Audio Conversion With ADS1243
$begingroup$
How can I use the TI ADS1243 8-channel ADC to convert a line-level audio signal (ideally balanced) to a digital 24-bit (as stated on data-sheet) stream.
audio texas-instruments
$endgroup$
add a comment |
$begingroup$
How can I use the TI ADS1243 8-channel ADC to convert a line-level audio signal (ideally balanced) to a digital 24-bit (as stated on data-sheet) stream.
audio texas-instruments
$endgroup$
add a comment |
$begingroup$
How can I use the TI ADS1243 8-channel ADC to convert a line-level audio signal (ideally balanced) to a digital 24-bit (as stated on data-sheet) stream.
audio texas-instruments
$endgroup$
How can I use the TI ADS1243 8-channel ADC to convert a line-level audio signal (ideally balanced) to a digital 24-bit (as stated on data-sheet) stream.
audio texas-instruments
audio texas-instruments
asked 7 hours ago
James ConwayJames Conway
1247
1247
add a comment |
add a comment |
4 Answers
4
active
oldest
votes
$begingroup$
You can't. The datasheet is surprisingly vague on this point, but this is a low-speed ADC, intended for instrumentation applications. The analog bandwidth is just a few tens of Hz at most.
$endgroup$
add a comment |
$begingroup$
You don't.
The ADS1243 datasheet gives an analog bandwidth of maximum 14.6 Hz.
That's well below what anyone would normally call audio.
The ADS1243 is intended for high resolution sampling of slow changing measurements - the datasheet mentions weight scales and blood analysis as intended uses.
Certainly nothing about using it in a stereo system.
There are multichannel 24 bit audio codecs out there. The ADS1243 isn't one of them, though.
$endgroup$
$begingroup$
Do you know of any "multichannel 24 bit audio codecs"
$endgroup$
– James Conway
6 hours ago
1
$begingroup$
Google barfed up a long list when I used that search term. Also, check Mouser or Digikey using those keywords. I've never built anything that needed such a beast.
$endgroup$
– JRE
6 hours ago
1
$begingroup$
Something like this is the wildest I've ever used. Also low speed. The biggest difficulty you will have is in actually making use of 24 bits. It can be a challenge to keep noise and crosstalk down to the point that those 24 bits represent signal instead of noise.
$endgroup$
– JRE
6 hours ago
$begingroup$
Something like mouser.co.uk/Texas-Instruments/Semiconductors/Interface-ICs/… be suitable?
$endgroup$
– James Conway
6 hours ago
add a comment |
$begingroup$
From the datasheet
When a 2.4576MHz crystal is used, the device can be programmed for an output data rate of 15Hz, 7.5Hz, or 3.75Hz. Under these conditions, the digital filter rejects both 50Hz and 60Hz interference.
With a maximum datarate of 15Hz, I think you can kiss audio goodbye
$endgroup$
$begingroup$
Perfect for recordings of whalesong.
$endgroup$
– Hearth
3 hours ago
add a comment |
$begingroup$
The ADS1234 is a part designed for use in low bandwidth high resolution sensor sampling applications. In particular bridge style sensors are supported where gain is applied to the sensor reading and even 50/60 Hz filtering is performed. It indicates right in the "Features" section of the data sheet that signal sample rates of 10 or 80 samples per second are supported.
Audio sampling on the other hand is done at much higher rates. High performance audio sampling for CD is typically done at 44.1kHz and DVD at 48kHz. So as you can see, this device is not at all suitable for what you intend.
$endgroup$
1
$begingroup$
Okay, I have to ask, how did you do that cut effect in your image there? Do you use some screenshot software that automates it, or did you do it manually?
$endgroup$
– Hearth
3 hours ago
$begingroup$
@Hearth - It is done manually in Microsoft Paint program. I could describe the steps that make it easy to if you are really interested.
$endgroup$
– Michael Karas
1 hour ago
$begingroup$
Nah, I can see how to do it manually. I was just wondering if you had some quick and easy way to do it. Thanks!
$endgroup$
– Hearth
24 mins ago
$begingroup$
Well my technique does not require me to do tedious manual erase of the text.
$endgroup$
– Michael Karas
48 secs ago
add a comment |
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4 Answers
4
active
oldest
votes
4 Answers
4
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
You can't. The datasheet is surprisingly vague on this point, but this is a low-speed ADC, intended for instrumentation applications. The analog bandwidth is just a few tens of Hz at most.
$endgroup$
add a comment |
$begingroup$
You can't. The datasheet is surprisingly vague on this point, but this is a low-speed ADC, intended for instrumentation applications. The analog bandwidth is just a few tens of Hz at most.
$endgroup$
add a comment |
$begingroup$
You can't. The datasheet is surprisingly vague on this point, but this is a low-speed ADC, intended for instrumentation applications. The analog bandwidth is just a few tens of Hz at most.
$endgroup$
You can't. The datasheet is surprisingly vague on this point, but this is a low-speed ADC, intended for instrumentation applications. The analog bandwidth is just a few tens of Hz at most.
edited 5 hours ago
answered 6 hours ago
Dave Tweed♦Dave Tweed
123k9152265
123k9152265
add a comment |
add a comment |
$begingroup$
You don't.
The ADS1243 datasheet gives an analog bandwidth of maximum 14.6 Hz.
That's well below what anyone would normally call audio.
The ADS1243 is intended for high resolution sampling of slow changing measurements - the datasheet mentions weight scales and blood analysis as intended uses.
Certainly nothing about using it in a stereo system.
There are multichannel 24 bit audio codecs out there. The ADS1243 isn't one of them, though.
$endgroup$
$begingroup$
Do you know of any "multichannel 24 bit audio codecs"
$endgroup$
– James Conway
6 hours ago
1
$begingroup$
Google barfed up a long list when I used that search term. Also, check Mouser or Digikey using those keywords. I've never built anything that needed such a beast.
$endgroup$
– JRE
6 hours ago
1
$begingroup$
Something like this is the wildest I've ever used. Also low speed. The biggest difficulty you will have is in actually making use of 24 bits. It can be a challenge to keep noise and crosstalk down to the point that those 24 bits represent signal instead of noise.
$endgroup$
– JRE
6 hours ago
$begingroup$
Something like mouser.co.uk/Texas-Instruments/Semiconductors/Interface-ICs/… be suitable?
$endgroup$
– James Conway
6 hours ago
add a comment |
$begingroup$
You don't.
The ADS1243 datasheet gives an analog bandwidth of maximum 14.6 Hz.
That's well below what anyone would normally call audio.
The ADS1243 is intended for high resolution sampling of slow changing measurements - the datasheet mentions weight scales and blood analysis as intended uses.
Certainly nothing about using it in a stereo system.
There are multichannel 24 bit audio codecs out there. The ADS1243 isn't one of them, though.
$endgroup$
$begingroup$
Do you know of any "multichannel 24 bit audio codecs"
$endgroup$
– James Conway
6 hours ago
1
$begingroup$
Google barfed up a long list when I used that search term. Also, check Mouser or Digikey using those keywords. I've never built anything that needed such a beast.
$endgroup$
– JRE
6 hours ago
1
$begingroup$
Something like this is the wildest I've ever used. Also low speed. The biggest difficulty you will have is in actually making use of 24 bits. It can be a challenge to keep noise and crosstalk down to the point that those 24 bits represent signal instead of noise.
$endgroup$
– JRE
6 hours ago
$begingroup$
Something like mouser.co.uk/Texas-Instruments/Semiconductors/Interface-ICs/… be suitable?
$endgroup$
– James Conway
6 hours ago
add a comment |
$begingroup$
You don't.
The ADS1243 datasheet gives an analog bandwidth of maximum 14.6 Hz.
That's well below what anyone would normally call audio.
The ADS1243 is intended for high resolution sampling of slow changing measurements - the datasheet mentions weight scales and blood analysis as intended uses.
Certainly nothing about using it in a stereo system.
There are multichannel 24 bit audio codecs out there. The ADS1243 isn't one of them, though.
$endgroup$
You don't.
The ADS1243 datasheet gives an analog bandwidth of maximum 14.6 Hz.
That's well below what anyone would normally call audio.
The ADS1243 is intended for high resolution sampling of slow changing measurements - the datasheet mentions weight scales and blood analysis as intended uses.
Certainly nothing about using it in a stereo system.
There are multichannel 24 bit audio codecs out there. The ADS1243 isn't one of them, though.
answered 6 hours ago
JREJRE
22.5k53773
22.5k53773
$begingroup$
Do you know of any "multichannel 24 bit audio codecs"
$endgroup$
– James Conway
6 hours ago
1
$begingroup$
Google barfed up a long list when I used that search term. Also, check Mouser or Digikey using those keywords. I've never built anything that needed such a beast.
$endgroup$
– JRE
6 hours ago
1
$begingroup$
Something like this is the wildest I've ever used. Also low speed. The biggest difficulty you will have is in actually making use of 24 bits. It can be a challenge to keep noise and crosstalk down to the point that those 24 bits represent signal instead of noise.
$endgroup$
– JRE
6 hours ago
$begingroup$
Something like mouser.co.uk/Texas-Instruments/Semiconductors/Interface-ICs/… be suitable?
$endgroup$
– James Conway
6 hours ago
add a comment |
$begingroup$
Do you know of any "multichannel 24 bit audio codecs"
$endgroup$
– James Conway
6 hours ago
1
$begingroup$
Google barfed up a long list when I used that search term. Also, check Mouser or Digikey using those keywords. I've never built anything that needed such a beast.
$endgroup$
– JRE
6 hours ago
1
$begingroup$
Something like this is the wildest I've ever used. Also low speed. The biggest difficulty you will have is in actually making use of 24 bits. It can be a challenge to keep noise and crosstalk down to the point that those 24 bits represent signal instead of noise.
$endgroup$
– JRE
6 hours ago
$begingroup$
Something like mouser.co.uk/Texas-Instruments/Semiconductors/Interface-ICs/… be suitable?
$endgroup$
– James Conway
6 hours ago
$begingroup$
Do you know of any "multichannel 24 bit audio codecs"
$endgroup$
– James Conway
6 hours ago
$begingroup$
Do you know of any "multichannel 24 bit audio codecs"
$endgroup$
– James Conway
6 hours ago
1
1
$begingroup$
Google barfed up a long list when I used that search term. Also, check Mouser or Digikey using those keywords. I've never built anything that needed such a beast.
$endgroup$
– JRE
6 hours ago
$begingroup$
Google barfed up a long list when I used that search term. Also, check Mouser or Digikey using those keywords. I've never built anything that needed such a beast.
$endgroup$
– JRE
6 hours ago
1
1
$begingroup$
Something like this is the wildest I've ever used. Also low speed. The biggest difficulty you will have is in actually making use of 24 bits. It can be a challenge to keep noise and crosstalk down to the point that those 24 bits represent signal instead of noise.
$endgroup$
– JRE
6 hours ago
$begingroup$
Something like this is the wildest I've ever used. Also low speed. The biggest difficulty you will have is in actually making use of 24 bits. It can be a challenge to keep noise and crosstalk down to the point that those 24 bits represent signal instead of noise.
$endgroup$
– JRE
6 hours ago
$begingroup$
Something like mouser.co.uk/Texas-Instruments/Semiconductors/Interface-ICs/… be suitable?
$endgroup$
– James Conway
6 hours ago
$begingroup$
Something like mouser.co.uk/Texas-Instruments/Semiconductors/Interface-ICs/… be suitable?
$endgroup$
– James Conway
6 hours ago
add a comment |
$begingroup$
From the datasheet
When a 2.4576MHz crystal is used, the device can be programmed for an output data rate of 15Hz, 7.5Hz, or 3.75Hz. Under these conditions, the digital filter rejects both 50Hz and 60Hz interference.
With a maximum datarate of 15Hz, I think you can kiss audio goodbye
$endgroup$
$begingroup$
Perfect for recordings of whalesong.
$endgroup$
– Hearth
3 hours ago
add a comment |
$begingroup$
From the datasheet
When a 2.4576MHz crystal is used, the device can be programmed for an output data rate of 15Hz, 7.5Hz, or 3.75Hz. Under these conditions, the digital filter rejects both 50Hz and 60Hz interference.
With a maximum datarate of 15Hz, I think you can kiss audio goodbye
$endgroup$
$begingroup$
Perfect for recordings of whalesong.
$endgroup$
– Hearth
3 hours ago
add a comment |
$begingroup$
From the datasheet
When a 2.4576MHz crystal is used, the device can be programmed for an output data rate of 15Hz, 7.5Hz, or 3.75Hz. Under these conditions, the digital filter rejects both 50Hz and 60Hz interference.
With a maximum datarate of 15Hz, I think you can kiss audio goodbye
$endgroup$
From the datasheet
When a 2.4576MHz crystal is used, the device can be programmed for an output data rate of 15Hz, 7.5Hz, or 3.75Hz. Under these conditions, the digital filter rejects both 50Hz and 60Hz interference.
With a maximum datarate of 15Hz, I think you can kiss audio goodbye
answered 6 hours ago
Neil_UKNeil_UK
78.4k284181
78.4k284181
$begingroup$
Perfect for recordings of whalesong.
$endgroup$
– Hearth
3 hours ago
add a comment |
$begingroup$
Perfect for recordings of whalesong.
$endgroup$
– Hearth
3 hours ago
$begingroup$
Perfect for recordings of whalesong.
$endgroup$
– Hearth
3 hours ago
$begingroup$
Perfect for recordings of whalesong.
$endgroup$
– Hearth
3 hours ago
add a comment |
$begingroup$
The ADS1234 is a part designed for use in low bandwidth high resolution sensor sampling applications. In particular bridge style sensors are supported where gain is applied to the sensor reading and even 50/60 Hz filtering is performed. It indicates right in the "Features" section of the data sheet that signal sample rates of 10 or 80 samples per second are supported.
Audio sampling on the other hand is done at much higher rates. High performance audio sampling for CD is typically done at 44.1kHz and DVD at 48kHz. So as you can see, this device is not at all suitable for what you intend.
$endgroup$
1
$begingroup$
Okay, I have to ask, how did you do that cut effect in your image there? Do you use some screenshot software that automates it, or did you do it manually?
$endgroup$
– Hearth
3 hours ago
$begingroup$
@Hearth - It is done manually in Microsoft Paint program. I could describe the steps that make it easy to if you are really interested.
$endgroup$
– Michael Karas
1 hour ago
$begingroup$
Nah, I can see how to do it manually. I was just wondering if you had some quick and easy way to do it. Thanks!
$endgroup$
– Hearth
24 mins ago
$begingroup$
Well my technique does not require me to do tedious manual erase of the text.
$endgroup$
– Michael Karas
48 secs ago
add a comment |
$begingroup$
The ADS1234 is a part designed for use in low bandwidth high resolution sensor sampling applications. In particular bridge style sensors are supported where gain is applied to the sensor reading and even 50/60 Hz filtering is performed. It indicates right in the "Features" section of the data sheet that signal sample rates of 10 or 80 samples per second are supported.
Audio sampling on the other hand is done at much higher rates. High performance audio sampling for CD is typically done at 44.1kHz and DVD at 48kHz. So as you can see, this device is not at all suitable for what you intend.
$endgroup$
1
$begingroup$
Okay, I have to ask, how did you do that cut effect in your image there? Do you use some screenshot software that automates it, or did you do it manually?
$endgroup$
– Hearth
3 hours ago
$begingroup$
@Hearth - It is done manually in Microsoft Paint program. I could describe the steps that make it easy to if you are really interested.
$endgroup$
– Michael Karas
1 hour ago
$begingroup$
Nah, I can see how to do it manually. I was just wondering if you had some quick and easy way to do it. Thanks!
$endgroup$
– Hearth
24 mins ago
$begingroup$
Well my technique does not require me to do tedious manual erase of the text.
$endgroup$
– Michael Karas
48 secs ago
add a comment |
$begingroup$
The ADS1234 is a part designed for use in low bandwidth high resolution sensor sampling applications. In particular bridge style sensors are supported where gain is applied to the sensor reading and even 50/60 Hz filtering is performed. It indicates right in the "Features" section of the data sheet that signal sample rates of 10 or 80 samples per second are supported.
Audio sampling on the other hand is done at much higher rates. High performance audio sampling for CD is typically done at 44.1kHz and DVD at 48kHz. So as you can see, this device is not at all suitable for what you intend.
$endgroup$
The ADS1234 is a part designed for use in low bandwidth high resolution sensor sampling applications. In particular bridge style sensors are supported where gain is applied to the sensor reading and even 50/60 Hz filtering is performed. It indicates right in the "Features" section of the data sheet that signal sample rates of 10 or 80 samples per second are supported.
Audio sampling on the other hand is done at much higher rates. High performance audio sampling for CD is typically done at 44.1kHz and DVD at 48kHz. So as you can see, this device is not at all suitable for what you intend.
answered 6 hours ago
Michael KarasMichael Karas
45k348104
45k348104
1
$begingroup$
Okay, I have to ask, how did you do that cut effect in your image there? Do you use some screenshot software that automates it, or did you do it manually?
$endgroup$
– Hearth
3 hours ago
$begingroup$
@Hearth - It is done manually in Microsoft Paint program. I could describe the steps that make it easy to if you are really interested.
$endgroup$
– Michael Karas
1 hour ago
$begingroup$
Nah, I can see how to do it manually. I was just wondering if you had some quick and easy way to do it. Thanks!
$endgroup$
– Hearth
24 mins ago
$begingroup$
Well my technique does not require me to do tedious manual erase of the text.
$endgroup$
– Michael Karas
48 secs ago
add a comment |
1
$begingroup$
Okay, I have to ask, how did you do that cut effect in your image there? Do you use some screenshot software that automates it, or did you do it manually?
$endgroup$
– Hearth
3 hours ago
$begingroup$
@Hearth - It is done manually in Microsoft Paint program. I could describe the steps that make it easy to if you are really interested.
$endgroup$
– Michael Karas
1 hour ago
$begingroup$
Nah, I can see how to do it manually. I was just wondering if you had some quick and easy way to do it. Thanks!
$endgroup$
– Hearth
24 mins ago
$begingroup$
Well my technique does not require me to do tedious manual erase of the text.
$endgroup$
– Michael Karas
48 secs ago
1
1
$begingroup$
Okay, I have to ask, how did you do that cut effect in your image there? Do you use some screenshot software that automates it, or did you do it manually?
$endgroup$
– Hearth
3 hours ago
$begingroup$
Okay, I have to ask, how did you do that cut effect in your image there? Do you use some screenshot software that automates it, or did you do it manually?
$endgroup$
– Hearth
3 hours ago
$begingroup$
@Hearth - It is done manually in Microsoft Paint program. I could describe the steps that make it easy to if you are really interested.
$endgroup$
– Michael Karas
1 hour ago
$begingroup$
@Hearth - It is done manually in Microsoft Paint program. I could describe the steps that make it easy to if you are really interested.
$endgroup$
– Michael Karas
1 hour ago
$begingroup$
Nah, I can see how to do it manually. I was just wondering if you had some quick and easy way to do it. Thanks!
$endgroup$
– Hearth
24 mins ago
$begingroup$
Nah, I can see how to do it manually. I was just wondering if you had some quick and easy way to do it. Thanks!
$endgroup$
– Hearth
24 mins ago
$begingroup$
Well my technique does not require me to do tedious manual erase of the text.
$endgroup$
– Michael Karas
48 secs ago
$begingroup$
Well my technique does not require me to do tedious manual erase of the text.
$endgroup$
– Michael Karas
48 secs ago
add a comment |
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