SA8025A データシートの表示（PDF） - Philips Electronics

部品番号

コンポーネント説明

メーカー

SA8025A

Low-voltage 1.8GHz fractional-N synthesizer

Philips Electronics 

Philips Semiconductors

1.8GHz low-voltage Fractional-N synthesizer

Product specification

SA8025A

BLOCK DIAGRAM

CLOCK

DATA

STROBE

VSS

RFIN

RFIN

TEST

VCCP

REFIN

AUXIN

SERIAL INPUT + PROGRAM LATCHES

EM

EM+EA

EA

FB

2

NM2

PR

NM1

NM3

2

12

8

64/65/68/73

PRESCALER

MAIN DIVIDERS

FMOD

NF

3

FRACTIONAL

ACCUMULATOR

FB

PRESCALER

MODULUS

CONTROL

EM

NR

12

SM

2

REFERENCE DIVIDER

SA

2

EA

PA

NA

12

MAIN

PHASE

DETECTOR

MAIN

REFERENCE

SELECT

FRD

CN

8

2

CL

2

÷2 ÷2 ÷2

CK

4

AUXILIARY

REFERENCE

SELECT

AUXILIARY

2

PHASE

DETECTOR

NORMAL

OUTPUT

CHARGE

PUMP

SPEED-UP

OUTPUT

CHARGE

PUMP

INTEGRAL

OUTPUT

CHARGE

PUMP

AUXILIARY

OUTPUT

CHARGE

PUMP

1/4

PRESCALER

AUXILIARY DIVIDER

VDD

RF

RN

PHP

PHI

RA

PHA

LOCK

VDDA

Figure 2. Block Diagram

VSSA

SR00624

1996 Oct 15

4

Share Link: