Hi,

Where do you need to use these linear resistors and how linear do you need them to be?

I can think of the following few examples, although they are all a little different from each other in terms of context:

1. Large Ron (upto 100 MOhm) using CMOS: Vittoz et. al., JSSC, June '88 (High Performance, Crystal Osc..., Section IV)

2. Linear current division: Bult, Geelen, JSSC, Dec. '92(An Inherently Linear & Compact Current Division Technique)

3. Linear Gm: Gilbert, JSSC, Jan. '98, (The multi-tanh principle....); this is with BJTs but you can use MOS biased in weak inversion.

Hope this helps.

Regards
Vivek

Could you post something on what you are trying to do with such a huge resistance?

As a general rule I never try to use anything larger than 200K-300K on a PCB, and probably not larger than 10-20K in a chip.

What are you trying to do?

thanks,
Jerry