This text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here in

white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader. white to force landscape pages to be ...

FCE181

1/2

90

°

0

°

×

×

Σ

27

×

TDA8050

MODULATOR

CONVERTER

25

24

28

1

3

2

30

31

RF_OUT

OUTEN

BUF_OUT

BUF_OUTC

26

AVCC1

4

AGND2

18

DVCC

13

DGND

9

AGND1

32

SW_CAP

29

AVCC2

8

7

6

5

CLK

I_IN

I_INC

Q_IN

Q_INC

15

14

DATA

16

EN

RF_OUTC

RF_IN

IF_FILT

RF_INC

IF_FILTC

FIXED

MAIN DIVIDER

DAC

3-WIRE BUS TRANCEIVER

DIGITAL

PHASE

COMPARATOR

DIGITAL

PHASE

COMPARATOR

CHARGE

PUMP

PROGRAM-

MABLE

CHARGE

PUMP

PROGRAMMABLE

REF DIVIDER

PROGRAMMABLE

MAIN DIVIDER

PROGRAMMABLE

REF DIVIDER

10

12

11

17

22

21

20

19

CP_MOD

TKAMOD

TKBMOD

TKACONV

OSC_IN

TKBCONV

TUNECONV

CP_CONV

23

LOCK

Fig.1 Block diagram.