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Date: Wed, 27 Apr 2016 09:09:34 +0100
Message-ID: <CAA8k23T2aqfXOQi4a4o--HNnL33Sc9pg84SrhujNu9qAzCjj=g@mail.gmail.com>
From: Andy Talbot <andy.g4jnt@gmail.com>
To: rsgb_lf_group@blacksheep.org
Subject: Re: LF: TXing on VLF again, my first homemade linear PA! :-)
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Its only TSSOP packaging, 0.64mm pad spacing.  I get sufficient resolution
for this type of IC package home brewing using acetate / UV  or
press-n-peel iron on resist.

Although, having said that, PCB manufacture of small numbers is getting
quite cheap now.   Anyone who breadboards a successful design, lays out a
PCB and puts a bit of money up front to get a few made would be guaranteed
to get it back by passing the remaining PCBs onto others at a "sufficiently
increased" cost to cover expenses.

I did that several times with PCBs for various synthesizer chips, and apart
from the tedium involved with placing things in padded envelopes and
addressing them, it's a good route to having PCBs made for your own stuff.

Of course, more tedium arrives when others need help getting your project
going, but that's another story :-)

Andy  G4JNT

On 27 April 2016 at 08:42, Lawrence Galea <9h9mhrlaw@gmail.com> wrote:

> Anyone willing to do a run of pcb's for an amplifier using these ICs?
> Regards
> Lawrence
>
> On 4/26/16, Johan Bodin <jhbodin@tele2.se> wrote:
> > Hi Stefan,
> >
> > Expensive? No! $6 in big quantities and they offer samples for free.
> > Check ti.com.
> >
> > /Johan
> >
> > DK7FC wrote:
> >> I would assume such a chip is quite expensive and not easy to get in
> >> small amounts(?)
> >
> >
>
>

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<div dir=3D"ltr"><div>Its only TSSOP packaging, 0.64mm pad spacing.=C2=A0 I=
 get sufficient resolution for this type of IC package=C2=A0home brewing us=
ing acetate / UV=C2=A0 or=C2=A0=C2=A0 press-n-peel iron on resist.</div><di=
v><br></div><div>Although, having said that, PCB manufacture of small numbe=
rs is getting quite cheap now.=C2=A0=C2=A0 Anyone=C2=A0who=C2=A0breadboards=
 a successful design, lays out a PCB and puts a bit of money up front to ge=
t a few made would be guaranteed to get it back by passing the remaining PC=
Bs onto others at a &quot;sufficiently increased&quot; cost to cover expens=
es.</div><div><br></div><div>I did=C2=A0that several times with PCBs for va=
rious synthesizer chips, and apart from the tedium involved with placing th=
ings in padded envelopes and addressing them, it&#39;s a good route to havi=
ng PCBs made for your own stuff.</div><div><br></div><div>Of course, more t=
edium=C2=A0arrives when others need help getting your project going, but th=
at&#39;s another story :-)</div><div><br></div><div>Andy=C2=A0 G4JNT</div><=
/div><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On 27 April =
2016 at 08:42, Lawrence Galea <span dir=3D"ltr">&lt;<a href=3D"mailto:9h9mh=
rlaw@gmail.com" target=3D"_blank">9h9mhrlaw@gmail.com</a>&gt;</span> wrote:=
<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-lef=
t:1px #ccc solid;padding-left:1ex">Anyone willing to do a run of pcb&#39;s =
for an amplifier using these ICs?<br>
Regards<br>
Lawrence<br>
<br>
On 4/26/16, Johan Bodin &lt;<a href=3D"mailto:jhbodin@tele2.se">jhbodin@tel=
e2.se</a>&gt; wrote:<br>
&gt; Hi Stefan,<br>
&gt;<br>
&gt; Expensive? No! $6 in big quantities and they offer samples for free.<b=
r>
&gt; Check <a href=3D"http://ti.com" target=3D"_blank" rel=3D"noreferrer">t=
i.com</a>.<br>
&gt;<br>
&gt; /Johan<br>
&gt;<br>
&gt; DK7FC wrote:<br>
&gt;&gt; I would assume such a chip is quite expensive and not easy to get =
in<br>
&gt;&gt; small amounts(?)<br>
&gt;<br>
&gt;<br>
<br>
</blockquote></div><br></div>

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