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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TDA7575B датащи(PDF) 17 Page - STMicroelectronics |
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TDA7575B датащи(HTML) 17 Page - STMicroelectronics |
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17 / 32 page  TDA7575B I2C bus interface Doc ID 14103 Rev 3 17/32 Figure 27. Timing diagram on the I2C bus Figure 28. Timing acknowledge clock pulse 5.5 1 capability setting It is possible to drive 1 load paralleling the outputs into a single channel. In order to implement this feature, outputs are to be connected on the board as follows: ● OUT1+ (pin 35 and pin 36) shorted to OUT2+ (pin 19 and pin 20) ● OUT1- (pin 28 and pin 29) shorted to OUT2- (pin 26 and pin 27). It is recommended to minimize the impedance on the board between OUT2 and the load in order to minimize THD distortion. It is also recommended to control the maximum mismatch impedance between VCC pins (pin 21/pin 22 respect to pin 33/pin 34) and between PWGND pins (pin 24/pin 25 respect to pin 30/pin 31), mismatch that must not exceed a value of 20 m With 1 feature settled the active input is IN2 (pin 17 and pin 18), therefore IN1 pins should be let floating. It is possible to set the load capability acting on 1 pin as follows: 1 pin (pin 15) < 1.5 V: two channels mode (for a minimum load of 2 ) 1 pin (pin 15) > 2.5 V: one channel mode (for 1 load). It is to remember that 1 Ohm function is a hardware selection. Therefore it is recommended to leave 1 pin floating or shorted to GND to set the two channels mode configuration, or to short 1 pin to V CC to set the one channel (1) configuration. SCL SDA START I2CBUS STOP D99AU1032 SCL 1 MSB 23789 SDA START ACKNOWLEDGMENT FROM RECEIVER D99AU1033 |
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