sumittokle
New Member
hi.............
we use CM8870 for DTMF encodig.......................
and we made circuit according to the datasheet but then also we don't get output
i attached CM8870 datasheet with this email.....................
1: according to the page no 6 we make our ckt ...................
2: connect mobile head headphone on pin no. 2 after capacitor.........................
3: give the 6 volt power supply (using 5 voltage regulator)................
4: but on output pin we don't get any output when we call ....................
where we get wrong...........................
please reply us.......................
we use CM8870 for DTMF encodig.......................
and we made circuit according to the datasheet but then also we don't get output
i attached CM8870 datasheet with this email.....................
1: according to the page no 6 we make our ckt ...................
2: connect mobile head headphone on pin no. 2 after capacitor.........................
3: give the 6 volt power supply (using 5 voltage regulator)................
4: but on output pin we don't get any output when we call ....................
where we get wrong...........................
please reply us.......................