Questions tagged [adc]
An ADC is an Analog to Digital Converter. This device converts analog signals into digital form. It is mainly used by digital circuitry to take analog measurements.
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Why is my ADC (LTC2448) resetting mid conversion?
I am looking for some ideas on how to troubleshoot a funny issue I'm seeing with my LTC2448 ADC. I am using it to sample signals from a few different electrodes and feedback sources, and in the data I ...
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CIFF loop filter implementation issues
This is a CIFF loop filter: delayed integrator (left dotted square) + passive summer (right dotted square), where out[k] goes to the quantizer input.
But the problem is: I intended u[k] + w[k] as a ...
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PCM3168A codec Differential to Single Ended Buffer for DAC Output correct configuration
The plan
On my DSP development board I’m planning to use the TI PCM3168A codec. For now, I’ll only be working with line-level, single-ended audio in/out. This codec only provides differential outputs, ...
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UART buffer mostly filled with garbage data (STM32F7)
Basic setup information:
I have a Nucleo-F767ZI connected to my PC through the USB cable which is also used for its virtual com port. All the peripherals have been iniitalised to their default mode. I ...
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Design a SPL meter
First of all, let me describe what I want to achieve:
Design an SPL meter with a measurement range from 30 dB to 130 dB (ideally up to 140 dB if possible).
Use an electret condenser microphone with ...
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Measuring 0.6-2.6V using the 0-3.3V ADC on STM32F401CC (Black Pill)
I'm measuring sensor output in the range of 0.6-2.6V in bursts of ~2100 samples at ≥200 kHz using the built-in ADC on the STM32F401CC (Black Pill development board). Currently, part of the 0-3.3V ...
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How do you set full range input voltage of ordinary ADC?
In an ordinary single ended ADC. Do you need to set the input voltage range? Or does it automatically digitize whatever input voltage like 0.5V, 1V, 3V, 4V? (Assuming the battery of the ADC is 5V)
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Input sensitivity and voltage range of ADC
For a 24 Bit ADC.. what does it mean if the spec says it has Sensitivity 85.7 nV / +/- 250 mV?
Does it mean the entire 24 Bit has +250 mV to -250 mV full range or does it mean it can capture more ...
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Incremental ADC: Is reset included in the number of conversions (OSR)?
I've read some conference/journal papers and they seem to adopt different timings for reset.
For example, one paper from JSSC 2019 (https://ieeexplore.ieee.org/document/8605509) adopts the former one ...
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Gas sensor to ADC: protection methods
I am interfacing this gas sensor to the ADC of a TI CC1352P microcontroller. Can I connect the output of this gas sensor to this ADC through an RC low-pass filter (fc<100 Hz) or do I need to place ...
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STM32 I2C Communication with ADC
I have a PCB with ΣΔ ADC ADS112C04IPW, which communicates with the MCU via the I2C interface. The purpose of the PCB is to be an evaluation board, on which I want to try some of the features before I ...
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SAR ADC antialiasing filter vs Kickback filter
As per my knowledge Anti-aliasing filter is placed just after the sensor and Kickback filter is placed just before the SAR ADC input.
Please correct me if I am wrong?
The below image is taken from ...
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How to read thermopile (ZTP-115) with ADC directly?
I have 3 IR temperature sensors (thermopiles), ZTP-115. I know there is a "standard" circuit for reading their values, similar to the one below. It's usually published without any detail, ...
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How to accurately measure small current variations (10–15mA) in a 24V PNP sensor circuit with isolation?
I'm working with a metal detection sensor that operates on 24V DC and has a PNP-style output. The sensor's current consumption is:
Idle state: ~10mA
Metal detection event: increases to ~12–15mA
I want ...
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STM32F334C8T6 Power supply using different source for VDD and VDDA
I've recently started a project to build a linear power supply using an STM32F334C8T6 microcontroller. To achieve a high-precision power supply, it's crucial to have high-precision ADCs/DACs. However, ...