Analog and audio

Hello, I have a guitar amp Laney LA65C where the output amp is faulty, it consists of a TDA7294 IC, I put in a new TDA7294 but it exploded as soon as the power was turned on. I checked the input voltage and it is correct 26 volts, what could cause it to explode, are there several versions of the TDA7294 with other supply voltages? There is no insulation between the circuit and the heat sink, but the heat sink has no contact with the device body.  

I am wondering why they use a thermistor to monitor temperature when they have a reference detector?https://www.st.com/resource/en/application_note/an5571-signal-conditioning-for-ndir-sensor-stmicroelectronics.pdf  

Do ST has spice model for opamp ? Especially TL062 

我现在想用stm32F407系列的spi口来采集mp34dt05的PDM麦克风的数据，但是我发现我采集到的pdm数据流基本上不会因为我的环境变化而产生任何变化。你能详细告诉我spi是怎样的吗？要接收mp34dt05的数据，麦克风芯片mp34dt05有驱动文件吗？如果有的话可以发给我吗？感谢您的关注。Translated from Chinese to English: I am now trying to use the spi port of the stm32F407 series to capture data from the mp34dt05's PDM microphone, but I find that the stream of pdm data I capture basically doesn't change in any way due to changes in my environment. Can you tell me in detail how the spi works? To receive data from the mp34dt05, is there a driver file for the microphone chip mp34dt05? If so can you send it to me? Thank you for your attention. Translated with DeepL.com (free version)  

Hello, I am attempting to identify a component from a switch mode power supply out of a audio preamp.I am 90% confident it is a zener diode, but after that I am at a loss. Markings (cathode band on left):(ST) 98ZKW  *not sure if there is a space between K and W, might be ZK W Measurments (in mm):2.78 W --> case4.15 L --> case5.30 L --> case w leads2.11 H --> case2.25 H --> case w leads Any assistance is greatly appreciated. Kind Regards, Rick  

请问如何购买STA309A评估板？你们提供技术文档支持吗？Translation to EN: How can I buy the STA309A evaluation board? Do you provide technical documentation support?

Hi Team, @Peter BENSCH  I want to process PWM HART signals of 1.2 KHz/2.2KHz. Will the op-amp TSX631A be suitable for this application which is having a bandwidth of 200 KHz?  Regards,Sreejith R Nair

Hi,@Peter BENSCH In the datasheet of ST LMV321ILT op-amp, it is stated that minimum voltage supply span is 2.7V and maximum supply span is 6V. Can you suggest whether LMV321ILT can be used with 3.3V or an alternate that is both pin to pin and 3.3V compatible? Also, the VOH VOL characteristics are defined for VCC=5V and VCC= 2.7 V. Could you also provide VOH VOL levels when VCC =3.3V if the op-amp is compatible with supply of 3.3V? Regards,Sreejith

Could you advise me if there are an explanation of the energy loss seen on the Sic mounted on the PCB which is higher than the energy loss on the Datasheet .Thanks ,

Hello,Is there a TDA7294 spice model? I am an engineering student doing my Bachelor's audio project and would help me in the development of the project.Best,João Santos

Need to replace this. I'm assuming the one on the left is toast just from a visual inspection. Can someone tell me which specific version I need to get? I'm not sure if the "EZ605" designator means anything. Any suggestions are appreciated. Thanks!  

Hi, I hope finding an answer this is my first time asking you.  So, I'm trying to build a CLASS_D AMPLIFIER with codec (STA309A). This codec has 8 input channels for serial AUDIO and I want to play more channels for the codec's inputs but the I2S can only transmit the data in stereo mode. 

Dear all, the first of all thanks for let me leave a message in this post.We have a schematic circuit, with the LM324 it works but with the LM358 doesn´t work. It gives the correct voltage in both chips in the output, I connect a relay solid state from Carlos Gavazi and with the LM324 works and with the LM358 doesn`t works. the differents inside the chips are ( picture attach).I check the mA output and all is correct. the consume of solid state relay is only 10mASomebody have this error? Which difference the are between the LM324 and LM358? could somebody give me a refference form a LM324 in two cannels? thanks in advanced Thanks in advanced. 

Hi, I made a circuit for the TDA7292 with a simple power supply as shown in the brochure. The standby and off functions work well, but the low tones become distorted when I increase the volume more. The circuit works with 12VDC. Is it because more DC voltage is needed? or do you have to make an additional modification to the output?Thanks in advance.

please help to  provide the SGS report of TSC200IST for Goertek

Hi, I was wanting to know that if I only use one channel of the TDA7297, say input 1, but not input 2, how should I handle the unused channel? Should I just leave the unused input floating, or should I tie it to ground, or tie it to ground via a resistor? Thanks,Erik

Hi!I have LMX358IQ2T device that has burrs on the edges/pad.  I would like to know if this is OK to use.Do you have any criteria on accepting or rejecting burr problems on non-leaded devices?   

Hi,1. Is there a SPICE model available for this part?2. Is the output open-drain or push-pull? Cheers,Kay

Why does ST not provide a spice model for a new opamp. Specifically the TSB182 ?New parts should have a model.No model , not going to be considered  for use.On  another note  ST's website is almost unusable. I get HTTP 408 and 504 errors almost everywhere I go , very frustrating.

Hello,We currently use diode 1N5711 in an array. It would be beneficial to have matched batches as mentioned on the website 1N5711 - 70 V, 15 mA RF and Ultrafast Switching Signal Schottky Diode - STMicroelectronics.I'd like to know more about the matching process and what the deliverables look like. Customer support sent me here to connect with an apps engineer._Chris

I am using STM3210C-EVAL board. It has a audio jack port. Datasheet says i can play audio but i couldn't find anything about audio input.My question is:Can i record audio using a 3.5mm jack microphone via this jack input? And does this jack port support I2S protocol?If not, what is the best way to get audio input?

i am running bldc motor on L6235Q it works properly but when i  increase duty cycle greater than 90% motor get stops so please tell me what is the problem. why my bldc motor is not  running.

This is my first time asking something in ST's Forum. I am trying to build class-D amplifier with STA309A codec from ST. I am using STM32 MCU as a Master Transmitter for audio. The codec has 8 input channels for serial audio data, LRCLK, MCLK & BCLK. As of my knowledge, I2S can only transmit in stereo mode. How do I play more than 2 channels for STA309A's Inputs. Apologies for my bad English.

Hello everyone!I had the following question: how to control the current level using an ADC?I will be grateful for the answer!

Hi, I'm trying to design hifi amplifier using TDA7292 refering its datasheet.I read the datasheet of TDA7292, and I have some following questions :​How can I use differential audio input at TDA7292? Is it okay to connect amplifier's IN1- and IN2- pin to differential audio source's L- and R- pin instead of connecting those amp pins to GND?With a single supply circuit, is it okay to supply single +48V 2A power to TDA7292? In TDA7292's electrical absolute maximum ratings, it the maximum DC supply voltage of TDA7292 is +-35V. But what I'm trying to design is single supply circuit. I wonder if it would be overloaded.Is there are any disadvantage using 'For Single supply' circuit instead of using 'For Dual rail supply' circuit?I found what I assume to be an error in the Figure22 diagram on page 17 in the datasheet. Pin 2 of the TDA7292 is OUT1 and pin 10 is IN1-, but in Figure 22 they are reversed. It seems to me that this is an error, am I right?​I'm newbie in circuit design, so please unde