0
\$\begingroup\$

Can someone tell me where I need to place a potentiometer to control the volume in this LM4910 amplifier circuit?

Does the shutdown pin need a pull up resistor to enable the IC?

enter image description here

\$\endgroup\$
0
\$\begingroup\$

One way to do this would be to make R3 and R4 adjustable with a potentiometer. The other way would be to put a potentiometer on the output of the amplifier.

Be sure to use a dual potentiometer so both channels change the same resistance value, otherwise the channels will have different volume outputs (with two different potentiometer ) .

| improve this answer | |
\$\endgroup\$
  • 1
    \$\begingroup\$ Putting pots on the output is unlikely to be successful, this is made for driving a 32 Ohm headset. \$\endgroup\$ – Jack Creasey May 20 '19 at 15:51
0
\$\begingroup\$

Read the datasheet for the LM4910 as this will tell you everything you need to know about the chip.
This amplifier is not really designed to use a physical volume control other than that provided by the equipment it plugs into. I imagine you would need an A-law stereo potentiometer on the input such as this if you are trying to make a very small physical implementation:

enter image description here

| improve this answer | |
\$\endgroup\$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.