Tagged Questions
An ADC is an Analog to Digital Converter.
1
vote
1answer
51 views
LC filter for Vref and Vadc
I'm reading an Atmel Data-sheet and it mentions using an LC filter for the Vref and Vadc pins, when simulating a simple small AC voltage with a 5V offset and using an LC filter with 10uH and 10uF the ...
3
votes
1answer
100 views
How to measure battery voltage
I am building a battery powered device. Almost all of my logic is running at 3.3v, although I do have a 5v supply for a few hobby servos.
I want to measure the battery voltage, but I can't do so ...
2
votes
2answers
140 views
Microcontroller with ADC and capable of SPI communication
I am designing a system where
Analog Signal ---> (ADC- Digital Data )---> UWB chip mostly WSR601 or AL6301/AL5100 Chipset
I am looking for a microcontroller to perform the function of ADC and ...
0
votes
0answers
66 views
Differential Amplifier for ADC
I'm trying to design simple multichannel ADC interface for recording live performances from audio mixing console. Many AD converter chips have differential input. Also direct output from mixing ...
0
votes
1answer
128 views
Communication between modules over USB using a uC
I have a module (say A) which sends data serially to me at 5 Mbps. I want to transfer this data to another module (say B). For B, I have a few choices for links: USB, UART, PCI/E, etc. I am not sure ...
0
votes
1answer
95 views
How does this Digital-to-Analog converter work?
This question:
RoboCup Junior IR Ball detection
has a link that includes the attached circuit for D-A conversion.
I understand that the output of the sensor contains several amplitudes, and ...
1
vote
3answers
124 views
LPC2148 ADC problem with voltage divider for battery
I am working with a custom PCB using the ARM LPC2148. I'm trying to measure the battery voltage, which can be up to 4.2V or so, by using a voltage divider. However, using different resistors causes ...
2
votes
2answers
140 views
STM32F103 ADC Noise
I am new to this forum. I have read the questions and answers in this forum on the similar topics but that one was for STM32F2 CPU. I am using STM32F103 and I have similar problem.
Similar to the ...
-2
votes
2answers
111 views
Principal of Analog to digital converter(ADC) and Digital to analog converter(DAC)
Analog to digital converter is one that converts analog output form sensors to digital one what are basic principal of Analog to digital converter(ADC) and the opposite of one that takes digital input ...
1
vote
2answers
155 views
ADC input protection?
I need to sample an analog voltage from a sensor (0-12v) in an environment where large voltage spikes may be induced in the transmission line, what's the best (simple and cheap) method of protecting ...
2
votes
2answers
178 views
Combined ADC scaling and offset with variable input voltage ranges
I am trying to create a circuit which will allow me to scale and offset a voltage (be it AC or DC) to within the range of the Arduino ADC.
The voltage could be anything between + and - 250V, but I ...
1
vote
4answers
108 views
Expanded Scale ADC
Suppose I am interested in accurately measuring voltage in a narrow range, say 10V to 12.5V with an accuracy of 0.01V. If my math is correct this corresponds to 251 possible values.
An 8 bit ADC ...
16
votes
6answers
821 views
Why are digital oscilloscopes still so expensive?
I'm a beginner in hobby electronics and I am wondering
why digital oscilloscopes are still so expensive?
In times of cheap GHz CPUs, USB 3, ADSL modems, DVB-S receivers, blu-ray players which all of ...
1
vote
2answers
231 views
ADC sampling rate to MCU clock speed relationship
How can I determine the clock speed requirements of a mCU to manage a given ADC input?
This application is very simple - I just want to take an SPI stream from an ADC into a mCU and spit it out the ...
1
vote
2answers
112 views
ADC for pH and conductivity sensor
How many bits does a pH or conductivity sensor have? I need a Analog-to-Digital-Converter for these sensors. Thus I need to know how many bits are required in order to purchase the right ADC.
I am not ...
