I bought some tda 1543 of ebay a few months ago and it differs from another build up board that is also from china.
They are very different .
Which is the real thing ???
I breadboard the tda 1543 and unable to get it to play. Input is 7 V dc and i measure 3.5 V dc at the AOL and AOR. Is this correct??
The reference resistor is 1 K.the IV resistor is 1.5 K.
when i play music i get white noise that sound like between 2 FM radio station .
thanks for the help
kp93300
They are very different .
Which is the real thing ???
I breadboard the tda 1543 and unable to get it to play. Input is 7 V dc and i measure 3.5 V dc at the AOL and AOR. Is this correct??
The reference resistor is 1 K.the IV resistor is 1.5 K.
when i play music i get white noise that sound like between 2 FM radio station .
thanks for the help
kp93300
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After bad experiences with ebay semiconductors I no longer buy them off ebay.
I stick to reputable dealers like RS and Farnell.
I stick to reputable dealers like RS and Farnell.
TDA 1543 is no longer stocked by element14 ot Rs on line
I use amanero usb to i2s converter to feed the i2s line. It uses 22.5792 and 24.576 TCXO. Is this an issue with TDA 1543 ??
I use amanero usb to i2s converter to feed the i2s line. It uses 22.5792 and 24.576 TCXO. Is this an issue with TDA 1543 ??
I don't know about amanero. But but you need to make sure i2s format are 16 bit (24bit works to)
Didiet
Didiet
I have checked the boxes under the driver in windows 8 outputting 16 bit, 22.1 or 48 files..
with a 7Vdc input, i measure 3.5 V dc at AOR and AOL.
With the Ref resistor at 1.2k , i measure 2.1 v dc at the V ref .
are these correct values ??
with a 7Vdc input, i measure 3.5 V dc at AOR and AOL.
With the Ref resistor at 1.2k , i measure 2.1 v dc at the V ref .
are these correct values ??
In fact i have also tried with a another usb i2s converter based on Tenor 7022 chip.. same problem
For a 7V supply you need Rref of 1k or 1.1k - see my web page. Use the wrong values and you are relying on chip parameter tolerances, so some chips will work and others will not.
Vref should be about the same voltage whatever you use for Rref - it is a reference voltage!
Vref should be about the same voltage whatever you use for Rref - it is a reference voltage!
hi,
I have visit you webpage. I have also bought some TDA1543 by Ebay and
only noise. so these are not fake?
I don't know which are fake. If you use the wrong resistor values and get no sound then this does not necessarily mean they are fake, as some good ones might not work with the wrong values.
ok, from DIR9001 to TDA 1543 pin 1/2/3, i use 33R
4 and 5 are VCC and GND. from 8/7 i use 680R
i use it passive do you need an schematic?
There is only on datasheet of the TDA
Last night , i tried v ref resistor at 1K and the Iv resistor at 1K.
Same problem of white noise .
anyway, i have ordered more TDA for testing. i hope the TDA made in thailand are genuine.
Same problem of white noise .
anyway, i have ordered more TDA for testing. i hope the TDA made in thailand are genuine.
That ought to work for most supply voltages. Maybe your chips are faulty, or fake.kp93300 said:
That is likely to give you some peak clipping on 'fully recorded' CDs. At lower signal levels it should work fine. 1K2 Rref and 1K5 I/V would put you within the datasheet envelope.didiet78 said:
My TDA1543 and TDA1545
I buy 1543 on Bella Audio (Indonesia) few year ago
Didiet
I buy 1543 on Bella Audio (Indonesia) few year ago
Didiet
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Hi didiet,
nice build. are you using an iv converter ? If yes, can you share the schematic ?
the picture of the tda 1543 is very helpful .
I have assembled the rbw iv conveter posted somewhere in diy audio. It is not working yet.
kp93300
nice build. are you using an iv converter ? If yes, can you share the schematic ?
the picture of the tda 1543 is very helpful .
I have assembled the rbw iv conveter posted somewhere in diy audio. It is not working yet.
kp93300
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