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

LM331 component selector guide

Status
Not open for further replies.
G

garimella

Full Member level 5
Full Member level 5
Joined
Aug 25, 2011
Messages
268
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,296
Visit site
Activity points
3,361
Referring to Fig 15 of LM231 datasheet of TI. I tried to build the circuit as it is, but with Vs=5V instead of 15V. The frequency output vanishes as soon as VIN is >3V. Why? Now how to correct the circuit. I am looking for VIN -> 0 to 10V and Fout-> 0 to 10kHz
 

Datasheet has the answer: Input common mode range is -0.2 to Vcc-2 V.

You'll use a suitable voltage divider to reduce 0..10V to e.g. 0..2.5V
 

Thanks FvM. One more question. Is there any calculator for deciding the value of RL and CL. Why it is particularly 100K? and derivation of formula for FOUT.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top