# Suitable IC replacement for TDA7052

#### mangyver5223

Joined Oct 22, 2011
17
Hi, I would like to asking to all of you about this: I and my friend want to finish our University's final year project and we choose Voice Changer circuit as our project. The main problem was, an IC named TDA7052 wasn't available at our local electronic store. So,can all of you tell what suitable IC that could replace TDA 7052 IC? Thank You.

Details was here: http://redcircuits.com/Page112.htm

#### t06afre

Joined May 11, 2009
5,934
I think any low power audio amplifier will do. What kind of low power adio amps do your local store have in stock?

#### Audioguru

Joined Dec 20, 2007
11,251
For your University's final year project you are simply copying the design from somebody else? Shouldn't you be able to design your own circuit and select a replacement little power amplifier IC?

Today, Digikey has 3543 TDA7052A ICs with the through-hole pins in stock for $1.25US each. The TDA7052A adds a DC volume control to a TDA7052. With a 9V supply, the TDA7052 or TDA7052A has an output of about 1W into an 8 ohm speaker. You can use a TDA2822M IC which is similar and it has an output of about 0.9W. Today, Digikey has 1131 TDA2822M ICs in stock for$1.62US each.

With a 9V supply, an LM386 little power amplifier has an output of 0.45W. It will sound slightly less as loud as the other two amplifiers. Today, Digikey has 9311 LM386 ICs in stock for $1.25US each. If I order an IC by phone or online before 8:00PM then it is delivered to me the next morning. #### Attachments • 27.6 KB Views: 141 Thread Starter #### mangyver5223 Joined Oct 22, 2011 17 I think any low power audio amplifier will do. What kind of low power adio amps do your local store have in stock? actually I didn't really know what types of this IC available at my local store. Do you know what usual model number of this IC used for any audio-based projects? Thread Starter #### mangyver5223 Joined Oct 22, 2011 17 For your University's final year project you are simply copying the design from somebody else? Shouldn't you be able to design your own circuit and select a replacement little power amplifier IC? Today, Digikey has 3543 TDA7052A ICs with the through-hole pins in stock for$1.25US each. The TDA7052A adds a DC volume control to a TDA7052.

With a 9V supply, the TDA7052 or TDA7052A has an output of about 1W into an 8 ohm speaker. You can use a TDA2822M IC which is similar and it has an output of about 0.9W. Today, Digikey has 1131 TDA2822M ICs in stock for $1.62US each. With a 9V supply, an LM386 little power amplifier has an output of 0.45W. It will sound slightly less as loud as the other two amplifiers. Today, Digikey has 9311 LM386 ICs in stock for$1.25US each.

If I order an IC by phone or online before 8:00PM then it is delivered to me the next morning.
Nope,nope,sir.... I'm not kind of people that like to copy and paste...I already do the modifications on the circuit so the functions can be enhaced . If you have any other 1 W IC or nearly that value that you may know, kindly share with me Thank you

#### mangyver5223

Joined Oct 22, 2011
17
The thing was this IC can be replaced with any 1W audio amplifier is it?

#### t06afre

Joined May 11, 2009
5,934
The thing was this IC can be replaced with any 1W audio amplifier is it?
Yes as long as it can use 9 volt power/battery. It should work Since I do not know what your local store have or do not have I can not recommend a replacement

#### mangyver5223

Joined Oct 22, 2011
17

#### mangyver5223

Joined Oct 22, 2011
17
You found a TDA7052A made by NXP (formerly called Philips). It has a DC volume control so it is a little different from the TDA7052 shown in the original project. Its datasheet shows how to use it.
Although it was a little bit different from the original one, will it affect circuit operation if this IC used?

#### Audioguru

Joined Dec 20, 2007
11,251
Although it was a little bit different from the original one, will it affect circuit operation if this IC used?
You simply must read about how to turn up its DC volume control. It is shown in figure 7 of the datasheet.

#### mangyver5223

Joined Oct 22, 2011
17