IC Layout Basics: A Practical Guide
By Judy Saint

Try It

1.

Use the equation in the text above to calculate the total resistance of each resistor. Use the given values for R b, R h and R c and width requirements.

Given:

? b

=

300 ?/ ?

? h

=

2 ?/ ?

R c

=

70 ?-microns

W b

=

W h

W c

=

W b ? 2 microns

  1. L b = 20 ?

    L h = 2 ?

    W b = 5 microns

  2. L b = 60 ?

    L h = 4 ?

    W b = 20 microns

  3. L b = 10 ?

    L h = 1 ?

    W b = 50 microns

Answers

1.

Substitute variables into the text equation:

Solve algebraically. Each term yields one portion of the total resistance body, head and contact.

Copyright Christopher Saint and Judy Saint 2002 under license agreement with Books24x7
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