MAT04 for ASM-1's

[Magnus Danielson]

From: Scott Bernardi <sbernardi at home.net>
Subject: Re: MAT04 for ASM-1's
Date: Sun, 19 Nov 2000 10:14:14 -0800

> You shouldn't need series resistors in monolithic (i.e., same chip)  matched
> transistors. In fact, you can use a trick from analog circuit design and connect
> the four transistors connected in a "cross coupled quad". This minimizes the effect
> of temperature or manufacturing gradients between the transistors.  Given the
> transistors A,B,C,D laid out as below (I looked at the MAT-04 die from the
> datasheet, this is how they are situated), you connect A and D in parallel, and C
> and B. Note that all of PMI's precision Opamps like the OP-07, OP-27, etc. use this
> technique.
> 
> A  B
> C  D

That would be a good usage. Note that by looking at the MAT-02 die you
will discover that this is how the MAT-02 really is built up.

Please keep in mind that you should pay attention to keep the
interconnections as short and as low-resistive as possible.

Not looking at die:s are a sin! (c:

Cheers,
Magnus