Matched Transistors (quad PNP arays)

rtarbell · 17th September 2005, 08:09 AM

Does anyone know where to get matched IC arrays of transistors, particularly quad PNPs? I've tried looking -> very hard to find

peranders · 17th September 2005, 09:45 AM

I haven't heard of any.

Why can't you use NPN quads or two dual PNP like SSM2220 from Analog Devices?

moamps · 17th September 2005, 09:52 AM

THAT 120

www.thatcorp.com/datashts/120data.pdf

StevenOH · 17th September 2005, 07:01 PM

http://www.mouser.com/fairchildsemi/
small signal bipolar, dual and quad: page 348

jackinnj · 17th September 2005, 08:58 PM

MPQ2907

sam9 · 17th September 2005, 09:44 PM

V. interesting. These appear to be fubctionally equivalent to 2n3904/3906. The THAT corp products have a matching parameter, but Fairchild does not. Any idea if Fairchild makes an effort to match beyond (presumably) cutting them from a single wafer? I assume all four are on a single contiguous piece of silicon rather than four individual chips in one package.

17th September 2005, 08:09 AM	#1
rtarbell diyAudio Member Join Date: Sep 2005	Matched Transistors (quad PNP arays) Does anyone know where to get matched IC arrays of transistors, particularly quad PNPs? I've tried looking -> very hard to find

17th September 2005, 09:45 AM	#2
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	I haven't heard of any. Why can't you use NPN quads or two dual PNP like SSM2220 from Analog Devices? __________________ /Per-Anders (my first name) or P-A as my friends call me

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17th September 2005, 09:52 AM	#3
moamps diyAudio Member Join Date: Oct 2002 Location: Croatia	THAT 120 www.thatcorp.com/datashts/120data.pdf

17th September 2005, 07:01 PM	#4
StevenOH diyAudio Member Join Date: Jun 2004 Location: USA	http://www.mouser.com/fairchildsemi/ small signal bipolar, dual and quad: page 348

17th September 2005, 08:58 PM	#5
jackinnj diyAudio Member Join Date: Apr 2002 Location: Llanddewi Brefi, NJ	MPQ2907

17th September 2005, 09:44 PM	#6
sam9 diyAudio Member Join Date: Jun 2002 Location: Left Coast	V. interesting. These appear to be fubctionally equivalent to 2n3904/3906. The THAT corp products have a matching parameter, but Fairchild does not. Any idea if Fairchild makes an effort to match beyond (presumably) cutting them from a single wafer? I assume all four are on a single contiguous piece of silicon rather than four individual chips in one package.

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