Audio forum - Recent Threads

SA5532A: Cross-sectional diagram SA5532ADR

Daisuke Nomura — Sat, 26 Sep 2026 06:25:57 GMT

Part Number: SA5532A

Could you prepare the diagaram?

Thanks and best regards,

Daisuke Nomura

TLV320DAC3100: EMI filter for headphone output

Peter Barnes — Fri, 25 Sep 2026 13:02:15 GMT

Part Number: TLV320DAC3100
Other Parts Discussed in Thread: TPA6166A2

Hello,

Is there a recommended EMI filter for the headphone output of the TLV320DAC3100?

The TPA6166A2 datasheet recommends a pi filter with 33pF shunt caps, and a 22R @ 100MHz ferrite bead.

Is it recommended to use such a filter with the TLV320DAC3100?
Should the 100uF dc blocking caps go before or after the filter?

JHere's my work-in-progress schematic, in case you have any comment:

TAC5142EVM-K: TAC5142EVM-K configuration

Annika Evers — Fri, 25 Sep 2026 11:56:16 GMT

Part Number: TAC5142EVM-K

Hello,

I'm trying to get the TAC5142EVM-K into operation. I connected it via the AC-MB with my PC, but both audio directions are not working.

Which configuration of the MD pins do I need to select to operate the board with the AC-MB? This seems to be not documented in the user guide. Is there any additional documentation for the first steps with this board available?

PCM1789-Q1: PCM1789-Q1 - Evaluation Board & Reference Design

Thanga Prabu Suyambukasi — Fri, 25 Sep 2026 09:06:19 GMT

Part Number: PCM1789-Q1

Hi Team,

We’re planning to use the PCM1789-Q1 in our design and would like information on the available evaluation board, including its part number, as well as any relevant reference design documentation.

Could you please share these details?

Thank you.

PCM1863: PCM1863 schematic view

switch — Fri, 25 Sep 2026 06:21:38 GMT

Part Number: PCM1863

Hi ti team,

The new project is using the PCM1863. Please help check if there are any issues with the attached schematic. Thanks!

SRC4382: SRC4382 schematic view

switch — Fri, 25 Sep 2026 06:19:03 GMT

Part Number: SRC4382

Hi ti team,

The new project is using the SRC4382. Please help check if there are any issues with the attached schematic. Thanks

PCM5100: PCM5100 Schematic Review

switch — Fri, 25 Sep 2026 06:16:15 GMT

Part Number: PCM5100

Hi ti team,

The new project is using the PCM5100. Please help check if there are any issues with the attached schematic. Thanks

TS3A5018: TS3A5018 Schematic Review

switch — Fri, 25 Sep 2026 06:11:37 GMT

Part Number: TS3A5018

Hi ti team,

The new project is using the TS3A5018; please check the attached schematic for any issues. Thanks!

TPA3116D2: TPA3116 Schematic Review

switch — Fri, 25 Sep 2026 05:49:50 GMT

Part Number: TPA3116D2

Hi ti team,

The new project is using 2PCS TPA3116. Please help review the attached schematic for any issues. Thanks!

PCM4104: PCM4104 Schematic

switch — Fri, 25 Sep 2026 05:43:16 GMT

Part Number: PCM4104

Hi ti team,

A new project is using the PCM4104. Please help check the attached schematic and the three-channel output filtering circuit of the PCM4104 for any issues. Thanks!

TAS6684-Q1: Pop-free shutdown with RTLDG pilot tone enabled

Jay Coggin — Fri, 25 Sep 2026 01:51:05 GMT

Part Number: TAS6684-Q1

We are using the TAS6684 in a design and have started bringing up realtime load diagnostics. We have open-load and shorted-load detection enabled and working correctly. However, we noticed that since enabling RTLDG on all channels in the RTLDG_CONTROL0 register, we now have an audible pop in our power down sequence that was previously silent.

It seems the new pop is due to the pilot tone generated for RTLDG SL/OL detection. We are following datasheet recommendations for muting and powering down the amps, but it seems the mute controls do not mute the pilot tone. We also tried disabling all channels in RTLDG_CONTROL0 before and after mute, with various delays, etc., but everything we tried has an audible pop.

What is the recommended procedure to mute the device while RTLDG SL/OL is enabled so that we eliminate or minimize pops/clicks?

We did find the register map of book 0x8c in another thread with a "Pilot Tone Gain" and "Pilot Tone Alpha" parameter mentioned. We tried gradually ramping the pilot tone gain down from its default value of 0x200000 to 0 by 0x10000 each time with an 8ms delay in between each decrement. We were able to eliminate the pop completely, but it takes about 300ms. Increasing the step or decreasing the delay from there starts to introduce pops. We couldn't figure out the translation or scheme for the Alpha timing constant, but it seems this is what we really want to tune so that we can just set the gain to -inf dBFs and let the part take care of the ramp as fast but smooth as possible.

For emergency shutdowns (such as imminent loss of TDM clocks), we need to be able to mute without pops/clicks within about 21ms of indication. We can achieve that with the possible MUTE ramp rates for source audio. Can we achieve that for the pilot tone?

TLV320AIC3262: VBAT unused: ground, float, or cap-only

noam eshet — Thu, 24 Sep 2026 11:52:28 GMT

Part Number: TLV320AIC3262

Hi,

my TLV320AIC3262 design doesnt use VBAT, do i leave VBAT ground, float, or cap-only ?

Thanks

PCM1822: PCM1822: single-ended DC line inputs, specs & how-to

Christian Erle — Thu, 24 Sep 2026 11:32:41 GMT

Part Number: PCM1822
Other Parts Discussed in Thread: PCM6120-Q1

Dear experts,

I'm using the PCM1822 with single-ended inputs.

As it turns out, pulling IN1M & IN2M directly to GND was not a good idea, it's working, but on INxP the signal needs an offset of 0.5V, not the expected AVDD/2, in my case 1.65V from 3.3V supply.

Checking the datasheet and the EVK-pdf once more, I did not find any hint on how to connect to the PCM 1822 in single-ended mode.

So, how can I do that, hopefully to connect a signal with a DC of AVDD/2 ?

Thanks in advance.

TAS6511-Q1: Linux driver for TAS6511

Roy Chou1 — Thu, 24 Sep 2026 00:57:36 GMT

Part Number: TAS6511-Q1

Hi Team,

I want to follow up the tread. Do we release the Linux drive for TAS6511?

https://e2e.ti.com/support/audio-group/audio/f/audio-forum/1639106/tas6511-q1-tas6511-linux-bsp-driver-code?tisearch=e2e-sitesearch&keymatch=TAS6511%20Linux%20Driver#

Regards,

Roy

TPA2012D2: Recommended Resistor and Capacitor Values for High-Pass Filter

Kevin Huang8 — Wed, 23 Sep 2026 17:01:28 GMT

Part Number: TPA2012D2

Could you please assist in reviewing the TPA2012D2RTJR circuit as shown in the attached file? The front end is the ALC888S CODEC, with its SURR PORT connected to the AMP. Please review whether the circuit design is OK, especially regarding whether any resistor or capacitor values need to be adjusted. Thank you!

TAS6501-Q1: Schematic review

Bingyun Yang — Wed, 23 Sep 2026 15:44:39 GMT

Part Number: TAS6501-Q1

Hi team,

Our customer has just completed the schematic design for digital cockpit with our TAS6501-Q1. Would you kindly help us to check if there are any design flaws with our TAS6501-Q1 or its peripheral circuitry?

I have attached the schematic. Thanks!

TAS6501-Q1.pdf

Best Regards,
Bryn Yang

TLV320DAC3100: Split ground plane

Peter Barnes — Wed, 23 Sep 2026 15:36:09 GMT

Part Number: TLV320DAC3100

Hello,

Can you confirm if the TLV320DAC3100 should have a solid ground plane or split ground plane. The datasheet recommends a split plane, joined "in a few points". The eval board has a single, solid ground plane.

Which is TI's recommended approach?

TAS3251: PFFB implementation

Nicolas Bouquet — Wed, 23 Sep 2026 14:26:26 GMT

Part Number: TAS3251

Hello,

After reading the dedicated app note and carrefully watching the EVM layout, I still have some questions about the PFFB implementation.

TAA5412-Q1: AGC Configuration and Parameter Guidance Document

user5883945 — Wed, 23 Sep 2026 13:41:42 GMT

Part Number: TAA5412-Q1

Dear,

Do you have AGC Configuration and Parameter Guidance Document?

TAA5412-Q1AGC function configuration, customer's current configuration is not effective. The configuration provided by TI is also ineffective when connected to EVM. The datasheet also states that this configuration customer needs to be used for configuration, but the datasheet can only see the default configuration without explaining how to configure it. Currentlly, customer can only set a fixed digital gain. May I ask if there are specific reference instructions for configuration enable and parameters?

the attachment seems likely for tlv320ADCx140.

sbaa401a.pdf

DRV135: DRV135 - O/P Line-out load range

Thanga Prabu Suyambukasi — Wed, 23 Sep 2026 11:41:41 GMT

Part Number: DRV135

Hi Team!

Could you please provide the Line-out load range for the DRV135 audio line driver, including the minimum typical and maximum load conditions? We were unable to locate this information in the datasheet.

Thanks & Regards,

Thanga Prabu

TLV320AIC3104: Can all four TLV320AIC3104 headphone outputs be used independently and simultaneously?

Falguni Sharma — Wed, 23 Sep 2026 11:26:46 GMT

Part Number: TLV320AIC3104

Hi Team,

I’m using the TLV320AIC3104 and its four headphone outputs: FLP, FRP, FRC, and FLC.

Can these four outputs be driven independently and simultaneously? If yes, is there any possibility of internal crosstalk or signal leakage between these outputs when they are used at the same time?

Thanks!

TWL1103T-Q1: Inquiry regarding Power Consumption and Thermal Dissipation for TWL1103T-Q1

HILA M — Wed, 23 Sep 2026 07:59:21 GMT

Part Number: TWL1103T-Q1

Hello,

I am designing our power budget using the TWL1103T-Q1 and would appreciate some clarification regarding its power and current consumption specifications.

Could you please address the following points:

Typical & Maximum Current Consumption: Could you please provide the exact typical and maximum operating current consumption values for each supply rail during active voice-band operation, as well as in power-down mode?

Dissipation Rating vs. Operating Power: We noticed the Dissipation Rating Table lists a power rating of 680 mW , whereas normal active current suggests actual power consumption is only a fraction of that (around a few tens of milliwatts). Could you please briefly clarify how this high thermal rating relates to the actual operating power dissipation, and confirm that our power supply sizing should be based on the actual operating current rather than the thermal dissipation limit?

Thank you for your assistance.

Best regards,
Hila

TAS5832EVM-DOC-CERT: TAS5825-SW Access Request Has Been Pending Since September 16

ZHIJIE GUO — Wed, 23 Sep 2026 02:36:41 GMT

Part Number: TAS5832EVM-DOC-CERT
Other Parts Discussed in Thread: TAS5825-SW

Hello TI Support Team,

I submitted an access request for TAS5825-SW on September 16, 2026, but the status is still showing “Pending.”

Could you please help me check the current status of my request? I need this software for development and evaluation of the TAS5825 device.

If I need to provide any additional information or complete any further steps, please let me know.

I have attached a screenshot showing the request status. Thank you for your assistance.

Best regards,
Zhijie

TLV320AIC3204: Pops on startup

Joe454 — Tue, 22 Sep 2026 20:05:53 GMT

Part Number: TLV320AIC3204

I'm having a hell of a time with pops on startup. This happens if I use the line output or headphone output. Relevant schematic:

Any ideas what's happening?

TAC5112-Q1: TAC5112-Q1 - ASIL LEVEL Details Required

Thanga Prabu Suyambukasi — Tue, 22 Sep 2026 18:59:39 GMT

Part Number: TAC5112-Q1

Hi Team!

Could you please provide the ASIL Level details for CODEC IC : TAC5112-Q1

Thanks & Regards,

Thanga Prabu S