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Audio Amplifiers

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Class D
Related Posts

  • Forum Post: Toko Inductor Alternatives

    Andy Lucas
    Hi, I'm looking for some suggestions for widely available (Digikey etc) inductors that are suitable replacements for the Toko 11RHBP series, suggested by TI. I'm looking for a 22uH inductor for a TAS5706a design. TI seem to recommending a lot of Toko parts that aren't particularly easy...
    on Jan 10, 2011

  • Forum Post: TAS5613 Inductor choice

    Andrea Campanozzi
    Hi All, We're designing a power output stage with the TAS5613. We've built a prototype board basing on the schematics of the TAS5613 evaluation board but i cannot find the toroidal inductor (toko C3B-A0336). We tried replacing with http://docs-europe.electrocomponents.com/webdocs/002b/0900766b8002b270...
    on Jan 5, 2011

  • Forum Post: TAS5713 in PBTL connection

    DJ
    I am using the TAS5713 in a PBTL configuration and had requested TI tech support insofar as the proper electrical connections. I received the attached drawing showing the connections. I have the TAS5713EVM board which is wired as 2 BTL (stereo) outputs and have noticed that the PCB layout for the boost...
    on Mar 5, 2011

  • Forum Post: Heat sink question on TAS5630

    Bruce Morley
    We are working on a mechanical design for an audio company and they are using the TAS5630DKD. Their preliminary design idea is to use the aluminum enclosure to act as the heat sink by mounting the chip such that the heat slug comes into contact with the bottom enclosure panel (this would be in place...
    on Apr 16, 2011

  • Forum Post: Re: How to modulate a 60kHz signal with voice?

    David Harris73170
    Many thanks Don. I suspected they might work. Which devices lend themselves to breadboarding for evaluation? I can do circuit boards and dips but surface mount is harder. Are there any 'antiques' in the family that might work? I'm building a 555 PWM right now but that's pretty crude....
    on May 4, 2011

  • Forum Post: TPA3125D2 instability / oscillation

    David Tiefenbrunn
    Hi, I am working with the TPA 3125D2 class D amplifier IC. I am having a difficult time getting the circuit to operate well. I have worked with a lot of audio amps over the years, but this is the first class D. The circuit is based on the Evaluation PCB, and mono / BTL configuration. There...
    on Mar 16, 2011

  • Forum Post: Headphone and SUB PWM outputs on TAS5706 TAS5716

    Nicholas D'Amato
    On the TAS5706 and TAS5716, which supply pins (power and ground) are used internally to supply the headphone and subwoofer PWM outputs? The reason for this question is that we want to include countermeasures in our schematic for suppressing TDMA noise. Thanks and Best Regards, Nick D.
    on Jun 7, 2011

  • Forum Post: TAS5713 - How to get the biquad values from the TAS57x GUI?

    Thomas Arens
    Hi, I am planning to use the TAS5713. I would prefer not to buy the evaluation board. The TAS57x GUI is great for configuring the filters, but without the evaluation board I am not able to get the biquad values from the software. Is there a way to get the biquad values from the GUI? (I tried version...
    on Jul 12, 2011

  • Forum Post: Class-D Audio Amplifier Options

    Bret55761
    Hi, I have a product that uses the TPA032D03 10-W Mono Class-D Audio Power Amplifier IC. This chip is obsolete according to my vendors, and we are looking at modifying our design to support a new chip that will continue to be available in the future. Does the TPA032D03 have a suitable replacement...
    on Aug 19, 2011

  • Forum Post: Re: TAS5713 "click" on audio startup

    DJ
    Don, I figured you might be on vacation without your laptop or iPhone ;-). This has not been resolved, albeit we chose to implement a temporary band-aid on the problem not putting the PA chip in shutdown when audio is not playing. This means that our power consumption is about doubled when the...
    on Sep 15, 2011

  • Forum Post: Re: TAS5713 "click" on audio startup

    DJ
    Tuan, We tried BD modulation and the problem is gone! Now, I have a couple of questions: 1. Why does this fix the problem? 2. We have the recommended capacitor on the SSTIMER pin for AD modulation. If this part is left on the boards, are we going to have problems with running BD modulation...
    on Sep 27, 2011

  • Forum Post: Re: shutting down half of TAS5613

    Anthony Smith
    The application is a battery backed amplifier for emergency use, I dont want to switch between dual BTL and PBTL; I want to lay the board for PBTL only, and omit the filter components on C+D when we want the low power solution; As it is battery powered, I wanted the lowest idle power, and the option...
    on Oct 9, 2011

  • Forum Post: TAS5710 asserts FAULT when exiting shutdown

    Paulo Marques
    I work for a Portuguese company that is building a device with a couple of small speakers that should need 2 x 3W of output power from the amplifier. The nominal power supply should be around 12V, but we expect some fluctuation on the input voltage, so having a closed-loop amplifier would be a plus....
    on Oct 11, 2011

  • Forum Post: TAS5713 "click" on audio startup

    DJ
    We are using the TAS5713 digital audio amplifier in a product. The chip is configured in PBTL mode for a single channel audio output. We have working product/firmware and just completed a pre-production build of 110 boards. During production test of the boards, we discovered > 10% of the boards have...
    on Aug 25, 2011

  • Forum Post: TAS5630’s problem about OTW and output in BTL mode

    James Wang69587
    Hello, there. It ’ s been 5 months since I posted the questions last time about the issue about the TAS5630.The TAS5630 project is operated intermittently .Until last month I can devote my minds to the board. I ’ ve made that each channel can output 300W RMS. But and the question comes...
    on Sep 29, 2011

  • Forum Post: Pop/Click on power off of a TPA2006D1 .

    Matthew Byrd
    We make Active noise reduction modules for headsets. I recently replaced our old BTL chip with your class D. Everything is fine except for a violent click on power off. The circuit is comprised of a mic preamp into a lead/lag filter that is buffered on output through a unity gain opamp. The filter and...
    on Jan 25, 2012

  • Forum Post: TPA3111D1, TPA3112D1 over current protection threshold

    Rowan Smales
    Hi, I am using the TPA3111D1 to drive a predominantly inductive load. The design is based upon the EVM board, with an LC filter, and with -SD and -FAULT linked for automatic recovery. On the datasheet there is no figure for the current threshold at which the over current protection kicks in on this...
    on Mar 6, 2012

  • Forum Post: Re: TAS5631DKD2EVM and Input-USB Board 2 first test

    Christian Ngamy
    Thank you very much indeed for your answer. It walks pretty good. I have another question: - can i use both analog Input and SPDIF Input at the same time? I don't also understand the difference between both those two Inputs. - when i press RATE in the Input-USB board 2, i only get Fs...
    on Apr 11, 2012

  • Forum Post: Re: TAS5631DKD2EVM and Input-USB Board 2 first test

    Christian Ngamy
    Thank you very much indeed for your answer. It walks pretty good. I have another question: - can i use both analog Input and SPDIF Input at the same time? I don't also understand the difference between both those two Inputs. - when i press RATE in the Input-USB board 2, i only get Fs = 48 kHz or...
    on Apr 11, 2012

  • Forum Post: TAS5631DKD2EVM and Input-USB Board 2 first test

    Christian Ngamy
    Hello, I'm student. My School bought a TAS5631DKD2EVM with Input-USB Board 2 and it was given to me as project to understand how it works and make a documentation of them together in french, but I don't really understand how it works. I tried to do a first test with an oscillator instead...
    on Mar 20, 2012

  • Forum Post: TAS5630 2.1 application, channel separation problem

    Junpu Xu
    Hello experts, I am developing an amplifier in 2.1 system application by using TAS5630 IC. Everything works fine except the strange trouble of channel separations. My configurations of TAS5630 amp: -- Channel A & B are working in BTL mode, as subwoofer amplifier -- Channel C &...
    on Mar 14, 2012

  • Forum Post: TPA3125D2 and mono input?

    Theophile Poisson
    Hi, i would to use a TPA3125D2 as a output power guitar amp, but i have mono signal from the preamp, and i would to know if it's possible to drive the TPA3125D2 without audio balanced signal. I know that some chip (TPA3106D1 or TPA3112D1) are mono input, but dip package is easier to solder, and...
    on May 25, 2012

  • Forum Post: TPA3123D2 Still switching after shutdown

    KennyMillar
    Hi I have an intriguing issue with a TPA3123D2 Class D Audio Amp. The amp is one of 4 in total on a board. What happens is that the amp powers on and starts up perfectly. It plays music etc with no problems, great sound quality etc. The SHUTDOWN and MUTE lines into the chip are controller by a microcontroller...
    on May 16, 2012

  • Forum Post: TAS5630 3ohms load issue

    Jezequel Pascal
    Dear all, I am designing an amplifier with a TAS5630, intended to drive horn speakers. The speakers' compression drive units have an impedance of 6 ohms at lower frequencies. The amplifier is set in stereo BTL mode, with 2 speakers on each output, which results in 3-ohms loads. For the...
    on Aug 22, 2011

  • Forum Post: Audio Amplifier Question

    Daniel Hernandez
    Hello All, I inherited an old design that I’m looking to update. One of the things that I would like to update is an amplification circuit. Currently they are using an LM4951SD, as the heart of the circuit. They have a 60kHz square wave being turned into a 60kHz sine wave via a Capacitor Inductor...
    on Apr 3, 2012
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