V,-40°C ≤ Tamb ≤ 85° 86kHz, other Control Register parameters as default value, unless otherwise specified). Symbol Parameter V ...
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Table 5. Electrical Characteristcs (continued) (AVcc = DVcc = +5V, PAVcc =+9 V, PAVss, SGND = DVss = 0V,-40°C ≤ Tamb ≤ 85° 86kHz, other Control Register parameters as default value, unless otherwise specified). Symbol Parameter R Input ...
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ST7538 Table 5. Electrical Characteristcs (continued) (AVcc = DVcc = +5V, PAVcc =+9 V, PAVss, SGND = DVss = 0V,-40°C ≤ Tamb ≤ 85° 86kHz, other Control Register parameters as default value, unless otherwise specified). Symbol Parameter T ...
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FUNCTIONAL DESCRIPTION 3.1 Carrier Frequencies ST7538 is a multi frequency device: eight programmable Carrier Frequencies are available (see table 6). Only one Carrier at a time can be used; anyway, it's possible to switch the communication channel during the ...
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ST7538 3.3 Mark and Space Frequencies Mark and Space Communication Frequencies are defined by the following formula: ∆F F ("0") = FCarrier + [ ]/2 ∆F F ("1") = FCarrier - [ ]/2 ∆F(Frequency Deviation) = Deviation*BAUD rate. Here follows ...
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Host Processor Interface ST7538 exchanges data with the host processor thorough a serial interface. The data transfer is managed by REG_DATA and and CLR/T lines. Four are the ST7538 working modes: ■ Data Reception ■ Data Transmission ■ Control ...
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ST7538 – Synchronous mode. ST7538 allows to interface the host Controller using a four lines synchronous interface (RXD,TXD, CLR/ T & ). ST7538 is always the master of the communication and provides the clock reference on CLR/ RxTx T line. ...
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Figure 7. Data Reception ➨ Control Register read CLR_T RXD T CR REG_DATA RxTx Figure 8. Data Reception ➨ Control Register write CLR_T RXD T CR REG_DATA RxTx TXD Figure 9. Data ...
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ST7538 3.6 Receiving Mode The receive section is active when The input signal is read on RAI Pin using SGND as ground reference and then pre-filtered by a Band pass Filter (62kHz max. bandwidth at -3dB). The Pre-Filter can be ...
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Carrier/Preamble Detection The Carrier/Preamble Block is a digital Frequency detector Circuit. It can be used to manage the MAINS access and to detect an incoming signal. Two are the possible setting: - Carrier Detection - Preamble Detection CARRIER DETECTION: ...
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ST7538 3.7 Transmission Mode The transmit mode is set when ulator and the Power Line Interface are turned ON. The transmit Data (TXD) enter synchronously or asyn- chronously to the FSK modulator. – Host Controller Synchronous Communication Mode: on CLR/T ...
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Automatic Level Control (ALC) The Automatic Level Control Block (ALC variable gain amplifier (with 32 non linear discrete steps) controlled by two analog feed backs acting at the same time. The ALC gain range is 0dB to ...
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ST7538 Table 10. Vout vs. R1 & R2 resistors value Vout (Vrms) Vout (dBµV) 0.150 103.5 0.250 108.0 0.350 110.9 0.500 114.0 0.625 115.9 0.750 117.5 0.875 118.8 1.000 120.0 1.250 121.9 1.500 123.5 Notes: The rate of R2 takes ...
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Figure 17. PLI Bridge Topology INVERTER ALC Figure 18. PLI Startup Timing Diagram RX/TX ATOP2 ATOP2 ATOP1 Vout R1 Vsense VOLTAGE LOOP 5.6nF R2 CL CURRENT LOOP RCL PAVss D03IN1422 T ALC T T RXTX STEP NUMBER ...
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ST7538 3.8 Crystal Oscillator ST7538 integrates a sub-threshold driver circuit to realize a 16MHz crystal oscillator. This circuit is able to drive a maximum load capacitance of 16pF with typical quartz ESR of 40Ω. If the internal driver circuit is ...
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Zero Crossing Synchronization ■ Detection Method ■ Mains Interfacing Mode Output Clock ■ Input Pre-Filter ■ ■ Sensitivity Mode Table 11. Control Register Functions Function Frequencies Baud Rate 5 Deviation 6 Watchdog Enabled ...
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ST7538 Table 11. Control Register Functions (continued) Function Detection Carrier detection Method without conditioning Carrier detection with conditioning Preamble detection without conditioning Preamble detection with conditioning 14 Mains Synchronous Interfacing Asynchronous Mode Output Clock ...
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AUXILIARY ANALOG AND DIGITAL FUNCTIONS 4.1 Band In Use The Band in Use Block has a Carrier Detection like function but with a different Input Sensibility (77dBµV Typ.) and with a different BandPass filter Selectivity (40dB/Dec). BU line is ...
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ST7538 4.4 Zero Crossing Detection The Mains Voltage Zero Crossing can be detected, through a proper connection of ZCIN to the Mains. ZCIN comparator has a threshold fixed at SGND. ZCOUT is a TTL Output forced High after a positive ...
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Voltage Regulator and Power Good Function ST7538 has an embedded 5V linear regulator externally available to supply the application circuitry. The linear regulator has a very low quiescent current (50µA) and a current capability of 100mA. The reg- ...
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ST7538 Figure 26. Application Schematic Example with Coupling Tranformer. 26/30 ...
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PACKAGE INFORMATION In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner box ...
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ST7538 Figure 29. TQFP44 (Slug Down) Mechanical Data & Package Dimensions mm DIM. MIN. TYP. MAX. A 1.60 A1 0.05 0.15 A2 1.35 1.40 1.45 b 0.30 0.37 0.45 c 0.09 0.20 D 11.80 12.00 12.20 D1 9.80 10.00 10.20 ...
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Table 12. Revision History Date Revision January 2004 24-Nov-2005 4 Migration from ST-Press to EDOCS DMS. 5 Removed “Packet Mode” function. Inserted new Paragraph 3.8. on Crystal Oscillator. Added ECOPACK information. Description of Changes ST7538 29/30 ...
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... No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics ...