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DAC081C081: DAC081C081

Part Number: DAC081C081


Hi!

I'm using 3 DACs on the I2c Bus , they have this configuration respectively  ( ADR0 = GND , ADR0 = VCC, ADR0 = Floating ) , and in the datasheet as shown in the attached image , we have two problems during operation :

1- For the Broadcast Address which is 1001000 (0X48) , the only device response is the only one with the address ( ADR0 = GND) , the other two deceives doesn't response to the broadcast , which is a conflict with the datasheet.

2- when i connect a fourth device on the same I2c Bus with address (0X4A) , the DACs prevent the the communication with this address 

Although its not in the table of  (Do Not Use)  address 

we need your urgent  support for this situation.