In our applications we have observed that SSM2166 is vulnerable/susceptible to Radio Emissions (with AM modulation) from near by VHF system. In order to overcome this pls suggest the alternative for SSM2166.....
In our applications we have observed that SSM2166 is vulnerable/susceptible to Radio Emissions (with AM modulation) from near by VHF system. In order to overcome this pls suggest the alternative for SSM2166.....
Hi,
Thank you, Bob! The suggestion of an LC on the front end is excellent.
I would add that the SSM2166 can be treated as a differential input. Is your source differential? Are you using a twisted pair…
hi KJ Bob & Coleman,
Sorry for the delay. It was long time i had opened engineer forum. My system is differential and today i made one filter circuit with series 47uH and shunt 0.01uF. Two circuits…
Could you share the schematic for the MIC-HI and MIC-LO inputs through to the SSM? Are these two inputs going to opposite sides of the primary, are they using normalling jacks, etc? How is the ground scheme…
Dear Mr.Bob,
Mr.Bob, thanks for ur reply and showing interest in this problem.
Here in our system the MIC-HI & MIC-LO lines are given to a transformer which is a centre tapped one. And the secondary of the transformer is connected to Pin.no.7 (IN+) of SSM2166. And other end of secondary of the transformer is connected to pin no.6 (IN-) through Resistor and capacitor.
So, i will try to connect 220pF in b/w pin no. 6 & 7. It is an VHF AM transceiver antenna is near by to the audio system. And our audio system is in a sheilded box only. Pls suggest any material comes which can be pasted inside the audio system box to eliminate the RF entering into audio system.
Or any other differential amplifier will u suggest beofre the micrphone signals enters into the Audio system. In our audio system SSM2166 is the front end stage.
Thanks & Regards,
Naveen S
Dear Mr.Bob,
Mr.Bob, thanks for ur reply and showing interest in this problem.
Here in our system the MIC-HI & MIC-LO lines are given to a transformer which is a centre tapped one. And the secondary of the transformer is connected to Pin.no.7 (IN+) of SSM2166. And other end of secondary of the transformer is connected to pin no.6 (IN-) through Resistor and capacitor.
So, i will try to connect 220pF in b/w pin no. 6 & 7. It is an VHF AM transceiver antenna is near by to the audio system. And our audio system is in a sheilded box only. Pls suggest any material comes which can be pasted inside the audio system box to eliminate the RF entering into audio system.
Or any other differential amplifier will u suggest beofre the micrphone signals enters into the Audio system. In our audio system SSM2166 is the front end stage.
Thanks & Regards,
Naveen S
