SA9024 datasheet(2/23 Pages) PHILIPS

No de pièce	SA9024

Description	900 MHz transmit modulator and 1.3 GHz fractional-N synthesizer

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Fabricant	PHILIPS [NXP Semiconductors]

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Philips Semiconductors

Objective specification

SA9024

900 MHz transmit modulator and 1.3 GHz

fractional–N synthesizer

2

1997 Aug 01

DESCRIPTION

This specification defines the requirements for a transmitter

modulator and fractional–N synthesizer IC to be used in cellular

telephones which employ the North American Dual Mode Cellular

System (IS–136).

FEATURES

• Low current from 3.75V supply

• Low phase noise

• Main loop with internal charge pump and fractional compensation

• 3–line serial interface bus

• Power down for the synthesizers

• Speedup mode for faster switching

APPLICATIONS

• Cellular phones

• Portable battery–powered radio equipment.

GENERAL DESCRIPTION

The SA9024 BICMOS device integrates:

• Main channel synthesizer

• Auxiliary synthesizer

• Transmit offset synthesizer and oscillator

• I/Q modulator

• Power control

• Reference and clock buffers

• Control logic for programming and power down modes

PIN CONFIGURATION

SR01536

45

46

47

48

1

2

3

4

5

6

7

13 14

15 16 17 18 19

25

26

27

28

29

30

42

43

44

31

32

33

34

35

36

20

21 22 23 24

8

9

10

11

12

39

40

41

37

38

PHP

V

RX

GND

Ipeak

TANK1

XTAL

TX

DATA

CLOCK

LOCK

STROBE

GND

I

Q

CC

V CC

SA9024

LO1

RXLO2

TXLO1

TXLO2

PHS out

EN

2

Q

I

Figure 1.

Pin Configuration

QUICK REFERENCE DATA

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

VCC

Supply voltage

VCC

3.6

3.75

3.9

V

ICC

Supply current

–

TBD

–

mA

ICC_save

Total supply current in power–down

mode

–

TBD

–

mA

fVCO

Input frequency

800

–

1300

MHz

fAUX

Input frequency

10

–

500

MHz

fXTAL

Crystal reference input frequency

10

–

40

MHz

fPC

Maximum phase comparator frequency

Main and Aux loops

–

5

MHz

Tamb

Operating ambient temperature

–40

–

+85

°C

ORDERING INFORMATION

TYPE NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

SA9024

LQFP48

Plastic low profile quad flat package; 48 leads; body 7x7x1.4 mm

SOT313-2

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Fabricant	No de pièce	Fiches technique	Description
NXP Semiconductors	SA9025	134Kb / 23P	900 MHz transmit modulator and 2.2 GHz fractional-N synthesizer 1997 Aug 01

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Texas Instruments	TRF8010	185Kb / 10P	[Old version datasheet] 900-MHz RF TRANSMIT DRIVER
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