Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Recent content by eraycanli

  1. E

    Variable Frequency PWM to Analog Circuit?

    Yes, that sample hold and abalog divider makes the circuit a bit difficult. I will try both SH/Divider circuit, and switched capacitor filter alternative.
  2. E

    Variable Frequency PWM to Analog Circuit?

    FvM, Thanks for reply. What you mean by 'analog divider'?
  3. E

    Variable Frequency PWM to Analog Circuit?

    Ofcourse we have to wait for 1 cycle to end:) I gave the LTC2644 example, and wanted to imitate behaviour with an analog circuit. If you check its datasheet, input to output waveform will be helpful to understand.
  4. E

    Variable Frequency PWM to Analog Circuit?

    FvM, Thanks for your reply and interest. That is correct, I want adaptive filtering. About the output ripple, it must be less than 5% of output voltage (0-5V) Settling time should be less than 5ms in any PWM input. I will try Sample Hold circuitry, but if a simpler circuit exists, that will be...
  5. E

    Variable Frequency PWM to Analog Circuit?

    Are switched capacitor filters compatible for this application? I was wondering if I could generate a clock from PWM signal, divide it and feed the clock input of filter.
  6. E

    Variable Frequency PWM to Analog Circuit?

    Dividing the signal into a high frequency one I guess. Not sure how to implement, just an analogy to structures like clock dividers.
  7. E

    Variable Frequency PWM to Analog Circuit?

    Thanks, I will simulate and try this circuitry. By the way, what about multiplying PWM signal? Does it lead to anywhere?
  8. E

    Variable Frequency PWM to Analog Circuit?

    Klaus, Sorry for the mistake, I intended to write "lower frequencies". For instance, using a 2.5Hz cutoff frequency RC filter would be OK, but if the source is at 500Hz, change of output will be slow, in hundreds of milliseconds range. About the MCU alternative, this project will be a...
  9. E

    Variable Frequency PWM to Analog Circuit?

    Hello Klaus, My target is to convert duty cycle to analog value. Input is 5V PWM with varying frequency (and duty), output should be linearly proportional to duty, in the range 0-5V Using a 5Hz-below RC filter is ok, but with higher frequencies, delay will be higher than acceptable. Thanks!
  10. E

    Variable Frequency PWM to Analog Circuit?

    Hello, I need to convert a PWM to analog signal. But the issue is, frequency of PWM may change. So, RC-filter option is not preferred. What kind of circuitry would be appropriate for this? By the way, there exists an IC named LTC2644, which operates exactly as I want, but not meeting my...
See more

Part and Inventory Search

Back
Top