[sdiy] SIP filter modules coming

Tim Ressel timr at circuitabbey.com
Tue Apr 24 19:52:41 CEST 2018


When will Alfa do a 566?


On 4/24/2018 10:29 AM, Tom Wiltshire wrote:
> Alfa have got the AS194H/AS394H (LM194H/LM394H) matched pairs in production, and AS3046 (LM3046) is on the way. I don’t know if they have plans for the 3096 - if so, they haven’t mentioned it to me yet.
>
> Tom
>
>> On 24 Apr 2018, at 16:50, Dan Snazelle <subjectivity at hotmail.com> wrote:
>>
>> I agree with ian !!
>>
>> I'd love to see new versions of the transistors arrays !
>>
>>
>> Sent from my iPhone
>>
>>> On Apr 24, 2018, at 11:37 AM, Ian Fritz <ijfritz at comcast.net> wrote:
>>>
>>> Of course, but weren’t we talking about the new ones?  Surely the improved growth and fab will also apply to them.
>>>
>>> Ian
>>>
>>>>> On Apr 24, 2018, at 12:52 AM, Gordonjcp <gordonjcp at gjcp.net> wrote:
>>>>>
>>>>> On Mon, Apr 23, 2018 at 04:21:57PM -0600, Ian Fritz wrote:
>>>>>
>>>>>
>>>>>>> On Apr 23, 2018, at 2:20 PM, Gordonjcp <gordonjcp at gjcp.net> wrote:
>>>>>>>
>>>>>>> On Mon, Apr 23, 2018 at 12:18:55PM -0700, Jay Schwichtenberg wrote:
>>>>>>> Don't know if you're talking about the CA3280/2164s or CA3046/CA3096s.
>>>>>> The CA3046/3096es.  They're not especially well matched, compared to
>>>>>> what you can get these days.
>>>>> How do you know? Have you tested any?
>>>> Yes, I have, albeit old ones.  I don't know how new the "newest" ones
>>>> are, probably not a whole lot newer.
>>>>
>>>> Vbe and hFE are all over the place.  They are closely thermally coupled,
>>>> which is a help I guess.  Other than than, any two random BC548s out of
>>>> the bag will probably be closer matched these days.
>>>>
>>>> -- 
>>>> Gordonjcp
>>>>
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-- 
--Tim Ressel
Circuit Abbey
timr at circuitabbey.com




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