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.

PLL loop filter design?

Status
Not open for further replies.

Danis

Newbie level 3
Joined
Jun 17, 2006
Messages
3
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,311
I am looking for the loop filter design calculations for a synthesized RX at **broken link removed**
The receiver uses the MC145170-2 and the filter used is type2 3rd order which is not included in the datasheet of MC145170 for design. The filter constitutes R16, C18, C19, R17 and C15. An additional R15 resistor of 3.3k is also included from the PDout (pin 13) of MC145170, the purpose of which I am unable to understand.

Any help will be appreciated!
 

Danis

Newbie level 3
Joined
Jun 17, 2006
Messages
3
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,311
Nobody know???

Is this the right place to post this message?
 

zyyang

Member level 3
Joined
Jan 19, 2006
Messages
54
Helped
3
Reputation
6
Reaction score
1
Trophy points
1,288
Location
P.R. CHINA
Activity points
1,560
i think you 'd better draw the circuit, ok?
and you can calculate the transfer function from the current of cp to the control voltage vctrl . good luck!
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top