Substrate temperature stabilized

[Rick Jansen]

Joachim Verghese wrote:

> Then there's also the MPQ2222 (Motorola/SGS-Thompson) which is
> four 2N2222s in a DIP14

Aha! Suddenly there seems to be a hoard of suitable devices :)

> BTW, what's the difference between the 3046 and the 3086?

No difference from the data sheets. The 3046 has a 3045 sister,
the difference being the temperature range and a ceramic package.
Data sheets for arrays are online at Harris via WWW:

  http://rel.semi.harris.com/docs/datasheets

CA3018 General Purpose Transistor Arrays 
CA3039 Diode Array 
CA3045, CA3046 General Purpose N-P-N Arrays 
CA3081, CA3082 General Purpose High Current N-P-N Arrays 
CA3083 General Purpose High Current N-P-N Array 
CA3086 General Purpose N-P-N Transistor Array 
CA3096 N-P-N/P-N-P Transistor Array 
CA3127 High Frequency N-P-N Transistor Array 
CA3141 High Voltage Diode Array  
CA3146, CA3183 High-Voltage Transistor Arrays 
CA3227, CA3246 High-Frequency N-P-N Transistor Arrays Up to 1.5GHz 
HFA3046, HFA3096, HFA3127, HFA3128  Ultra High Frequency 

The 3246 could be a better 3046, it has a bit higher hfe, but the
data sheet doesn't say anything about log conformity. It's not 
available here in NL though, according to my dealer.

Harris also has a data sheet on temperature stabilized amplifiers:
AN5296 Application of the CA3018 Integrated Circuit Transistor Array 
(5 pages). I requested these through the AnswerFax page Harris provides.
(Hope that works transcontinentally.)

Rick Jansen
__
rick at sara.nl   http://www.sara.nl/Rick.Jansen
_____________________________________________
S&H's a module and s&h's looking good