SA8025A datasheet(11/23 Pages) PHILIPS

Part #	SA8025A

Description	Low-voltage 1.8GHz fractional-N synthesizer

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Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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Philips Semiconductors

Product specification

SA8025A

1.8GHz low-voltage Fractional-N synthesizer

1996 Oct 15

11

MSB

LSB

WORD

A1

A0

B

C

D

E

ADDRESS BITS

TEST BITS

D31

D0

0

NF

NM1

NM2

NM3

NM2

CN

D0

0

NF

NM1

NM2

NM3

NM2

D23

PR = “01”

PR

≠ “01”

1

0

0 0

CN

CK

CL

PR

1

0

NA

1

P

A

1

0

1

NR

0

SM

E

M

SA

E

A

F

M

O

D

L

O

N

G

1

1 1

D23

D0

NM4

0

0 0

T

1

T

0

LAST IN

FIRST IN

SR00628

Figure 6. Serial Input Word Format

SA = “11”

SA = “10”

SA = “01”

SA = “00”

SM = “11”

SM = “10”

SM = “01”

SM = “00”

MAIN SELECT

AUXILIARY SELECT

REFERENCE

INPUT

DIVIDE BY NR

÷2

MAIN

DETECTOR

PHASE

AUXILIARY

DETECTOR

PHASE

÷2

SR00629

Figure 7. Reference Divider

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SA8025A Datasheet(PDF) 11 Page - NXP Semiconductors

SA8025A Datasheet(HTML) 11 Page - NXP Semiconductors

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