STB4395 Ver la hoja de datos (PDF) - STMicroelectronics

Número de pieza

componentes Descripción

Fabricante

STB4395

CT2 RECEIVER/TRANSMITTER

STMicroelectronics 

2 - BLOCK DIAGRAM

Figure 1

RF S AW

8 6 6 .0 5 MHz

LC

IF S AW

STB4395

61 60

56 55

1 5 0. 4 MHz

51 50

NTXEN

4

NP RGEN

1

S yn the s ize r

Contro l

P RGCLK

2

P RGD

3

I

IQ Inp ut

Da ta

Q

P A/LNA

CONTROL

1

1

1 CONTROL

1

DECODER

15

IQ Modu lator

÷2

LNA 1s t

Mixe r

PA

Tx

Mixe r

Tx

DIVIDER

Rx

DIVIDER

2nd Mixe r

S AWO

47

NSAWO

46

NIF2O

44

IF2O

43

IF2I

41

NIF2I

40

1 .7 MHz

LC

S YNCLK

1 4 .4 MHz

12

VCO

TANK

VCOO

14

NVCOO

15

P LL

F ILTER

F LTRO

16

Tra ns mit

VCO

3 0 0 .8 MHz

P HASE

DETE CTOR

CHARGE

P UMP

Cha nne l

VCO

71 6.45 MHz

STB439 5

24 25

21

P HASE

P HASE

DETE CTOR DETECTOR

CHARGE

P UMP

CHARGE

P UMP

DATA

S LICER

FM

Mod u la to r

37 RS S I

VCOI

35

NVCOI

34

VCO

TANK

F LTRI

33

Re ce ive

VCO

1 5 2. 1 MHz

P LL

FILTER

18 19 20 27 28 31

29 30

VCO

TANK

P LL

F ILTER

Da ta

Out

5 0 kHz

Bit Ra te Filter

DEMOD.

TANK

7/16

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