Tiny amps (SSM2211, LM4871, TPA0211)

sync40 · 2nd November 2005, 01:32 AM

Hi to everybody.

I would like to know your impressions about all three tiny amps. I am planning to use one of them since they can deliver it´s power at +5 volts. However, I would like to know if someone has tried any of them. My main concern is if it could deliver the power of a TDA2003, running at +12 volts, with an 8-ohm speaker. Thank you very much for any help.

neutron7 · 2nd November 2005, 05:30 AM

i think you will be dissapointed with it, it hink it would be used for something like built in speakers on a laptop or monitor, toys, or a cheap clock radio.

the TDA although not great is a lot better then those tiny amps (well the LM4871 is the one i know about maybe the others are better?)

Leolabs · 4th November 2005, 06:04 AM

Dont like them much as they are operated at single supply voltage.

sync40 · 4th November 2005, 07:35 PM

Thank you for your replys.

In fact I am planning to use them for a low-quality audio application to provide pre-recorded sounds at 5 KHz sampled frequency for robotics experimentation, so it fit well the single supply +5 volt requirement.

At present I am using a TDA2003 with +12 volts supply and 8 ohms speaker, which accrodingly to the datasheet should provide 2 watts of power.

I am wondering if it will be too much difference in power output from 2 watts to 1.3 watts (and of course it is not a critical application, but I do not want to sound it like a little LM386).

karthikrajg · 5th November 2005, 02:18 PM

Hi Sync,

I have used this SSM2211 and i should say that i was very much dissapointed with the start-up current it takes. Also its efficiency is rated somewhere around 75% (Please check it). If you dont have any concerns about using a class D amp, then i suggest u go for a TPA2005. It also delivers around 1W power and is much better.

Regards,
Karthik

2nd November 2005, 01:32 AM	#1
sync40 diyAudio Member Join Date: Mar 2005 Location: Mexico	Tiny amps (SSM2211, LM4871, TPA0211) Hi to everybody. I would like to know your impressions about all three tiny amps. I am planning to use one of them since they can deliver it´s power at +5 volts. However, I would like to know if someone has tried any of them. My main concern is if it could deliver the power of a TDA2003, running at +12 volts, with an 8-ohm speaker. Thank you very much for any help.

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2nd November 2005, 05:30 AM	#2
neutron7 diyAudio Member Join Date: Dec 2003 Location: Toronto Canada	i think you will be dissapointed with it, it hink it would be used for something like built in speakers on a laptop or monitor, toys, or a cheap clock radio. the TDA although not great is a lot better then those tiny amps (well the LM4871 is the one i know about maybe the others are better?)

4th November 2005, 06:04 AM	#3
Leolabs diyAudio Member Join Date: Dec 2004 Location: Bukit Mertajam	Dont like them much as they are operated at single supply voltage.

4th November 2005, 07:35 PM	#4
sync40 diyAudio Member Join Date: Mar 2005 Location: Mexico	Thank you for your replys. In fact I am planning to use them for a low-quality audio application to provide pre-recorded sounds at 5 KHz sampled frequency for robotics experimentation, so it fit well the single supply +5 volt requirement. At present I am using a TDA2003 with +12 volts supply and 8 ohms speaker, which accrodingly to the datasheet should provide 2 watts of power. I am wondering if it will be too much difference in power output from 2 watts to 1.3 watts (and of course it is not a critical application, but I do not want to sound it like a little LM386).

5th November 2005, 02:18 PM	#5
karthikrajg diyAudio Member Join Date: Jul 2005 Location: Bangalore	Hi Sync, I have used this SSM2211 and i should say that i was very much dissapointed with the start-up current it takes. Also its efficiency is rated somewhere around 75% (Please check it). If you dont have any concerns about using a class D amp, then i suggest u go for a TPA2005. It also delivers around 1W power and is much better. Regards, Karthik

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