dominate
I would love to see this work.
Maybe using something like this for drivers....
http://www.getmad.com/mad_a8.html
I would love to see this work.
Maybe using something like this for drivers....
http://www.getmad.com/mad_a8.html
One block (2 bit in and out) of board. 2x1.4 inch.
I have to copy this 26 times.
From left,
Analog switch and LPF R&C
Differencial Amplifier Rs
OpAmps, Top Differencial Amp & driver, for 1bit, mid 2 LPF, Bottom other bit.
Power Capacitors,
TR and bias Diodes, Rs.
I have to copy this 26 times.
From left,
Analog switch and LPF R&C
Differencial Amplifier Rs
OpAmps, Top Differencial Amp & driver, for 1bit, mid 2 LPF, Bottom other bit.
Power Capacitors,
TR and bias Diodes, Rs.
Attachments
I wrote board but too complicated, too large. It should be more simple.
Let's make 5V single supply circuit.
amplifier section will use TPA311, TI's small amplifier.
I need voltage reference, and positive/negative side driving voltage.
Attached circuit can make 1/2Vdd adjusted positive/negative driving signal. (one switch will supply driving signal to each bit section).
Then each bit section can be driven single 5V power supply.
(switch selects between 1/2Vdd and driving signal)
Let's make 5V single supply circuit.
amplifier section will use TPA311, TI's small amplifier.
I need voltage reference, and positive/negative side driving voltage.
Attached circuit can make 1/2Vdd adjusted positive/negative driving signal. (one switch will supply driving signal to each bit section).
Then each bit section can be driven single 5V power supply.
(switch selects between 1/2Vdd and driving signal)
Attachments
Here is ver.02 schematic.
http://koonlab.com/DigiSP/DSP_SCH02.pdf
Now all circuits work on 5V single supply, amplifier section was changed to TPA2005, TI's small Class D amplifier.
http://koonlab.com/DigiSP/DSP_SCH02.pdf
Now all circuits work on 5V single supply, amplifier section was changed to TPA2005, TI's small Class D amplifier.
I know this is only vaguely related, and I don't know if such a think exists, but is it not possible to produce a direct digital speaker driver, by having multiple coils? Eg for a 16 bit speaker, you'd have 16 coils, with 1 turn, 2 turns, 4 turns, 8 turns, etc. Or simply have identical coils, but drive them with successively larger voltages/current?
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