LMX2531 datasheet(2/41 Pages) TI

Part #	LMX2531

Description	LMX2531 High Performance Frequency Synthesizer System with Integrated VCO

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Manufacturer	TI [Texas Instruments]

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VCCDIG

VregBUF

GND

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

10

11

12

13

14

15

16

17

18

1

2

3

4

5

6

7

8

9

NC

GND

DATA

CLK

Fout

GND

VCCBUF

Vtune

CPout

FLout

VregPLL1

VCCPLL

NC

VCO

VREG

Charge

Pump

Fast

Lock

I

R

Divider

Serial Interface

Control

DATA

CLK

LE

CE

PLL

VREG1

VregVCO

VrefVCO

OSCin

OSCin*

Fout

Vtune

CPout

FLout

Ftest/ LD

DIG

VREG

PLL

VREG2

Prescaler

N

Divider

Comp

MUX

1/2

LMX2531

SNAS252R – OCTOBER 2005 – REVISED FEBRUARY 2013

www.ti.com

FUNCTIONAL BLOCK DIAGRAM

Connection Diagrams

Figure 1. 36-Pin WQFN Package, D Version

(LMX2531LQ1146E/1226E/1312E/1415E/1515E/2820E/3010E)

2

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