[SOLVED] MT8870 o/p does not go to zero when after removing the dtmf input

Status
Not open for further replies.
A

alisufian

Newbie level 3
Joined
Jul 6, 2012
Messages
4
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,299
hey everyone ,
MT8870 o/p does not go to zero when there is no dtmf input, mean when i input a dtmf tone i can see o/p on Q1 Q2 Q3 and Q4 pins , but as i remove the dtmf i/p the previous o/p do not disappear.
plz do me favor. and sorry in advance for my bad english
 

That would appear to be the correct behavior from the datasheet. You need to monitor the StD pin.

Keith
 
Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…