On Fri, 28 Oct 2016 09:00:01 +1000, TTman <pcw1.cad@ntlworld.com> wrote:> On 27/10/2016 22:22, boB wrote: >> >> >> >> This part, an 8 pin bridgable 1W audio amplifier with volume control >> input is going obsolete and last order date is end of this year. >> >> When I designed it in around 10 years ago they were old then but >> plenty available. We will eventually need to design in a replacement. >> >> We are running these at around 9V VCC and they work great into a small >> speaker. 8 Ohms I believe. >> >> We also use the volume control input... +40 dB gain down to -60 or 80 >> dB gain. Doesn't require that much gain necessarily. >> >> There is the old National/TI LM386-4 that I just now heard is going >> obsolete ! Dang. It looked like it was going to work. >> >> Could go discreet with op-amp and SOT-23s but still wouldn't have the >> volume/gain control pin without adding a Jfet or something and would >> take up valuable space on one of the existing products. >> >> Any suggestions ? >> >> Thanks, >> boB >> K7IQ >> >> >> http://www.nxp.com/documents/data_sheet/TDA7052A_AT.pdf >> >> 1 W BTL mono audio amplifier with DC volume control TDA7052A/AT >> > I had the same problem.... switched to the SOIC8 version . You can just > about solder across the dil pads as an interim solution. I guess I'll be > looking for a solution too. Maybe I'll have to bulk buy. :( > > --- > This email has been checked for viruses by Avast antivirus software. > https://www.avast.com/antivirus >http://media.digikey.com/pdf/Data%20Sheets/Panasonic%20Semiconductors%20ICs%20PDFs/AN7511.pdf
Looking for a replacement for NXP/Philips TDA7052A/AT NXP 1W audio amp going obsolete...
Started by ●October 27, 2016
Reply by ●October 29, 20162016-10-29
Reply by ●October 30, 20162016-10-30
On Sun, 30 Oct 2016 10:23:15 +1000, "David Eather" <eather@tpg.com.au> wrote:>On Fri, 28 Oct 2016 09:00:01 +1000, TTman <pcw1.cad@ntlworld.com> wrote: > >> On 27/10/2016 22:22, boB wrote: >>> >>> >>> >>> This part, an 8 pin bridgable 1W audio amplifier with volume control >>> input is going obsolete and last order date is end of this year. >>> >>> When I designed it in around 10 years ago they were old then but >>> plenty available. We will eventually need to design in a replacement. >>> >>> We are running these at around 9V VCC and they work great into a small >>> speaker. 8 Ohms I believe. >>> >>> We also use the volume control input... +40 dB gain down to -60 or 80 >>> dB gain. Doesn't require that much gain necessarily. >>> >>> There is the old National/TI LM386-4 that I just now heard is going >>> obsolete ! Dang. It looked like it was going to work. >>> >>> Could go discreet with op-amp and SOT-23s but still wouldn't have the >>> volume/gain control pin without adding a Jfet or something and would >>> take up valuable space on one of the existing products. >>> >>> Any suggestions ? >>> >>> Thanks, >>> boB >>> K7IQ >>> >>> >>> http://www.nxp.com/documents/data_sheet/TDA7052A_AT.pdf >>> >>> 1 W BTL mono audio amplifier with DC volume control TDA7052A/AT >>> >> I had the same problem.... switched to the SOIC8 version . You can just >> about solder across the dil pads as an interim solution. I guess I'll be >> looking for a solution too. Maybe I'll have to bulk buy. :( >> >> --- >> This email has been checked for viruses by Avast antivirus software. >> https://www.avast.com/antivirus >> > >http://media.digikey.com/pdf/Data%20Sheets/Panasonic%20Semiconductors%20ICs%20PDFs/AN7511.pdfPerfect ! Thanks ! But it looks like this one AN7511 is obsolete too. Darn. It would have been perfect ! I could also use a small class-D amplifier of small power rating. I found a 10 watt one I think it was (5V Vcc max I think) but it also requires an output LC which would be fine but it takes more space. And it didn't have a Volume/gain adjustment input. I'm open if it does't take up too much space and hopefully runs on 9-ish volts. boB
Reply by ●October 30, 20162016-10-30
On Sun, 30 Oct 2016 17:50:31 +1000, boB <boB@theresnoplacelikehome.com> wrote:> On Sun, 30 Oct 2016 10:23:15 +1000, "David Eather" <eather@tpg.com.au> > wrote: > >> On Fri, 28 Oct 2016 09:00:01 +1000, TTman <pcw1.cad@ntlworld.com> wrote: >> >>> On 27/10/2016 22:22, boB wrote: >>>> >>>> >>>> >>>> This part, an 8 pin bridgable 1W audio amplifier with volume control >>>> input is going obsolete and last order date is end of this year. >>>> >>>> When I designed it in around 10 years ago they were old then but >>>> plenty available. We will eventually need to design in a replacement. >>>> >>>> We are running these at around 9V VCC and they work great into a small >>>> speaker. 8 Ohms I believe. >>>> >>>> We also use the volume control input... +40 dB gain down to -60 or 80 >>>> dB gain. Doesn't require that much gain necessarily. >>>> >>>> There is the old National/TI LM386-4 that I just now heard is going >>>> obsolete ! Dang. It looked like it was going to work. >>>> >>>> Could go discreet with op-amp and SOT-23s but still wouldn't have the >>>> volume/gain control pin without adding a Jfet or something and would >>>> take up valuable space on one of the existing products. >>>> >>>> Any suggestions ? >>>> >>>> Thanks, >>>> boB >>>> K7IQ >>>> >>>> >>>> http://www.nxp.com/documents/data_sheet/TDA7052A_AT.pdf >>>> >>>> 1 W BTL mono audio amplifier with DC volume control TDA7052A/AT >>>> >>> I had the same problem.... switched to the SOIC8 version . You can just >>> about solder across the dil pads as an interim solution. I guess I'll >>> be >>> looking for a solution too. Maybe I'll have to bulk buy. :( >>> >>> --- >>> This email has been checked for viruses by Avast antivirus software. >>> https://www.avast.com/antivirus >>> >> >> http://media.digikey.com/pdf/Data%20Sheets/Panasonic%20Semiconductors%20ICs%20PDFs/AN7511.pdf > > Perfect ! Thanks ! But it looks like this one AN7511 is obsolete > too. Darn. It would have been perfect !Dooh!> > I could also use a small class-D amplifier of small power rating. > > I found a 10 watt one I think it was (5V Vcc max I think) but it also > requires an output LC which would be fine but it takes more space. > And it didn't have a Volume/gain adjustment input. > > I'm open if it does't take up too much space and hopefully runs on > 9-ish volts. > > boBI feel dirty just for saying this... LM380?
Reply by ●October 31, 20162016-10-31
On Sunday, 30 October 2016 23:55:44 UTC, David Eather wrote:> >>> On 27/10/2016 22:22, boB wrote:> >>>> This part, an 8 pin bridgable 1W audio amplifier with volume control > >>>> input is going obsolete and last order date is end of this year. > >>>> > >>>> When I designed it in around 10 years ago they were old then but > >>>> plenty available. We will eventually need to design in a replacement.> I feel dirty just for saying this... LM380?from the days of QIL IIRC. When 0.1" spacing was too tight. NT
Reply by ●October 31, 20162016-10-31
On Mon, 31 Oct 2016 21:36:23 +1000, <tabbypurr@gmail.com> wrote:> On Sunday, 30 October 2016 23:55:44 UTC, David Eather wrote: >> >>> On 27/10/2016 22:22, boB wrote: > >> >>>> This part, an 8 pin bridgable 1W audio amplifier with volume >> control >> >>>> input is going obsolete and last order date is end of this year. >> >>>> >> >>>> When I designed it in around 10 years ago they were old then but >> >>>> plenty available. We will eventually need to design in a >> replacement. > >> I feel dirty just for saying this... LM380? > > from the days of QIL IIRC. When 0.1" spacing was too tight. > > > NTa 14 or 16 pin PDIP
