I was made audiometer using dac and digital atttenator [ some resi. and ic 4051 ].
But that ckt is bulky need + - supply .
Now i go for battery operated a.meter for that i am using r-2r for dac and for digital att i am thinking to use TDA8551 / TDA7315 i already used TDA7315 but for small size i want to go with TDA8551.
I actually ever not used TDA8551.
What is you suggestion.
Thank you for reply.
But that ckt is bulky need + - supply .
Now i go for battery operated a.meter for that i am using r-2r for dac and for digital att i am thinking to use TDA8551 / TDA7315 i already used TDA7315 but for small size i want to go with TDA8551.
I actually ever not used TDA8551.
What is you suggestion.
Thank you for reply.