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

How to design 3rd order RC filter

Status
Not open for further replies.
X

xiexi

Member level 4
Member level 4
Joined
Jan 14, 2005
Messages
79
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,286
Visit site
Activity points
613
I want 4kHz LPF, I design R=780K, C=10pF, and 3 same RC in series, the -3dB is about 4KHz, is the design right?
if right but the size is too big to integrate in IC, can anyone give me some instruction to design a low cost LPF, thanks!
 

You can use active RC filter.
For example, see FilterLab Filter Design Software
**broken link removed**
for help.
 
  • Like
Reactions: jluhzw

    jluhzw

    jluhzw

    Points: 2
    Helpful Answer Positive Rating
Generally you can calculate the transfer function in mathcad or in matlab, then decide you filter's type(butterworth or some else), in matlab, these filter's transfer function have been given, so convenient to define the value of elements!
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top