SA8027W Ver la hoja de datos (PDF) - Philips Electronics

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SA8027W

2.5 GHz low voltage, low power RF fractional-N/IF integer frequency synthesizer

Philips Electronics 

Philips Semiconductors

2.5 GHz low voltage, low power

RF fractional-N/IF integer frequency synthesizer

Product data

SA8027

18

CLOCK

19

DATA

2–BIT SHIFT

REGISTER

20

STROBE

ADDRESS DECODER

22–BIT SHIFT

REGISTER

CONTROL

LATCH

VDD

24

VDDpre

1

VDDCP

14

PUMP

CURRENT

SETTING

PUMP

BIAS

15

RSET

LOAD SIGNALS

4

RF/MAINin+

5

RF/MAINin–

AMP

17

REFin+

REFin–

16

LATCH

MAIN DIVIDER

LATCH

REFERENCE

DIVIDER

SM

2 2 22

SA

FRAC

COMP

PHASE

DETECTOR

7

PHP

8

PHI

LOCK

SELECT

22 LOCK

11

IF/AUXin

LATCH

AUX DIVIDER

PHASE

DETECTOR

10

PHA

TEST

AMP

23

2

GND

3

GNDpre

6, 9

GNDCP

Figure 4. Block Diagram (HBCC24)

21

PON

SR02358

HBCC24 PIN DESCRIPTION

SYMBOL PIN

DESCRIPTION

VDDPre

GND

1 Prescaler supply voltage

2 Digital ground

GNDPre

RFin+

3 Prescaler ground

4 RF input to main divider

RFin–

5 RF input to main divider

GNDCP

PHP

6 Charge pump ground

7 Main normal charge pump

PHI

8 Main integral charge pump

GNDCP

PHA

9 Charge pump ground

10 Auxiliary charge pump output

AUXin

11 Input to auxiliary divider

N/C

12 Not connected

N/C

13 Not connected

SYMBOL

VDDCP

RSET

REFin–

REFin+

CLOCK

DATA

STROBE

PON

LOCK

TEST

VDD

PIN

DESCRIPTION

14 Charge pump supply voltage

15 External resistor from this pin to ground

sets the charge pump current

16 Reference input

17 Reference input

18 Programming bus clock input

19 Programming bus data input

20 Programming bus enable input

21 Power down control

22 Lock detect output

23 Test (should be either grounded or

connected to VDD)

24 Digital supply

2001 Aug 21

4

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