Daisy Chain Amplifiers?
I have a couple amplifier chips, and i would like to know how i could daisy chain them (connect them together for more power)
i am using STMicro TDA7266s pdf
i have tried putting amplifier chip in series with each other (not the outputs, but all the pins)
help?
i am using STMicro TDA7266s pdf
i have tried putting amplifier chip in series with each other (not the outputs, but all the pins)
help?
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Jan 19, 2009. 2:46 PM11010010110
says:
you need it to output high current at low voltage see what identical chips you have i assume from here on that they are like power opamps connect them in parallel on all pins except output connect a dc filtering capacitor of its own to the output of each connect the outputs of the capacitors together to the speaker output
. Starting a new thread to give more room. > what if i were to use a TPA3122D2 . It will do bridging (see Differential Input and BTL Output on page 18). . To do paralleling properly, you need to have access to the op amp inputs. Neither the TDA7266 nor the TPA3122D2 have the pins for that.
. I've never done it with two separate amps, but I think amplifier bridging is what you are after.
. Daisy-chaining two audio amps (using the output of one to drive the input of another), won't work unless the second amp is designed for a very high level input.
Jan 18, 2009. 9:41 PMalex-sharetskiy (author)
says:
oh, i thought daisy chaining was wiring two amp's input in series...
. OK. Not what I think of when I see daisy-chaining. . Wire the inputs in parallel. Most amps have a fairly high impedance (~30KΩ for your amp), but if your source won't handle two, then add some resistors in series with each input. . If you must wire them in series, then wire the inputs as you would batteries; jumper + on one to - on the other. Doesn't look like that option is available with your amp. :(
. I think you will need to go with a paralleled amplifier setup. You need to invert one of the amps for bridging.
. Doesn't look like you can with your amp. You just swap +/- on one amp. The output of one amp is + to the speaker, the other amp is the - side.
. Depends on what Class amplifier you want. Looking at the PDF in your OP, you can't do it with the 7266.
Jan 19, 2009. 10:42 AMalex-sharetskiy (author)
says:
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