MC145220DT View Datasheet(PDF) - Motorola => Freescale

Part Name

Description

MFG CO.

MC145220DT

Dual 1.1 GHz PLL Frequency Synthsizer

Motorola => Freescale 

BLOCK DIAGRAM

fin 8

fin 7

2

REFout

1

REFin

BUFFER

AND

CONTROL

3

32/33 OR

64/65

PRESCALER

RATIO

(INTERNAL) 2

23

A AND N COUNTERS

TO MUX FOR

OUTPUT A

18

2

BitGrabber Plus

A REGISTER

23 BITS

fV

PHASE/

FREQUENCY

DETECTOR

fR

PAIR

STBY

(INTERNAL)

3 LD

4

PDout/φR

5

Rx/φV

13–STAGE

R COUNTER

13

7

DOUBLE BUFFER

BitGrabber Plus

Rs

16

R REGISTER

16 BITS

Rs′

13

2

BitGrabber Plus

C REGISTER

7 BITS

UNUSED

2

UNUSED

2

BitGrabber Plus

C′ REGISTER

7 BITS

STBY′

(INTERNAL)

fin′ 13

fin′ 14

13–STAGE

R′ COUNTER

32/33 OR

64/65

PRESCALER

A′ & N′ COUNTERS

fR′

18

LD′

PHASE/

FREQUENCY 17

DETECTOR

PDout ′/φR′

fV′

PAIR

16 Rx ′/φV′

RATIO

23

2

(INTERNAL)

18

BitGrabber Plus

A′ REGISTER

23 BITS

PORT

fV′

fR′

23

2

UNUSED

fR

MUX

10

fV

ENB 11

Din 20

CLK 19

24 1/2 STAGE

SHIFT REGISTER

DATA OUT

ADDRESS 5

2

LOGIC AND

STORAGE

PLL / PLL′

PIN 9 = V+ (Positive Power to the main PLL, Reference Circuit, and a portion of the Serial Port)

PIN 6 = GND (Ground to the main PLL, Reference Circuit, and a portion of the Serial Port)

PIN 12 = V+′ (Positive Power to PLL′ and a portion of the Serial Port)

PIN 15 = GND′ (Ground to PLL′ and a portion of the Serial Port)

2

SELECT FROM

A REGISTER

(INTERNAL)

OUTPUT A

MC145220

2

MOTOROLA

Share Link: