• AD1933 & ADAU1372

    Hello Dave,
    Thank you. I have so many questions.
    1. AD1933 datasheet says: AD1933 provides 8 DACs using patented multibit sigmadelta (Σ-Δ) architecture. The DACs include on-board digital reconstruction filters with 70 dB stop-band attenuation, operating…

  • ADAU1372 ADC references

    I'm considering using the ADAU1372.  What, precisely, are the AINxREF pins?  In the datasheet, it says to tie them to CM, but on the eval board, they're only AC-coupled to GND.  Which is recommended? (Standard line-input audio).

    Also, can these…

  • ADAU1372 Setting up

    Hi,

    We are starting to use using the ADAU1372 to replace an old A/D converter.

    We are supplying an external clock (MCLK)  of 18.75MHz. I'm basing my calculation on the 19.2MHz example in the datasheet but changing the fraction part to match my needs.…

  • ADAU1372 I2C Problems

    I am applying 12.288 MHZ to MCLKIN on powerup.  The ADAU1372 starts outputting a start condition followed by 0xA0 on the I2C bus.  This happens to be the base address for a 24 series serial EPROM.  The ADAU1372 will stop when I create a bus collision but…

  • ADAU1372 ADC Polarity

    I have programmed the ADAU1372 using the talkthrough mode and has configured the input as single-ended input with PGA powered down. I have injected a test audio signal for checking polarity and has discovered that the audio signal is inverted at the line…

  • ADAU1372 anti-aliasing filter

    Hi,

    i am designing a system where i have to pass some strict frequency mask tests on the analog audio inputs/outputs. These tests include unwanted signals that are not within the first nyquist zone of an 192 kS/s ADC and therefore need to be attenuated…

  • I2S Isolation ADAU1372

    Hello,

    I am working with the ADAU1372 connected to an fpga evaluation board. I send and receive the data via I2S. Now I face the problem that I see random peaks on the DAC Output. For synchronization MCLK comes from the fpga board with 26 MHz. PLL activated…

  • ADAU1372 on Beaglebone Black

    I'm trying to compile the ADAU1372 modules for the Beaglebone Black and not having much luck.  I noted that the supposedly mainlined ADAU1373 didn't pop up as an option in my menuconfig, either, so I figured I finally needed to ask folks here as I…

  • ADAU1372 PGA Control Register

    I misunderstand the PGA Control Register:

    Are there only 5 steps?

    or its able to increments/decrements by bit, 64 steps?

  • ADAU1372 microphone amplifiers

    What is the configuration of the microphone amplifiers? At a guess, it is an op-amp with the inverting input connected to the mic input via a resistor, and the non-inverting input connected to the reference, and gain setting resistors selected by the…