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Part Number: LM4875
Hello there,
I am using LM4875 amplifier for 1W @8ohm speaker and providing a 5V supply with a booster.
As a audio input I have connected MIC. When I speak something it is drawing about 380mA average current.
Can you tell me what…
Part Number: LM4875 Dear Engineers，
LM4875 can change the gain by controlling the voltage of DC Vol foot.According to the datasheet, DC Vol pins a sliding rheostat to control the voltage.
What should I do if I control the volume with two volume buttons…
Part Number: LM4875 I am having an issue with applying the LM4875 in my design. I using the standard application schematic and am noticing
that with NO input drive and the gain control (external DAC driving pin 4) set to about 3V (positive gain), the…
Part Number: TAS2505 Other Parts Discussed in Thread: LM4875 , Hi expert,
Customer using our TAS2505 to drive 1W speaker, but the output sound has obvious noise which is not acceptable compared with LM4875. By changing gain smaller the quality will be better…
Other Parts Discussed in Thread: LM4875 , LM4865 Hi - what is the difference between the LM4865 and the LM4875 (looking at the SOIC versions of both). I have checked the datasheets for both and they look to be identical parts, although one is cheaper than…
Hi everybody. I don't want to create next thread with the same problem:
I'm trying to use this chip to my dsb modulator (because has dc gain regulation and bridge mode). Fortunately I started tests first :)
I have to confirm this problem. This…
Other Parts Discussed in Thread: LM4875 Hello, all !
I attached schematic file and datasheet about audio codec and speaker of attached schematic.
Please, Review attached schematic.
And, I have a question; I want to not HP_SENSE of LM4875. So, How can…
Hi, Polly,
I could only find this voltage-controlled amplifier:
http://www.ti.com/product/VCA810?qgpn=vca810
In addition, there are some audio amplifiers that have volume control through DC level, please see the suggested devices below:
http://www.ti…
Hi Jtronix,
You could have a look at the following devices: LM4865 and LM4875. These devices comply all the requirements.
Best Regards
José Luis Figueroa
Audio Applications Engineer
