Part Number: LM4670
Dear Team,
I am using LM4670SD/NOPB in my design.The IC is working at 5V Supply.
This IC requires an 8 Ohm speaker.
My first question is,
In that case do the lines Vo1 and Vo2 needs a differential impedance of 8 Ohm(Each line…
Part Number: LM4670
Dear Team,
Below is the block diagram of my first design using an audio power amplifier.
The input to the audio power amplifier comes from an SC200 module by Quectel.
The output of the PA is connected to a speaker .
I have couple of questions…
Part Number: TAS2521 Other Parts Discussed in Thread: LM4670 , TPA2011D1 Hello,
I am trying to design a circuit using the TAS2521IRGET speaker amplifier with the LM4670SD/NOPB power amplifier.
In a previous design, we successfully used a circuit based only…
Part Number: LM4670 Team,
Could you help review the layout showing as below?(Cs:Power supply bypassing cap)
And could also let me know why we suggest tantalum cap?
Roy
Part Number: LM4670 I am having a similar issue as described in http://www.ti.com/lit/ds/symlink/lm4670.pdf . We are using a different topology (figure 30 in the datasheet) but also have output capacitance for EMC mitigation purposes. Was a resolution…
Part Number: LM4670 Other Parts Discussed in Thread: TPA2038D1 , TPA2029D1 , TPA2017D2 Hi Team,
Excuse me. I'm not familiar with audio amp. Do we have next gen part of LM4670? Because LM4670 is old part, customer would like to change newer part.
…
Part Number: LM4670 Hi Everyone.
I have designed PCB based LM4670SD/NOPB datasheet, for more information please see attached file.
My MCU can communicate, read and write to LM4670, but my speaker can't output Sound.
Everyone can help me detect my …
Hi Tony,
It seems the LC filter may be oscillating due to the high-impedance input of the LM4670 amplifier's input. Filters are usually designed based on load R to determine the Q factor. I would suggest testing by driving the speaker directly from…
Rushi,
Can you please provide an email address or send a message to me at: ivan.salazar@ti.com
I'm working on getting a test setup for LM4670, perhaps we can compare with the production test board. However I'd like to follow up on this off-line and set…
