Hello Kai,
TI does not have a pin-for-pin replacement for the BA3123F ground isolation amplifier. The closest product function that we do have is the INA1650, a SoundPlus™ High Common-Mode Rejection Line Receiver. It provides dual audio channels that produce excellent CMRR performance which is needed to reject common-mode noise that can be present on automotive audio lines. A difference between the two devices is the INA1650 does not have the internal input buffering circuit of the BA3123F. That is something that would have to be considered with regard to the system design.
The INA1650 is available AEC-Q100 qualified which can be a requirement for some automotive applications. You can find more information about the INA1650 here:
Regards, Thomas
Precision Amplifiers Applications Engineering
HI Thomas
Very clearly
do you mean input buffer as below circuit ?
May I know which TI solution have this kind of input buffer ?
Thanks
Hello Kai,
My mistake; upon closer inspection of the INA1650 circuitry I see that it does have internal input buffers; therefore, no additional buffering is required. The input buffers are evident from the datasheet schematic and appear as the triangle symbols preceding the two difference amplifier stages.
Regards, Thomas
Precision Amplifiers Applications Engineering
