Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Resistor Layout - Unit Cell Selection

Status
Not open for further replies.
P

Puppet123

Full Member level 6
Joined
Apr 26, 2017
Messages
356
Helped
22
Reputation
44
Reaction score
21
Trophy points
18
Activity points
3,059
Hello,

I am doing resistor layout in analog/RF and want to know whether there is a rule of thumb for the selection of the unit cell in a resistor interdigitated or common centroid layout.

Any guidance on this from books or other references ?

Thank you.
 

RF would impose different concerns than precision analog.
RF losses and couplings would argue against co-packing
resistor segments while gradients argue for it in analog
matching; likewise making a resistor fat for matching will
make its shunt capacitances go up, bad for high end RF.

You have to start with the "care-abouts".
 

dick_freebird,

Thank you for your response.

So for precision analog, what are the considerations, and how does one pick the unit size - what are the rules of thumb ?

And what are the "care-abouts" ?

Thanks.

- - - Updated - - -

dick_freebird,

Thank you for your response.

So for precision analog, what are the considerations, and how does one pick the unit size - what are the rules of thumb ?

And what are the "care-abouts" ?

Thanks.
 

A rule of thumb would be to choose the unit size that will give you the least number of resistor segments in the area you have to work with.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top