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Q&A Ceramic filter vs ceramic resonator

The Murata part you have chosen as a replacement is unsuitable. Its only application is to cheaply replace crystals in oscillators and, as such, it will have a profoundly tight bandwidth (maybe les...

posted 1y ago by Andy aka‭  ·  edited 1y ago by Andy aka‭

Answer
#6: Post edited by user avatar Andy aka‭ · 2022-10-15T13:47:36Z (over 1 year ago)
  • The [Murata part](https://www.mouser.co.uk/datasheet/2/281/p16e-522700.pdf) you have chosen as a replacement is unsuitable. Its only application is to cheaply replace crystals in oscillators and, as such, it will have a profoundly tight bandwidth (maybe 1 kHz or so) whereas the original filter you linked has a 20 dB bandwidth of 750 kHz (as per the other document you linked).
  • Also, if you read [this data sheet on the original filter you would have liked to use](http://files.rct.ru/pdf/quartz/4.5-6.5m.pdf), it says the 3 dB bandwidth is 60 kHz. And, if you read the data sheet for the chip it says this: -$$$$
  • > 3.1.2 Ceramic Filter Considerations
  • The SIG60 is designed to operate with one ceramic filter for transmission and reception. However, if
  • switching between two channels is desired, two ceramic filters are required. The minimum allowable
  • bandwidth of the ceramic filters is +/-60 kHz @ 3dB. Narrow bandwidth limits the maximal bit rate.
  • $$$$
  • Note the bit about minimum allowable bandwidth being 60 kHz (a lot higher than a ceramic resonator. And, it seems like the last sentence might be the easiest to grasp. If you used a data rate that was very slow, you could get away with a tighter bandwidth filter so, maybe as a test, you can drop your data rate to maybe 100 bits per second and see it it all comes good.
  • Keep testing using an exclusive transmission connection and only when that shows a good sign of working, try communications over the DC link. The other thing to take away is always dig deep until you have the best data sheets. Neither of the ones you linked were suitable for ascertaining the true bandwidth performance.
  • The [Murata part](https://www.mouser.co.uk/datasheet/2/281/p16e-522700.pdf) you have chosen as a replacement is unsuitable. Its only application is to cheaply replace crystals in oscillators and, as such, it will have a profoundly tight bandwidth (maybe less than 100 Hz or so) whereas the original filter you linked has a 20 dB bandwidth of 750 kHz (as per the other document you linked).
  • Also, if you read [this data sheet on the original filter you would have liked to use](http://files.rct.ru/pdf/quartz/4.5-6.5m.pdf), it says the 3 dB bandwidth is 60 kHz. And, if you read the data sheet for the chip it says this: -$$$$
  • > 3.1.2 Ceramic Filter Considerations
  • The SIG60 is designed to operate with one ceramic filter for transmission and reception. However, if
  • switching between two channels is desired, two ceramic filters are required. The minimum allowable
  • bandwidth of the ceramic filters is +/-60 kHz @ 3dB. Narrow bandwidth limits the maximal bit rate.
  • $$$$
  • Note the bit about minimum allowable bandwidth being 60 kHz (a lot higher than a ceramic resonator. And, it seems like the last sentence might be the easiest to grasp. If you used a data rate that was very slow, you could get away with a tighter bandwidth filter so, maybe as a test, you can drop your data rate to maybe 100 bits per second and see it it all comes good.
  • Keep testing using an exclusive transmission connection and only when that shows a good sign of working, try communications over the DC link. The other thing to take away is always dig deep until you have the best data sheets. Neither of the ones you linked were suitable for ascertaining the true bandwidth performance.
#5: Post edited by user avatar Andy aka‭ · 2022-10-15T13:46:18Z (over 1 year ago)
  • The [Murata part](https://www.mouser.co.uk/datasheet/2/281/p16e-522700.pdf) you have chosen as a replacement is unsuitable. Its only application is to cheaply replace crystals in oscillators and, as such, it will have a profoundly tight bandwidth (maybe 1 kHz or so) whereas the original filter you linked has a 20 dB bandwidth of 750 kHz (as per the other document you linked).
  • Also, if you read [this data sheet on the original filter you would have liked to use](http://files.rct.ru/pdf/quartz/4.5-6.5m.pdf), it says the 3 dB bandwidth is 60 kHz. And, if you read the data sheet for the chip it says this: -$$$$
  • > 3.1.2 Ceramic Filter Considerations
  • The SIG60 is designed to operate with one ceramic filter for transmission and reception. However, if
  • switching between two channels is desired, two ceramic filters are required. The minimum allowable
  • bandwidth of the ceramic filters is +/-60 kHz @ 3dB. Narrow bandwidth limits the maximal bit rate.
  • $$$$
  • Note the bit about minimum allowable bandwidth being 60 kHz (a lot higher than a ceramic resonator.
  • And, it seems like the last sentence might be the easiest to grasp. If you used a data rate that was very slow, you could get away with a tighter bandwidth filter so, maybe as a test, you can drop your data rate to maybe 100 bits per second and see it it all comes good.
  • Keep testing using an exclusive transmission connection and only when that shows a good sign of working, try communications over the DC link. The other thing to take away is always dig deep until you have the best data sheets. Neither of the ones you linked were suitable for ascertaining the true bandwidth performance.
  • The [Murata part](https://www.mouser.co.uk/datasheet/2/281/p16e-522700.pdf) you have chosen as a replacement is unsuitable. Its only application is to cheaply replace crystals in oscillators and, as such, it will have a profoundly tight bandwidth (maybe 1 kHz or so) whereas the original filter you linked has a 20 dB bandwidth of 750 kHz (as per the other document you linked).
  • Also, if you read [this data sheet on the original filter you would have liked to use](http://files.rct.ru/pdf/quartz/4.5-6.5m.pdf), it says the 3 dB bandwidth is 60 kHz. And, if you read the data sheet for the chip it says this: -$$$$
  • > 3.1.2 Ceramic Filter Considerations
  • The SIG60 is designed to operate with one ceramic filter for transmission and reception. However, if
  • switching between two channels is desired, two ceramic filters are required. The minimum allowable
  • bandwidth of the ceramic filters is +/-60 kHz @ 3dB. Narrow bandwidth limits the maximal bit rate.
  • $$$$
  • Note the bit about minimum allowable bandwidth being 60 kHz (a lot higher than a ceramic resonator. And, it seems like the last sentence might be the easiest to grasp. If you used a data rate that was very slow, you could get away with a tighter bandwidth filter so, maybe as a test, you can drop your data rate to maybe 100 bits per second and see it it all comes good.
  • Keep testing using an exclusive transmission connection and only when that shows a good sign of working, try communications over the DC link. The other thing to take away is always dig deep until you have the best data sheets. Neither of the ones you linked were suitable for ascertaining the true bandwidth performance.
#4: Post edited by user avatar Andy aka‭ · 2022-10-15T13:45:54Z (over 1 year ago)
  • The [Murata part](https://www.mouser.co.uk/datasheet/2/281/p16e-522700.pdf) you have chosen as a replacement is unsuitable. Its only application is to cheaply replace crystals in oscillators and, as such, it will have a profoundly tight bandwidth (maybe 1 kHz or so) whereas the original filter you linked has a 20 dB bandwidth of 750 kHz (as per the other document you linked).
  • Also, if you read [this data sheet on the original filter you would have liked to use](http://files.rct.ru/pdf/quartz/4.5-6.5m.pdf), it says the 3 dB bandwidth is 60 kHz. And, if you read the data sheet for the chip it says this: -$$$$
  • > 3.1.2 Ceramic Filter Considerations
  • The SIG60 is designed to operate with one ceramic filter for transmission and reception. However, if
  • switching between two channels is desired, two ceramic filters are required. The minimum allowable
  • bandwidth of the ceramic filters is +/-60 kHz @ 3dB. Narrow bandwidth limits the maximal bit rate.
  • Note the bit about minimum allowable bandwidth being 60 kHz (a lot higher than a ceramic resonator.
  • And, it seems like the last sentence might be the easiest to grasp. If you used a data rate that was very slow, you could get away with a tighter bandwidth filter so, maybe as a test, you can drop your data rate to maybe 100 bits per second and see it it all comes good.
  • Keep testing using an exclusive transmission connection and only when that shows a good sign of working, try communications over the DC link. The other thing to take away is always dig deep until you have the best data sheets. Neither of the ones you linked were suitable for ascertaining the true bandwidth performance.
  • The [Murata part](https://www.mouser.co.uk/datasheet/2/281/p16e-522700.pdf) you have chosen as a replacement is unsuitable. Its only application is to cheaply replace crystals in oscillators and, as such, it will have a profoundly tight bandwidth (maybe 1 kHz or so) whereas the original filter you linked has a 20 dB bandwidth of 750 kHz (as per the other document you linked).
  • Also, if you read [this data sheet on the original filter you would have liked to use](http://files.rct.ru/pdf/quartz/4.5-6.5m.pdf), it says the 3 dB bandwidth is 60 kHz. And, if you read the data sheet for the chip it says this: -$$$$
  • > 3.1.2 Ceramic Filter Considerations
  • The SIG60 is designed to operate with one ceramic filter for transmission and reception. However, if
  • switching between two channels is desired, two ceramic filters are required. The minimum allowable
  • bandwidth of the ceramic filters is +/-60 kHz @ 3dB. Narrow bandwidth limits the maximal bit rate.
  • $$$$
  • Note the bit about minimum allowable bandwidth being 60 kHz (a lot higher than a ceramic resonator.
  • And, it seems like the last sentence might be the easiest to grasp. If you used a data rate that was very slow, you could get away with a tighter bandwidth filter so, maybe as a test, you can drop your data rate to maybe 100 bits per second and see it it all comes good.
  • Keep testing using an exclusive transmission connection and only when that shows a good sign of working, try communications over the DC link. The other thing to take away is always dig deep until you have the best data sheets. Neither of the ones you linked were suitable for ascertaining the true bandwidth performance.
#3: Post edited by user avatar Andy aka‭ · 2022-10-15T13:45:28Z (over 1 year ago)
  • The [Murata part](https://www.mouser.co.uk/datasheet/2/281/p16e-522700.pdf) you have chosen as a replacement is unsuitable. Its only application is to cheaply replace crystals in oscillators and, as such, it will have a profoundly tight bandwidth (maybe 1 kHz or so) whereas the original filter you linked has a 20 dB bandwidth of 750 kHz.
  • Also, if you read [this data sheet on the original filter you would have liked to use](http://files.rct.ru/pdf/quartz/4.5-6.5m.pdf), it says the 3 dB bandwidth is 60 kHz. And, if you read the data sheet for the chip it says this: -$$$$
  • > 3.1.2 Ceramic Filter Considerations
  • The SIG60 is designed to operate with one ceramic filter for transmission and reception. However, if
  • switching between two channels is desired, two ceramic filters are required. The minimum allowable
  • bandwidth of the ceramic filters is +/-60 kHz @ 3dB. Narrow bandwidth limits the maximal bit rate.
  • Note the bit about minimum allowable bandwidth being 60 kHz (a lot higher than a ceramic resonator.
  • And, it seems like the last sentence might be the easiest to grasp. If you used a data rate that was very slow, you could get away with a tighter bandwidth filter so, maybe as a test, you can drop your data rate to maybe 100 bits per second and see it it all comes good.
  • Keep testing using an exclusive transmission connection and only when that shows a good sign of working, try communications over the DC link.
  • The [Murata part](https://www.mouser.co.uk/datasheet/2/281/p16e-522700.pdf) you have chosen as a replacement is unsuitable. Its only application is to cheaply replace crystals in oscillators and, as such, it will have a profoundly tight bandwidth (maybe 1 kHz or so) whereas the original filter you linked has a 20 dB bandwidth of 750 kHz (as per the other document you linked).
  • Also, if you read [this data sheet on the original filter you would have liked to use](http://files.rct.ru/pdf/quartz/4.5-6.5m.pdf), it says the 3 dB bandwidth is 60 kHz. And, if you read the data sheet for the chip it says this: -$$$$
  • > 3.1.2 Ceramic Filter Considerations
  • The SIG60 is designed to operate with one ceramic filter for transmission and reception. However, if
  • switching between two channels is desired, two ceramic filters are required. The minimum allowable
  • bandwidth of the ceramic filters is +/-60 kHz @ 3dB. Narrow bandwidth limits the maximal bit rate.
  • Note the bit about minimum allowable bandwidth being 60 kHz (a lot higher than a ceramic resonator.
  • And, it seems like the last sentence might be the easiest to grasp. If you used a data rate that was very slow, you could get away with a tighter bandwidth filter so, maybe as a test, you can drop your data rate to maybe 100 bits per second and see it it all comes good.
  • Keep testing using an exclusive transmission connection and only when that shows a good sign of working, try communications over the DC link. The other thing to take away is always dig deep until you have the best data sheets. Neither of the ones you linked were suitable for ascertaining the true bandwidth performance.
#2: Post edited by user avatar Andy aka‭ · 2022-10-15T13:43:36Z (over 1 year ago)
  • The [Murata part](https://www.mouser.co.uk/datasheet/2/281/p16e-522700.pdf) you have chosen as a replacement is unsuitable. Its only application is to cheaply replace crystals in oscillators and, as such, it will have a profoundly tight bandwidth (maybe 1 kHz or so) whereas the original filter you linked has a 20 dB bandwidth of 800 kHz.
  • If you read the data sheet for the chip it says this: -
  • > 3.1.2 Ceramic Filter Considerations
  • The SIG60 is designed to operate with one ceramic filter for transmission and reception. However, if
  • switching between two channels is desired, two ceramic filters are required. The minimum allowable
  • bandwidth of the ceramic filters is +/-60 kHz @ 3dB. Narrow bandwidth limits the maximal bit rate.
  • And, it seems like the last sentence might be the easiest to grasp. If you used a data rate that was very slow, you could get away with a tighter bandwidth filter so, maybe as a test, you can drop your data rate to maybe 100 bits per second and see it it all comes good.
  • The [Murata part](https://www.mouser.co.uk/datasheet/2/281/p16e-522700.pdf) you have chosen as a replacement is unsuitable. Its only application is to cheaply replace crystals in oscillators and, as such, it will have a profoundly tight bandwidth (maybe 1 kHz or so) whereas the original filter you linked has a 20 dB bandwidth of 750 kHz.
  • Also, if you read [this data sheet on the original filter you would have liked to use](http://files.rct.ru/pdf/quartz/4.5-6.5m.pdf), it says the 3 dB bandwidth is 60 kHz. And, if you read the data sheet for the chip it says this: -$$$$
  • > 3.1.2 Ceramic Filter Considerations
  • The SIG60 is designed to operate with one ceramic filter for transmission and reception. However, if
  • switching between two channels is desired, two ceramic filters are required. The minimum allowable
  • bandwidth of the ceramic filters is +/-60 kHz @ 3dB. Narrow bandwidth limits the maximal bit rate.
  • Note the bit about minimum allowable bandwidth being 60 kHz (a lot higher than a ceramic resonator.
  • And, it seems like the last sentence might be the easiest to grasp. If you used a data rate that was very slow, you could get away with a tighter bandwidth filter so, maybe as a test, you can drop your data rate to maybe 100 bits per second and see it it all comes good.
  • Keep testing using an exclusive transmission connection and only when that shows a good sign of working, try communications over the DC link.
#1: Initial revision by user avatar Andy aka‭ · 2022-10-15T13:38:43Z (over 1 year ago) 
The [Murata part](https://www.mouser.co.uk/datasheet/2/281/p16e-522700.pdf) you have chosen as a replacement is unsuitable. Its only application is to cheaply replace crystals in oscillators and, as such, it will have a profoundly tight bandwidth (maybe 1 kHz or so) whereas the original filter you linked has a 20 dB bandwidth of 800 kHz.

If you read the data sheet for the chip it says this: -


 > 3.1.2 Ceramic Filter Considerations
The SIG60 is designed to operate with one ceramic filter for transmission and reception. However, if
switching between two channels is desired, two ceramic filters are required. The minimum allowable
bandwidth of the ceramic filters is +/-60 kHz @ 3dB. Narrow bandwidth limits the maximal bit rate. 

And, it seems like the last sentence might be the easiest to grasp. If you used a data rate that was very slow, you could get away with a tighter bandwidth filter so, maybe as a test, you can drop your data rate to maybe 100 bits per second and see it it all comes good.