Hello everyone,
I want to simulate some tantalum film resistors in ADS.I will take the Libra thin film resistor model
from ADS Library. I know the thickness and resistivity of Tantalum,so I can easily find the sheet resistance.I will put the 50 ohm value of sheet resistance there. Than I will change the length and width of TFR modelto get my desire resistance value.My question is am I right to do so? Thanks in advance.
I will put the 50 ohm value of sheet resistance there. Than I will change the length and width of TFR modelto get my desire resistance value.My question is am I right to do so?
As far as my knowledge, sheet resistance depend on resistivity and thickness of the material.than you can use length and width to get the desired actual value. Am I right? My second question is that when we are using film resistor in ADS, How can we set the resistor material?
Correct. Material is Tantalum in your case and thickness is usually given (fixed) by the manufacturing process. This means that sheet resistance will be different from 50 Ohm in many cases. No problem, you just need to set the actual sheet resistance value in your model.