Audio Amplifiers

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Audio Amplifiers

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  • Forum Post: Mono audio amplifier

    chethan kp
    Hi, I want to drive a speaker which is given in the below link http://www.dynavox-audio.de/media/products/0500023001246952919.pdf . Can you suggest a good mono audio amplifier to use for this ,, my input signal(to the amplifier ) is 20 to 25 KHz ultrasonic signal. regards chethan
    on Apr 20, 2011

  • Forum Post: low frequency response TAS5630

    bruno nunes
    hello, I have a customer that has a doubt about the frequency response of the TAS5630 at the following application: single-ended ( SE) , 2 ohm load . Currently they have a good frequency responce of 70 Hz to over 20 KHz [ board mounted with TAS5630 ] and they would like to work with lower frequency...
    on May 5, 2012

  • Forum Post: TAS5121 PWM input directly from MSP430 (without PWM processor)

    Trường Giang Mai
    Hello Texas! I would like to play a simple sound of drum and I have MSP430F2274 and TAS5121. Sound data is stored in flash of MSP430F2274. So, can i use PWM signal directly from MSP430F2274 to control TAS5121 without a PWM processor (such as TAS5026) ? Thanks! Mai Trường Giang!
    on May 12, 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: 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: TPA6130A2 and piezoelectric speaker

    Ivan Pivovarov
    Hello! I want to use one amplifier chip for sourcing both headphones and piezoelectric speaker. Is it possible to use TPA6130A2 for this purpose? I tried the following design (but without R6 and R7) and it happened that on plugging headphones a kind of overcurrent took place. The datasheet recommends...
    on Jun 1, 2012

  • Forum Post: TAS5602 setting

    Joe Lee
    Hi, I would like to know if it is possible to set TAS5602 as follow: 1 SE output = 2.5W 1 SE output = 2.5W 1 BTL output = 35W Thanks. Joe
    on Jun 26, 2012

  • Forum Post: power supply rating for audio amplifiers

    siva prasad2
    Hi, i am going to design a 200W @ 4Ohms audio power amplifier using LME49810,LME49811 or LME49830, i want to know how the power supply transformer(VA Rating) is caluculated and is there any particular calculations for the same. from the application notes by TI, i did some calculations up to DC bus...
    on Jul 2, 2012

  • Forum Post: OPA827: new release (redesign)? how can we identify the new version by the device marking? how can we order the new version?

    Hans-Rudolf Neukomm
    By using the OPA827 as voltage follower (G=+1, source connected to +IN via RC, R=1kOhm and 10kOhm, 22pF to GND, output connected to -IN), we detected an incredible amount of THD+N. The source signal is 3Veff at 20 kHz. Some days ago, we got new samples from TI who do not show the problem. In the following...
    on Jul 18, 2012

  • Forum Post: TAS5706B soft-stop and soft-start

    Giulio Grassi
    I'm using TAS5706B in a dual mono configuration, so I use only one channel in BTL configuration with two IC. Microcontroller update the DAP configuration even during music play, I can change DRC and Biquads. The input I2S signal has a fix sample rate of 192kHz. In order to do it correctly I implement...
    on Aug 24, 2012

  • Forum Post: LM48901

    shuo shen
    Is there a input current limit for the LM48901eval board? I can't find it in the LM48901 User guide.
    on Sep 11, 2012

  • Forum Post: PurePath Studio (Home Audio) - Hardware device not connected

    Tom Austad
    Hi, We have a set up of MC57xxPSIA with TAS5706EVM2 and want to use PurePatheStudio to tune the sound. In the start, we tried the pre-setup files included. We downloaded them and received the message: Build succeeded. But in Run mode, the message was: Hardware device not connected. We have...
    on Oct 31, 2012

  • Forum Post: TAS5102

    Amin Koohi
    Hi, I'm working on a project that needs to convert audio signal to pwm with 160KHz frequency using PIC microcontroller and then is amplification with TAS5102, now the point is can TAS5102 operate normally with input pwm frequency of 160kHz? as per the data sheet minimum pwm feq. must be 190KHz...
    on Nov 12, 2012

  • Forum Post: TPA3106 frequency response

    Moritz Bente
    Dear e2e Community, I've made an Amplifier design using the TPA3106 for powered Speakers and i have a bit trouble with the Frequency Response. My System is using a 19 V PowerSupply and i have tested also a couple of Inductors in the Output path. I've build 5 PCB's with all the same malfunction...
    on Jan 8, 2013

  • Forum Post: TAS5630B Heatsink Question

    Bernhard Waechter
    Hello! My question is about a TAS5630B Class D Chip in TQFP64 package. The datasheet says that the 2.2µF C60-C63 capacitors for decoupling the pvdd voltage needs to be as near as possible at the chip. It is also recommended to use at least 63V X7R ceramic types. Now the problem / question is:The...
    on Jan 31, 2013

  • Forum Post: LME49724 is a balanced audio op amp, correct?

    Eric Koester
    Hi, I want to know if the LME49724 is a balanced op amp similar to the Burr Brown INA163 and the THAT1570 ? With the INA163 and THAT1570, the input impedance is said to be set with resistors that are parallel to the + and - inputs of the op amp, rather than with a series resistors connected to the +...
    on Feb 25, 2013

  • Forum Post: TAS5706B driver

    Saurabh Patel
    Hi, I want driver souce for TAS5706b audio power amplifier chip. Thanks, Saurabh
    on Feb 28, 2013

  • Forum Post: LME49811 BoM

    Fabian Angerer
    Hi, I have a few questions about the LME49811 Audio Amplifier and I would thank you very much if someone can help me. :) 1) I looked at the datasheet and found the typical application circuit, but i dont found a bill of materials for this circuit because i would like to know what kind of darlingtons...
    on Mar 21, 2013

  • Forum Post: Multichannel Audio in a bus coach

    Karan Rai
    Hi I have a project wherein i need to wire 4 stereo channels playing different music in a bus with 32 seats. Each seat should have a module to select one of the 4 channels and listen to it by plugging headphones in a 3.5 mm jack on the seat module. We have built the music system with 4 stereo outputs...
    on Mar 24, 2013

  • Forum Post: Using TAS5086 with TAS5612A

    Gabrielius Klemas
    Hi, I've been trying to figure out what could be the easiest way of connecting the TAS5086 to the TAS5612A (in BTL mode). When in stereo BTL mode, the TAS5612A needs four inputs (A, B, C, D). How do I go about connecting them when TAS5086 gives only two outputs (PWM1, PWM2) when it's in 2...
    on Mar 29, 2013

  • Forum Post: RE: can anyone tell me how does this circuit work ??

    KIRAN KUMAR4
    Thanks Christoph Neuhaus . But could you tell me why the non-inverting terminal is to be provided with a voltage Vcc/2 ?? Does the combination R4,C3 &R5 works as an integrator ? If yes how would the output waveform be?
    on Apr 22, 2013

  • Forum Post: PGA2320 power up behavior

    Bo GAO2
    Hi, I'm designing a power amplifier which uses PGA2320/2311 as input attenuator. This device is controlled by a USB SPI bridge, and here is the question. What is the relationship between VA and VD? Can I power up VA without VD or vice versa? How will this device behave with VA but without VD? Will...
    on Apr 25, 2013

  • Forum Post: TAS5424A Over-Current Condition

    Ben Seaman
    Hi, We are using the TAS5424A amplifier in our hybrid stepper motor design. We have the amplifier DC coupled from a DAC and some op-amp filtering/differential amp. We set up the I2C registers as follows: * Clear the faults by reading the fault registers 0x00 and 0x01 i2c_amp_read_register(TAS5424A_I2C_ADDR...
    on Apr 25, 2013

  • Forum Post: TAS5706 Audio data verification

    Paul Lee
    Hi, How I verify that data is coming to TAS5706 is or not? What care should be taken for chip initialization and clocking the chip? How can we set TAS5706 as master codec? Thanks, Paul
    on Apr 27, 2013

  • Forum Post: 2x TAS5715 (for each channel) for 40W output power and I2S input

    B. R.
    Hello guys, We are planning to use a TAS5715 I2S-Audio-Amplifier, but we need an output power of at least 40W per channel. Please let us know if the following way would lead us to success: The source is a VS1053 (MP3/WMA-decoder) from VLSI. Its output is an I2S signal with 32*fs (!!!), 16-bit. To achieve...
    on Apr 29, 2013
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