I'm looking to design an amplifier PCB for 7297 chip, and a PSU. But I want to get this done before I'm an old man that figures out PCB software.
The TDA7297 datasheet already has a recommended layout:
http://www.st.com/web/en/resource/technical/document/datasheet/CD00001048.pdf
Or, are you looking for something different? Do you have a schematic you want to use?
http://www.st.com/web/en/resource/technical/document/datasheet/CD00001048.pdf
Or, are you looking for something different? Do you have a schematic you want to use?
I cannot see where that is a freebie!
It says available in three versions: 1000, 2000 and unlimited pins.
I just did this in Eagle.
I attached the layout and schematics and final products 🙂
I received a great deal of help in designing the TDA7297 board from "danielwritesbac" member. He's been great at leading the way!
The power supply can be used with either LM317/LM338/LT1083/LT1084/LT1085. You need to take care of the output side of the board if using LT regulators as they can oscillate under certain conditions. There's also a load resistor to keep the regulator at about 50mA idle, also a snubber option if anyone wants to fuss with that. If you install a LED on the PS then you don't need any on the amp board.
The amp board has an option for dual rail supply, or a single one through the diodes. Also there's another hole for smaller input caps on the amp board. I didn't put any notations on the amp board as I made it for myself and I know what's what. But shouldn't be too hard to figure out. You can use the design if you wish, for yourself. I can provide the gerber files that I used.
I attached the layout and schematics and final products 🙂
I received a great deal of help in designing the TDA7297 board from "danielwritesbac" member. He's been great at leading the way!
The power supply can be used with either LM317/LM338/LT1083/LT1084/LT1085. You need to take care of the output side of the board if using LT regulators as they can oscillate under certain conditions. There's also a load resistor to keep the regulator at about 50mA idle, also a snubber option if anyone wants to fuss with that. If you install a LED on the PS then you don't need any on the amp board.
The amp board has an option for dual rail supply, or a single one through the diodes. Also there's another hole for smaller input caps on the amp board. I didn't put any notations on the amp board as I made it for myself and I know what's what. But shouldn't be too hard to figure out. You can use the design if you wish, for yourself. I can provide the gerber files that I used.
Attachments
Last edited:
Well it doesn't look bad, but it's far from what I'm looking at doing. First I want to mono the amplifier. Next I have a very different PSU in mind.
I've actually mislead you there, the Design Spark software is free but it's not as easy to use as Express PCB.
ExpressPCB - Free PCB layout software - Low cost circuit boards - Top quality PCB manufacturing
For one off's I use Express PCB. The PCBs from their service aren't cheap but that's OK for one offs. I just print them and etch my own anyway.
ExpressPCB - Free PCB layout software - Low cost circuit boards - Top quality PCB manufacturing
For one off's I use Express PCB. The PCBs from their service aren't cheap but that's OK for one offs. I just print them and etch my own anyway.
Try FreePDB. It is free easy to use, parts are easy to make, and it generates Gerbers for manufacturing. One drawback, there is no print function.
Abs
Abs
- Status
- Not open for further replies.