https://e2e.ti.com/support/audio-group/audio/<p style="display:none;">blank</p>en-USTelligent Community 13https://e2e.ti.com/support/audio-group/audio/f/audio-forum/1693603/tas5830evm-output-voltage/6524654Thu, 29 Oct 2026 07:29:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:08709459-6729-4aeb-a1f6-9378dd5fffccWenbin Li1this chip can support class-H, but if you use EVM and use the external PVDD. please follow the HW instructions as follows. Br, Wenbinhttps://e2e.ti.com/support/audio-group/audio/f/audio-forum/1693603/tas5830evm-output-voltage/6524612Thu, 29 Oct 2026 06:28:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:d16249fe-d071-4ebc-af5e-83e26b2bab7eJeff YANGHi Wenbin, But it can&#39;t support smart AMP, class-H algorithm, right? thanks! Jeffhttps://e2e.ti.com/support/audio-group/audio/f/audio-forum/1687049/mspm33c321a-q1-need-official-sdk-for-mspm33c321a-q1-mcu-64pin-part/6524607Thu, 29 Oct 2026 06:12:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:a97cbecc-c7d9-4389-8b22-29fbd421737bPrasanna Melagiri ChandrappaThank you Benedict! Do we have any script that will send the binary to target HW via UART to perform standalone SW update? Thanks and Regards, Prasanna.https://e2e.ti.com/support/audio-group/audio/f/audio-forum/1693414/tlv320dac3120-driver-support-required-for-tlv320dac3120-audio-playback-on-qcs615/6524605Thu, 29 Oct 2026 06:11:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:4f952de6-c148-41e2-b217-d2fba64ba777Niranjan Holalu YogendraCould you try using with the below as compatible string and try to use it directly? ti,tlv320dac3100 Documentation/devicetree/bindings/sound/ti,tlv320dac3100.yamlhttps://e2e.ti.com/support/audio-group/audio/f/audio-forum/1690145/tpa3131d2-tpa3131d2-design-issue-support/6524538Thu, 29 Oct 2026 04:55:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:4fb58fbe-ee77-4e17-bf26-bfa538af488aWenbin Li1Hi Andy, In general, you have resolved the two issues by below method: 1 the noise is caused by the GND, after break the audio GND and normal GND, the noise improves. in fact, you can add a inductor to check for the performance too. 2 pop noise is resolved by power on control sequency. I will close this thread. if you still have further questions, you can reopen or create a new one. thanks. Br, Wenbinhttps://e2e.ti.com/support/audio-group/audio/f/audio-forum/1693603/tas5830evm-output-voltage/6524534Thu, 29 Oct 2026 04:51:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:5c6358d7-42ad-4b7d-bd4f-d5127b1d6a86Wenbin Li1Hi Jeff, the 21V power rail is limited by the on board boost IC LM5155, it&#39;s not the limitation of TAS5830. TAS 5830 can use 30V pvdd. if you want to test higher PVDD on TAS5830EVM, please use external PVDD mode. Br, Wenbinhttps://e2e.ti.com/support/audio-group/audio/f/audio-forum/1693414/tlv320dac3120-driver-support-required-for-tlv320dac3120-audio-playback-on-qcs615/6524533Thu, 29 Oct 2026 04:50:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:3ddbff1c-70ae-4047-8dbf-0df2bd41246esanthoshkumar NHello Garret, Thank you for your response. We look forward to your update. Thanks and Best Regards,https://e2e.ti.com/support/audio-group/audio/f/audio-forum/1690145/tpa3131d2-tpa3131d2-design-issue-support/6524481Thu, 29 Oct 2026 03:23:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:57ee1f71-c288-430b-926b-0ab13910415fAndy LiuHi Wenbin, Regarding Issue 1: After removing R123, the issue improved significantly. However, a very faint sound can still be heard during the boot-up process. I observed that the mainboard produces the same sound, even if it is very subtle. It seems that this noise is transmitted through the mainboard power supply to the daughterboard and then amplified by the amplifier. Regarding Issue 2: Changing AC22/AC23 from 100&#181;F to 1&#181;F or 0.1&#181;F did not resolve the issue. Based on our experimental results, this problem stems from the timing requirements of the amplifier. Extending the MUTE delay to comply with the following recommendations resolves the issue. ================================================================ Startup sequencing. Apply power, de-assert SDZ while holding MUTE asserted, wait ~60 ms for the internal bias/common-mode voltage to settle, then de-assert MUTE before audio is applied. This 60 ms SDZ-to-MUTE delay eliminated the pop in a previously reported case 1 . Hold SDZ low during power-up until the input signals are stable, which also avoids nuisance DC-detect faults ================================================================ Thanks, Andyhttps://e2e.ti.com/support/audio-group/audio/f/audio-forum/1693248/tas67534-q1-sampling-frequency/6524459Thu, 29 Oct 2026 02:49:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:700ccabe-5745-49a1-a833-5fb7d2c16029kenji gemmaHello, Dylan-san, Thank you for your continued support. We appreciate your cooperation. Thank you for your reply. Since this information wasn&#39;t included in the script for the previous prototype silicone sample either, we asked about it. We understand that, for some reason, it is necessary to switch from the automatic PLL clock configuration to the manual PLL clock configuration. As you mentioned, if it is absolutely necessary to follow this script, it would be helpful if you could include that information in the datasheet or supplementary materials. Perhaps we&#39;re not reading the datasheets correctly. As things stand, there&#39;s a high likelihood that we&#39;re missing necessary information. Although it&#39;s rare, there are occasional cases where the script isn&#39;t applied. We understand that the TAS67524-Q1 has automatic PLL clock configuration, so we believe there is no issue. This does not apply to this device. Next, we plan to evaluate Hi-Res audio. We plan to use a sampling rate of 96 kHz. The bit depth will be 24 bits. We will play back signals with high frequencies of 20 kHz or higher. If you have any points to note or advice, please let us know. Best Regards, Kenji Gemmahttps://e2e.ti.com/support/audio-group/audio/f/audio-forum/1693218/tas6424-q1-mute-delay-time/6524448Thu, 29 Oct 2026 02:31:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:c01ab7cb-064a-45b7-9d95-a8e47f886649JINKAI CAIDear Dylan Yao According to the datasheet, muting via I2C should take less than 30 clock cycles (under 0.68 ms), and muting via the hardware (HW) pin should be even faster. Is my understanding correct? Best regards Cai Jinkaihttps://e2e.ti.com/support/audio-group/audio/f/audio-forum/1693603/tas5830evm-output-voltageThu, 29 Oct 2026 02:13:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:e383f637-6181-4b74-a653-bd71903f004eJeff YANGPart Number: TAS5830EVM Other Parts Discussed in Thread: TAS5832 , LM5155 , TAS5830 Hi, TAS5830EVM mentioned class-H maximum output voltage is 21V, does is possible to change setting to adjust to 30V output? Or any other class-H or Class-D can support ? I find TAS5832 but not sure is it suitable for this design. Thanks! JeffTAS5830TAS5830EVMLM5155Home theater &amp; entertainmentTAS5832https://e2e.ti.com/support/audio-group/audio/f/audio-forum/1693548/opa1677-help-choosing-resitors-for-buffered-voltage-reference/6524166Wed, 28 Oct 2026 20:06:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:dcf15672-db7d-41c1-8328-15b1c577aba4Nuno Maiounderstood!!!! I have madw the math after I asked and it came down to 0.25 second and that sounds pretty good. Finally, the last question, and very important, with the application of the buffer could this help eliminiate the crosstalk on the Mixer/Blend/Pan channel? I understand that when it&#39;s wired with the two 10k resistors and the big 220uf capacitor, the capacitor is making all the work of keeping the Blend channels separated when fully panned to either side (there is alittle bit of leakage as it is but not horrible). Adding a buffer to this virtual ground, would it, in theory, keep this same channel separation or even improve on it?https://e2e.ti.com/support/audio-group/audio/f/audio-forum/1693548/opa1677-help-choosing-resitors-for-buffered-voltage-reference/6524143Wed, 28 Oct 2026 19:51:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:7546f510-0dd6-429a-b641-728eba311111Art KayNuno, If you reduce the resistors to 10k and keep the capacitor at 10uF, the charge time will decrease to 0.25s. I think this is a very reasonable start up time. The AC cutoff frequency for the noise will increase to 3.18Hz which is still below the lower 20Hz audio range, so I don&#39;t think noise is really a problem. Since you are not battery powered I think the 10k makes sense. Best regards, Arthttps://e2e.ti.com/support/audio-group/audio/f/audio-forum/1693548/opa1677-help-choosing-resitors-for-buffered-voltage-reference/6524131Wed, 28 Oct 2026 19:41:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:8c42e403-84eb-4b9f-a98f-a5e4eec093d1Nuno MaioHi Art. Yes, that is how it is wired!!! The circuit is not battery powered, it is powered with external power supply. The circuit has about 6 opamps (opa1678&#39;s) and whenever all of these need to be conected to a &quot;virtual ground&quot; they connect to this vref point. At the noment, the circuit is designed with a passive vref with 10k resistors but a massive 220uf capacitor (it is needed because I have a Blend/Pan circuit in it where the Potentiometer&#39;s middle lug is connected to Vref. The large capacitor is filtering the crosstalk). I thought that reducing the capcitor and increasing the resistors would keep the noise filtering high, and the capacitor being smaller would reduce charging time (charging time is an issue due to switch pop noise). And by adding the buffer to this &quot;virtual ground/voltage reference&quot; it could help decrease crosstalk and also switch pop noise. Could I get away with using 10k resistors instead and keeping the capacitor as 10uf, or would it still be very big for charging time?https://e2e.ti.com/support/audio-group/audio/f/audio-forum/1693548/opa1677-help-choosing-resitors-for-buffered-voltage-reference/6524124Wed, 28 Oct 2026 19:28:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:df69e900-680a-4fb3-9d20-1b546507d38aArt KayNuno, I believe that you are implementing the circuit below. I am not sure specifically what your concern with the 100kΩ resistors is. Listed below are potential issues or comments on the large value for this circuit. Large resistors generate a lot of noise. However, the 10uF and 100k Ω resistance form a 0.318Hz filter (f = 1/(2*pi*50k*10uF). Note the two 100k resistors are effectively in parallel. This effectively filters out any the noise for audio frequencies, so I don&#39;t see this as a concern. The 100k Ω resistor and 10uF capacitor have a very long charge-up time (t = 5*R*C = 5*50k*10u = 2.5s. I think this start up time could be considered an issue, but if you are using it in a guitar effects pedal I doubt the 2.5s delay is really an issue. Large input resistors can cause an offset voltage when the op amp bias current is applied to them. However, this is a CMOS device and the bias current is very low. Also, offset is not usually a problem for audio applications. You didn&#39;t say what the output is connected to. If it is connected to a capacitor, you will need to stabilize the circuit. Let us know if the output connects to a capacitive load and we can help with that. Assuming your circuit is battery powered, the 100k divider is probably a good idea as it will draw minimal current. e2e.ti.com/.../opa167x-buffer.TSC Best regards, Arthttps://e2e.ti.com/support/audio-group/audio/f/audio-forum/1692995/tlv320aic3104-output-channel-flc-issue/6524125Wed, 28 Oct 2026 19:28:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:0325093b-8ee9-49d2-b091-14531840faa9Garret GodfreyHi Falguni, HPLCOM which drives FLC is an output driver by default, not a ground reference. It can also be configured as VCM output which is set by default to 1.35V which seems to be what you observe. To configure as a single-ended output, use the following register write: Best, Garrethttps://e2e.ti.com/support/audio-group/audio/f/audio-forum/1693021/tad5242-tad5242-elevated-noise-floor/6524114Wed, 28 Oct 2026 19:16:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:34a02910-34b4-4d95-90ce-8505c8075cf0Garret GodfreyHi Frederik, The clocks and voltages look good. What bandwidth are you measuring? In order to achieve the 120dB (-111.7dBu) spec, you must measure with a A-wt filter across a 20Hz to 20kHz bandwidth per the datasheet: I confirmed this on EVM: Without these filters, I observe close to your measurement. Best, Garrethttps://e2e.ti.com/support/audio-group/audio/f/audio-forum/1693548/opa1677-help-choosing-resitors-for-buffered-voltage-referenceWed, 28 Oct 2026 18:29:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:a2d3bdd0-b582-4fa2-b72e-c8d6395de19aNuno MaioPart Number: OPA1677 Other Parts Discussed in Thread: OPA1678 I am looking into using the OPA1677 as a voltage follower for the Voltage reference on a guitar clean preamp pedal. The idea is to use a buffered vref signal to distribut throughout the whole circuit. At the moment I am planning to use 100k resistors for a split Vref with a 10uf filtering capacitor. My question is if the value for this resistors is too high for the opa1677. Can I use these values or is it advisable to reduce the value of the resitors?OPA1677OPA1678Portable Electronicsguitar preamphttps://e2e.ti.com/support/audio-group/audio/f/audio-forum/1693414/tlv320dac3120-driver-support-required-for-tlv320dac3120-audio-playback-on-qcs615/6524045Wed, 28 Oct 2026 18:08:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:b6e819af-8a46-4fa7-9d87-3c9065483e07Garret GodfreyHello, I believe this driver supports the TLV320DAC3120. I have forwarded this to our Linux expert for detailed comment. Thanks and Best, Garrethttps://e2e.ti.com/support/audio-group/audio/f/audio-forum/1693236/tac5112-opa4992-and-tac5112-dc-coupled-input-and-output-stage/6524043Wed, 28 Oct 2026 18:06:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:ad7dfba1-8370-4880-9b03-2c2e5e65c8e0Garret GodfreyHi Loki, We do not have any published front-end circuit for this codec. I suppose MICBIAS can be used as VCOM, assuming it draws &lt;5mA of load current. This front-end looks okay as long as the input to the TAC5112 stays within the recommended operating conditions. If you want a more specific review of this circuit, please create a new thread, replacing TAC5112 with OPA4992 as the selected device. Thanks and Best, Garret