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resources:eval:ezlinx:isolated-i2c [28 May 2012 12:54]
Hein Marais Approved
resources:eval:ezlinx:isolated-i2c [31 Dec 2020 07:22]
Robin Getz fix links
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 ====== ezLINX™ Isolated I2C Implementation====== ====== ezLINX™ Isolated I2C Implementation======
  
-The Isolated I2C port is implemented using the [[http://​www.analog.com/​adum1250|ADuM1250]] I2C Isolator and [[http://​www.analog.com/​adum5000|ADuM5000]] //​iso//​Power Isolated DC to DC converter. The [[http://​www.analog.com/​adum1250|ADuM1250]] connects to TW1 of the ADSP-BF548 and is capable of functioning at a maximum frequency of 1MHz. Figure 1 below shows a circuit diagram of the implementation of the [[http://​www.analog.com/​adum1250|ADuM1250]] and [[http://​www.analog.com/​adum5000|ADuM5000]] on the //ez//LINX hardware.+The Isolated I2C port is implemented using the [[adi>ADuM1250]] I2C Isolator and [[adi>ADuM5000]] //​iso//​Power Isolated DC to DC converter. The [[adi>ADuM1250]] connects to TW1 of the ADSP-BF548 and is capable of functioning at a maximum frequency of 1MHz. Figure 1 below shows a circuit diagram of the implementation of the [[adi>ADuM1250]] and [[adi>ADuM5000]] on the //ez//LINX hardware.
  
 {{ :​ezlinx:​isolatedi2c.png?​nolink&​600 |Figure 1. Isolated I2C schematic}} {{ :​ezlinx:​isolatedi2c.png?​nolink&​600 |Figure 1. Isolated I2C schematic}}
  
-VDD1 of the [[http://​www.analog.com/​adum1250|ADuM1250]] and VDD1 of the [[http://​www.analog.com/​adum5000|ADuM5000]] are both powered by 3.3V. The ADuM5000 will generate an isolated 3.3V which is used to supply power to VDD2 of the [[http://​www.analog.com/​adum1250|ADuM1250]].+VDD1 of the [[adi>ADuM1250]] and VDD1 of the [[adi>ADuM5000]] are both powered by 3.3V. The ADuM5000 will generate an isolated 3.3V which is used to supply power to VDD2 of the [[adi>ADuM1250]].
  
 A three pin screw terminal connector, J22, is used for easy access to the SDA (Pin 1), SCL (Pin 2) and I2C_ISO_GND (Pin 3) connections. A three pin screw terminal connector, J22, is used for easy access to the SDA (Pin 1), SCL (Pin 2) and I2C_ISO_GND (Pin 3) connections.
resources/eval/ezlinx/isolated-i2c.txt · Last modified: 31 Dec 2020 07:22 by Robin Getz