1. S

    HELP!! I2c adc pic16, pic1LCD

    I want to use two or more adc channel using I2C and lcd. Can someone help me where i am doing wrong? I don't get a code error but also I can't get number on the lcd. I2c.c #include <xc.h> #include "I2c.h" unsigned char RS, i2c_add, BackLight_State = LCD_BACKLIGHT; //---------------[ I2C...
  2. spacejedigundam

    how to Vernier TDC adjust every stage time differential to achieve 1 TLSB ?

    How do we get td1 - td2 = 2ns? I have no IDEA about how to adjust delay cell ,Thanks solving my problem , Thanks a lots
  3. spacejedigundam

    How to measure 10bit SAR ADC 's input Dynamic range after switch 9 time ?

    I want to know 10 bit SAR ADC , supply voltage 0.5V , Vcm based , after DAC switch 9 times , how to measure DAC input Dynamic range ? I need to know voltage range that I can use Voltage to time Converter transfer the voltage to times Thanks everyone reading Sample_N = DAC's N node...
  4. M

    Quad 100k Digital Rheostat - Can it be wired for 300k?

    Hi, I have a Fairchild FL51x0 which has a control pin where the voltage at the pin is input to an 8 bit ADC with 2.5V reference. The pin sources 10uA current, so that an external resistor can be used to set the voltage (0-250k). I'd like to use a Digital Potentiometer/Rheostat. However, the...
  5. ashokraj

    Selection of ADC. What is the meaning of VA( analog power supply)?

    Hi, I am trying to find an ADC with the following specifications. 1. Power supply to it has to be less than 3V. 2. sampling frequency is 500ksps. 3. 16 bit. 4. My input signal is varying from 0 to 2V. When I am trying to find an ADC I came across the following datasheet: 1.Datasheet-1 In it...
  6. H

    ADC for 8 Buttons

    Hi folks, for a uni project I’m creating a synth using an Arduino. I want to have at a minimum 8 buttons for an input but I’m restricted to using only 1 or 2 input pins. Therefore I wanted to use an ADC to convert the input to binary values. I wanted to use no IC’s if possible so tried using an...
  7. K

    Battery measurement with Capacitor Voltage Divider & ADC

    I am working on a micro cat tracker tracker project (GPS / LoRa) with ATSAMR34 MCU with LoRa Transceiver and a u-Blox ZOE-MOQ GPS Receiver powered by three Energizer 675 Zinc Air batteries, which should last about three months when determining the position every hour. The MCU and GPS will be in...
  8. J

    Accelerometer signal conditioning (ADC reading)

    Hello, I found a 3-axial accelerometer with +/-500g that has a +/-1.25V range. The bias voltage (0g) is at half of the reference given (It does not give negative voltage). If I'm supplying it with 3.3V, the bias voltage will be at 1.65V, so the range will be nominally 0.4V to 2.9V. I am to...
  9. Chandler Timm Doloriel

    How to convert ADC reading to analog current value in LTC6106

    I couldn't convert the ADC reading to its respective analog current value. I connected a microcontroller in the Vout to read the current, it will give an 8bit HEX value. The load is another microcontroller. The ADC reading in no-load is HEX00. (8-bit @ 3.3V) and LTC6106 for current sensing...
  10. F

    ADS1115 measuring negative values

    Hi there, it is clear to me that the ADS1115 cannot measure negative values. I am trying to measure the current on a battery connected to a UPS which can be positive or negative (charging-draining). I am using a LEM which reverse the polarity of the output according to the current flow. The...
  11. H

    ADC throughput calculation

    Dear Team, I was studying about adc basics from this document(ADC BASICS) .I have a question regarding the throughput calculation.The document says "Consider the case of single ended conversion where one conversion takes 13 ADC clock cycles.Assuming the ADC clock frequency to be 1MHz, then...
  12. ashokraj

    what are the safety/protection I will have to take when converting 0 to 240V to 0 to 1V , feeding to adc pin of microcontroller

    Hi, I want to measure the voltage of the fan regulator and feed into ADC pin of ESP 8266, The range of ADC is 0 to 1V, theoretically I can use the below circuit. VG1 being the load voltage taken from the fan regulator, VF1 will be driven into my ADC pin , My doubt is, can i go with this circuit...
  13. T

    Excitation of Wheat-Stone Bridge Measurement With Multi-channel ADC

    Hello, I'm currently working on a project, where I want to measure force using strain gauges. The strain gauges are configured in four point Wheatstone bridges. I'm using a four channel ADC. On each channel I feed in the amplified differential output voltage of a Wheatstone bridge. My question...
  14. Prajeet Anand

    PWM read with ADC stm8

    I want to read PWM signal with an A/D converter. Is it reliable to take 100 samples of adc data and average it out.Im still seeing some spurious values in-between my captured data. What would be a reliable way to acquire precise output?
  15. T

    Could not understand why noise cancellation must be at (fs-fc) for -60dB

    I have the overview of signal with cut-off frequency fc that I want to sample using an ADC with sampling frequency of fs, I have seen that some of my colleagues wanted to dumb any noise at -60dB at frequency fs-fc as you see it in the picture. for my understanding of nyquist theorem, I need to...
  16. B

    Calculating 1 cycle RMS for 50/60Hz signals

    I found this paper to be useful. It says: So in my case for one cycle, I can't have an integer N that matches both 50 and 60 Hz and possible fluctuations. In the microcontroller, the plan I have is to set an ADC triggered by a timer for a fixed sampling frequency. I can also use DMA or double...
  17. S

    Simulate PSoC in Proteus

    Hello. I am working on extracting strain gauge values mounted on my ATV (front suspension) with the help of a 20 bit ADC of PSoC. Before that I would like to simulate it. So could you please suggest how can I do this in proteus(or any other SW if not possible). Please help. Thank you for your time.
  18. M

    Clocking a HI7190 ΣΔADC using a 10MHz Quartz Crystal Oscillator

    Hello, This is my first post so I'm sorry ahead of time if I'm missing key information. I am trying to produce a clock signal for a HI7190 (ΣΔADC) using a 10MHz quartz crystal oscillator. The HI7190 uses either 2-Wire or 3-Wire (SPI-compatible) communication for reading and writing internal...
  19. P

    Reading the Analog Value using the ADC pins

    Hi, I am using a Texas Instruments Microcontroller (TMS320F28335), I would like to read the analog value from circuit output to be read by the microcontroller using the ADC pins. Please help me in how to do this. Thank you.