Questions tagged [dac]
DAC stands for Digital-to-Analog Converter, and is used for outputting analog signals from a digital input, typically a microcontroller.
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DAC Schematic Overview
I was wanting a schematic review of my DAC-AMP using the XMOS-XU316 over I2S with a ES9039Q2M. Any input would be appreciated.
The specs of the DAC are:
32 bit
768kHz Sample rate
Here is the full ...
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Emulating resistor chain with BJT
I am looking for help in replacing manual 10-way switch with MCU controlled schematic that will emulate those switches and resistor chain.
The third-party device is using constant current source to ...
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DAC output power calculation
I’m looking to use the high speed DAC DAC linked here, but am confused about what the expected output power when measuring in a 100 ohm load. So I see on page 14 the datasheet gives a power of 1.4 dbm ...
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How to find Output Noise of DAC
I am struggling to understand how to calculate noise of a DAC8831.
The DAC datasheet only mentiones output noise, But I believe the Reference Voltage of the DAC also influences DAC output noise. How ...
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Application notes / Reference designs for AD5758
I am considering using AD5758 for design of an PLC, where it would need to generate -10 ... +10 V analog voltage or 4-20 mA analog currents. I was studying the datasheet and also looking online but ...
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How to separate the analog and digital ground and than connect them in star ground fashion in this PCB?
I have read many articles suggesting two separate areas for analog and digital ICs. So, I have tried to do the same:
First of all some Information on the things here:
It is a 2 layer PCB
The area ...
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Can the STM32 DAC LFSR output be predicted using coding?
How can all outputs of the algorithm be predicted, including the quantization noise generated when reading decimal data (masked and converted to the desired range with a modulation operation) received ...
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Diffence between two I2S MAX98357 DAC's [closed]
Can anyone help identify what separates these two DAC's? They both use the MAX98357 I2S input, Class D audio amplifier. And seemingly has many of the same components, however, the Pimoroni (black) has ...
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How DAC0800 Works internally
Based in the following functional block diagram from the datasheet , I would like to understand how all block work together to achieve the final DAC functionality , I know there must be an opamp after ...
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Switching regulator noise: fixed resistor vs digital potentiometer
I am building a switching regulator design for a high current application. Here I want to control output voltage Vout through the custom software by adding the digital potentiometer, basically ...
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Need help in confirming the circuit and the results. I am converting a PWM signal 0 - 5 V to analog 0 - 10 V
I am trying to convert a PWM signal generated from MCU which can only output 0 - 5 V but I want to drive an ECM fan which requires 0 - 10 V analog so I am using a MOSFET to switch 10 V supply by ...
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CS4398 fails to ACK on I2C
I'm trying to communicate with CS4398 DAC on I2C from STM32L1 microcontroller. In the photo you can see address byte 0x9c and then what should have been the ACK bit. Instead of pulling SDA down, ...
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Need Feedback: I²S DAC + Class-D Amp (PAM8403) Driving 1W Speaker — Safe Setup?
I'd appreciate a sanity check on my audio setup before I finalize the design. Here's what I’m using:
Components
DAC: PCM5102A I²S DAC (from Raspberry Pi 5)
Amplifier: PAM8403 HW-104 (Class-D, 2×3 W, ...
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PWM DAC Considerations
Consider the following PWM D/A Converter that I would like to use. I saw a similar concept once on a commercial device, and since I now need an adjustable voltage with high resolution, but not fast ...
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Can PWM DAC convergence be improved by taking into account the previously commanded output voltage?
Suppose the current output (and, therefore, capacitor voltage) is 0V and the PWM DAC is commanded to output AVDD/2. Conventionally, it would set the duty cycle to 50% - which is the value that works ...
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