16-10-2012, 03:54 AM
Hi,
I am a B.Tech 3rd year student and I am doing a project on DTMF (Dual Tone Multiple Frequency) detector. I came to know that HT9170 is the series of DTMF receivers. I have to make this transistor. I got part by part circuit diagram of it but I need full internal circuit diagram of HT9170 transistor.
Can anyone show me full internal circuit diagrm or HT9170?
Saurabh Shrivastava
saurabh.shrivastava64[at]gmail.com