I make a TDA1514A AMP, Is there any brother do that?

guaxian · 2013-05-07 10:08 am

How is TDA1514 IC's audio?
I hear from firends that's a good IC, so I start to make,
Now I am await for the TDA1514A IC, I buy from webshop.
attach the picture here.

PhilippeS · 2013-05-07 10:40 am

I did one and yes, very good sound.
Just becare of switch off noise "Poc" (no delay inside).

Philippe

atupi · 2013-05-07 10:45 am

It's a really good souning IC but i doubt you can still find the original ones and you will use a fake one.

PhilippeS · 2013-05-07 12:46 pm

You can found it in old Philips TV, like I do.

NOS are expensive in Europa :
Ampli Audio HiFi 40W TDA 1514 A SIL-9 - Elecdif.com

PhilippeS · 2013-05-07 1:49 pm

In all TV PHILIPS with 3A chassis

abraxalito · 2013-05-08 3:30 am

I haven't heard this particular chip in a top flight implementation (I have an old Cambridge Audio amp which uses it but that implementation sucks). Its brother and sister chips with similar internal design sound wonderful when given a decent PSU. Suggest you uprate the PSU you have on those PCBs you're showing...

guaxian · 2013-05-08 11:10 am

I am tired to find the original IC, I sourcing from webshop and buy the second hand TDA1514, it type MADE IN TAIWAN

guaxian · 2013-05-09 5:40 am

Yesterday, I contacnt the 1514A with AC 18V, one chanel is broken, other chanel out put 0.7V DC, IoI

JMFahey · 2013-05-09 12:49 pm

Why did you choose to build an obsolete unavailable amplifier when there are thousands of available alternatives?

guaxian · 2013-05-09 10:54 pm

JMFahey said:
Why did you choose to build an obsolete unavailable amplifier when there are thousands of available alternatives?

you means I should not make
TDA1514A?
could you devise me some available drawing?

JMFahey · 2013-05-10 12:55 am

I'm not complaining about TDA1514 *quality* which is good but its *availability*.
Make an LM3886 amp instead.

Good, cheap, lots of PCBs and kits to choose from.

And you can still use the PSU you made for TDA1514, in which case it will put out about the same power.

EDIT: you can probably use the same heatsink too, although with new holes, and of course, same case. Good

guaxian · 2013-05-11 12:30 am

I dont like 3886 style, more interesting in PHILIPS TDA1521 and 1541.
go on to buy new 1514 chip to make(^_^)Y

JMFahey · 2013-05-11 12:53 am

Well, making an amplifier with a TDA1541 will *definitely* be interesting

andrewlebon · 2013-05-11 1:05 am

TDA1514

andrewlebon · 2013-05-11 1:10 am

3Ow+3Ow Stereo Amplifier 1988Sep. ELECTRONICS AUSTRALIA complete amp with bass treble and pcb design maybe some one can post files very nice sound
warm regards
andrew lebon

abraxalito · 2013-05-11 2:32 am

guaxian said:
I dont like 3886 style, more interesting in PHILIPS TDA1521 and 1541.

I agree that LM3886 sound sucks in comparison to the Philips chip family (I'm playing with TDA8566). I suspect there's a sound technical reason for this - PSRR at higher freqs on the Philips chips smokes the LM.

JMFahey · 2013-05-11 5:46 am

Now all you need is a time machine to go back to 1988 and everything will be fine

abraxalito · 2013-05-11 9:19 am

Ah but way back in 1988 decoupling these chips was a much bigger challenge as high value (class 2) SMT ceramics had yet to be made freely available on the market at a reasonable price.

EsoBOFH · 2014-01-14 5:02 am

guaxian said:
How is TDA1514 IC's audio?
I hear from firends that's a good IC, so I start to make,
Now I am await for the TDA1514A IC, I buy from webshop.
attach the picture here.

Guaxian - are you feeding ac voltage to these boards separately, then rectifying it with those diodes to get the required dc voltage to those caps?

AudioLapDance · 2014-06-28 1:25 pm

TDA1514 info dump

TDA1514A data sheet:

View attachment TDA1514A.pdf

GENERAL DESCRIPTION

The TDA1514A integrated circuit is a hi-fi power amplifier for use as a building block in radio, tv and other audio applications. The high performance of the IC meets the requirements of digital sources (e.g. Compact Disc equipment). The circuit is totally protected, the two output transistors both having thermal and SOAR protection (see Fig.3). The circuit also has a mute function that can be arranged for a period after power-on with a delay time fixed by external components. The device is intended for symmetrical power supplies but an asymmetrical supply may also be used.

Features

· High output power
· Low harmonic distortion
· Low intermodulation distortion
· Low offset voltage
· Good ripple rejection
· Mute/stand-by facilities
· Thermal protection
· Protected against electrostatic discharge
· No switch-on or switch-off clicks
· Very low thermal resistance
· Safe Operating Area (SOAR) protection.

TDA1514A block diagram: