Other Parts Discussed in Thread: INA217, TINA-TI
Hai,
I am using DRV134 device as line driver in my audio bus application. The bus consists of two DRV134 devices with the outputs shorted together i.e +V0 of one device is shorted with +V0 of other device and like wise -V0. This shorting is by using a 200meters cable. Inputs of the DRV134 devices will be different i.e from different mics(INA217 is ther between mic and line driver input). My problem is the 6db gain mentioned in the datasheet for DRV134 is dropping down to 3 to 4db when the two line drivers outputs are shorted. Should I not short the outputs of the line drivers? If I shouldn't short the line drivers outputs how can form the audio bus?