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Q&A from Analog Devices EngineerZone: SigmaDSP/SigmaStudio and DSP discussions (72 topics).
72 topics · 380 messages
Filtered by: #adc ✕
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Conditioning/filtering of noisy AUXADC input
Hello EZ, I have build a DSP using the ADAU1466. It has been working great for a while know. However, I have mooved it to a new case with a significantly longer wire run for the potentiometer that is
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adau 1701 ADC potentiometer trouble
Hello everyone, I have a problem with the potentiometers that come with Wondom jab 5 4x100W in sigma studio schematic. Audio input AUX Input jack signal from PC 24bit 192kHz Stereo to output connectio
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Add two input channels to ADAU1701
Hello: I am looking to add two analog channels to the inputs of the ADAU1701, presumably using the i2s interface. Can you direct me to any parts suggestions for the ADCs and any suggested reference sc
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Issues with serial input ports
Hi all, I'm having trouble getting the serial input ports other than the first one to work. This is my setup: Serial input port 0: it's connected to an ADC that acts as an I2S master. Serial input por
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ADAPTATIVE / DYNAMIC LOUDNESS
Hi I'm designing a 3 way crossover with I2S input. I'd like to insert an adaptative loudness, designed for ADAU1467. I've seen all the previous topics about adaptative / dynamic loudness, but none of
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external ADC and ADAU1452
I have connected a simple stereo ADC : ADC Analog to Digital Converter WM8782 I2S 24Bit from https://www.audiophonics.fr/en/devices-hifi-audio-adc/adc-analog-to-digital-converter-wm8782-i2s-24bit-192k
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Use both internal and external TDM DACs
I know I can't use both TDM and l2s devices at the same time. But what about internal DAC's and ACD's, and an AD1938 in TDM mode? If so, can I mix the 4 internal DACs and up to 4 of the 1938 DACs? Aud
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Adau1467 expand I/O ADC and DAC
Dear sir/madam, As I am working with the Adau1467, I'm running out of ADC and DAC pins. For this application I would like to use at least 6 microphones, 1 audio input and 14 DAC outputs. I could use t
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ADAU1452 and PCM1802, Problems writing SPI EEPROM and no signal from ADC
Developing a ADAU1452 based board, using PCM1802 ADCs and PCM5102A DACs Have the board up and running. All PSU voltages within spec I can program it through I2C via Wondom ICP3 I can flip an GPIO pin
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ADAU1701 ADC external resistor minimal value
Hello! I'm explaning all things but I would be glad if someone could just confirm or disprove the following third sentence ;-). I'm working on a wearable voice amplifier project for which volume and w
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i need help with a plan for Adau1467 BBE Sonic Maximizer
would it be possible with an adau 1467 to simulate the function of a BBE Sonic Maximizer with integration of the Auxadc latest sigma studio version thank you would help me a lot greatings from germany
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EVAL-ADAU1467Z Auxadc
hello need help how do i connect a potentiometer to an auxadc but where the other two pin Audio Signal Processors hardware adau1467 aux adc EVAL-ADAU1467Z SigmaDSP Audio Processors Show More
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Master Control Port XML works in realtime link-compiling but not after boot
Hi, I need a help with my SS project: I'm using a Master Control Port Boot to write some register configuration to my ADC and DACs When I use it in realtime link-compile-download, works very well, but
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Controlling a external device through i2c (Sigma350 family) not working
Hi everyone, I'm trying setup a PCM1865 through my ADAU1466 using the Master Control Port I/O block. I tryed different ways to do this, never worked. Can someone explain me the XML file? If mine is co
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Setup a software controlled DAC/ADC through i2c with ADAU1466
Hi everybody, I'll detail the board as much as I can: So, the board have a ADAU1466, 4x PCM5122 and 1x PCM1865, both ADC and DAC are software controlled through i2c, with its respective addresses corr
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ADAU1787 Differential ADC
What does ADC_CTRL5 bit 4 do exactly? It is labeled as DIFF_INPUT and states "Configures the ADCs for differential operation.". I don't see any other mention in the datasheet of how this works only si
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Verifying ADAU1701 input and output levels?
Hi all, I've been using the ADAU1701 chip in a speaker project and for the most part things are working as expected however the audio seems to get attenuated on the output ( only able to confirm this
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External oscillator with ADAU1701 and multiple I2C codecs
Hey all, I'm new to the SigmaDSP platform and am currently working on several of my own designs using the ADAU1701 and ADAU1452. I also intend to use an external oscillator with at least the 1701 for
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ADAU1701 audio ADC DC offset
Hi ! We are using both audio ADCs of the adau1701. The DSP program is a simple mux allowing us to use either the analog or serial inputs of the DSP (see picture). We are using DIG0 and DIG1 to send bo
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Sigma Studio - how to add Readbacks?
Hi there simple question - where do i find the Readback blocks in Sigma Studio? I want to view the value of ADC inputs but I cannot find Readback blocks anywhere in the left hand menu tree? I am using
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ADAU1979 behavior under loss of MCLK
Is anyone aware of any abnormal behavior in the ADAU1979 if MCLK is lost (but BCLK and LRCLK keep running)?
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ADAU1978 Digital DC high-pass filter
Hello, I'm using ADAU1978, can you please clarify the use of the digital DC high pass filter configured in register 0x1A bits 0-3? Also, how is it working with enabling DC calibration (in register 0x0
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Allow aliasing in AUX ADC (1451/1452)?
I'm using an ADAU1452 at 192kHz sample rate for a project. I'm aware the auxiliary ADC's run at 48kHz regardless of the DSP sample rate. If I try to use these to measure signals up to 96kHz, will this
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LabVIEW source code to read AD7402
Hi, Can anyone help me with the LabVIEW FPGA source code to the AD7402 ADC. I tried to develop it myself without success. ad7402 adc Integrated/Special Purpose A/D Converters delta-sigma Isolated A/D
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DC offset in ADC - minimize/characterize? (ADAU1701)
I noticed a nontrivial DC offset present in the audio ADC that's causing some problems, particularly when low inputs are present (say, 100mVpp) from the customer device, and a fair bit of gain is appl