What is this BA5096?

Jay · 13th May 2010, 06:42 AM

Anybody can help me identify what kind of IC the BA5096 is? Attached pdf is in Chinese language.

The pin description looks like a DAC but I cannot figure out what it is doing with the opamp in its output.

Joris · 13th May 2010, 07:07 AM

I think it is most likely to be a spindle motor driver.
Or maybe a laser steering, but that is less likely.
Have a look at the X601 connector in the schematic you sent.

Mooly · 13th May 2010, 07:38 AM

Very strange circuit... the 4558's are obviously audio looking at the component values, but why two "channels" when they are fed from a common source (pin 27).

The clue has to be the pin out descriptions and component values, is it to do with recovering audio from a carrier... amatuer radio etc
The input side and the component values suggest low frequencies C612 and C616 and R617 form a LPF so it's not "digital data" as such that's being applied.

Let us know

Jay · 14th May 2010, 07:09 PM

I just realized that the input is analog. But the IC has separated supply pins for digital and analog. So the IC must process the analog signal in digital form and transform back to analog. From the circuit we can see a "direct" connection from input (pin#28) to output (bypassing the IC). Assuming the input is an audio signal, part of the signal is "processed" inside of the IC then summed in the output. Is it sound effect? Echo may be? If only I can understand what the opamp do, I think that is the clue....

Imagine a processed audio signal is amplified by 2 opamps. What is the difference to the output if one opamp gives higher slew rate than the other??

amc184 · 14th May 2010, 08:41 PM

It's a digital reverberation IC. Attached is a translation of the block diagram.

Mooly · 15th May 2010, 06:05 AM

Quote:

Originally Posted by amc184

It's a digital reverberation IC. Attached is a translation of the block diagram.

Ahhh

Not seen one of those before.

Jay · 16th May 2010, 03:04 AM

Thank you all. I still don't know the function of the opamp in the output, but it doesn't matter. At least I know this is a reverberation circuit

I found a small PCB with this IC and a few opamps on board. Was hoping it was a DAC. Well...

Mooly, while you are here, what is the story regarding your MLH (Mooly Lindsey Hood) amp? Are you still in love with her or is there another one replacing her? I have a plan to build it later to compare with a modified Russel Breden amp.

Mooly · 16th May 2010, 06:13 AM

Quote:

Originally Posted by Jay

Mooly, while you are here, what is the story regarding your MLH (Mooly Lindsey Hood) amp? Are you still in love with her or is there another one replacing her? I have a plan to build it later to compare with a modified Russel Breden amp.

The love affair continues.

arra · 3rd September 2010, 06:16 PM

BA5096 = ES56028 echo sound processor

arra · 3rd September 2010, 06:23 PM

Quote:

Originally Posted by Mooly

The love affair continues.

BA5096 = ES56028(echo sound processor)

13th May 2010, 07:38 AM	#3
Mooly diyAudio Member Join Date: Sep 2007	Very strange circuit... the 4558's are obviously audio looking at the component values, but why two "channels" when they are fed from a common source (pin 27). The clue has to be the pin out descriptions and component values, is it to do with recovering audio from a carrier... amatuer radio etc The input side and the component values suggest low frequencies C612 and C616 and R617 form a LPF so it's not "digital data" as such that's being applied. Let us know __________________ ------------------------------------------------------- *A simulation free zone.* *Design it, build it, test it.*

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13th May 2010, 07:07 AM	#2
Joris diyAudio Member Join Date: Aug 2009 Location: Noord-Holland	I think it is most likely to be a spindle motor driver. Or maybe a laser steering, but that is less likely. Have a look at the X601 connector in the schematic you sent.

14th May 2010, 07:09 PM	#4
Jay diyAudio Member Join Date: Feb 2003 Location: Jakarta	I just realized that the input is analog. But the IC has separated supply pins for digital and analog. So the IC must process the analog signal in digital form and transform back to analog. From the circuit we can see a "direct" connection from input (pin#28) to output (bypassing the IC). Assuming the input is an audio signal, part of the signal is "processed" inside of the IC then summed in the output. Is it sound effect? Echo may be? If only I can understand what the opamp do, I think that is the clue.... Imagine a processed audio signal is amplified by 2 opamps. What is the difference to the output if one opamp gives higher slew rate than the other??

16th May 2010, 03:04 AM	#7
Jay diyAudio Member Join Date: Feb 2003 Location: Jakarta	Thank you all. I still don't know the function of the opamp in the output, but it doesn't matter. At least I know this is a reverberation circuit I found a small PCB with this IC and a few opamps on board. Was hoping it was a DAC. Well... Mooly, while you are here, what is the story regarding your MLH (Mooly Lindsey Hood) amp? Are you still in love with her or is there another one replacing her? I have a plan to build it later to compare with a modified Russel Breden amp.

3rd September 2010, 06:16 PM	#9
arra diyAudio Member Join Date: Sep 2010	BA5096 = ES56028 echo sound processor

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