TDA6650TT Datasheet, PDF(6/54 Page) NXP Semiconductors – 5 V mixer/oscillator and low noise PLL synthesizer for hybrid terrestrial tuner (digital and analog)

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TDA6650TT Datasheet, PDF (6/54 Pages) NXP Semiconductors – 5 V mixer/oscillator and low noise PLL synthesizer for hybrid terrestrial tuner (digital and analog)

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NXP Semiconductors

TDA6650TT; TDA6651TT

5 V mixer/oscillator and low noise PLL synthesizer

Table 4. Pin descriptionâ¦continued

Symbol

TDA6650TT TDA6651TT

MOSCIN1 34

MOSCIN2 35

OSCGND 36

LOSCOUT 37

LOSCIN

Description

mid band oscillator input 1

mid band oscillator input 2

oscillators ground

low band oscillator output

low band oscillator input

6.2 Pinning

HBIN1 1

HBIN2 2

MBIN 3

LBIN 4

RFGND 5

IFFIL1 6

IFFIL2 7

BS4 8

AGC 9

BS3 10

BS2 11

BS1 12

BVS 13

ADC/BS5 14

SCL 15

SDA 16

AS 17

XTOUT 18

XTAL1 19

TDA6650TT

38 LOSCIN

37 LOSCOUT

36 OSCGND

35 MOSCIN2

34 MOSCIN1

33 HOSCIN2

32 HOSCOUT2

31 HOSCOUT1

30 HOSCIN1

29 IFGND

28 IFOUTA

27 IFOUTB

26 VCCA

25 PLLGND

24 VCCD

23 CP

22 VT

21 n.c.

20 XTAL2

001aac025

Fig 2. Pin conï¬guration TDA6650TT

7. Functional description

LOSCIN 1

LOSCOUT 2

OSCGND 3

MOSCIN2 4

MOSCIN1 5

HOSCIN2 6

HOSCOUT2 7

HOSCOUT1 8

HOSCIN1 9

IFGND 10

IFOUTA 11

IFOUTB 12

VCCA 13

PLLGND 14

VCCD 15

CP 16

VT 17

n.c. 18

XTAL2 19

TDA6651TT

38 HBIN1

37 HBIN2

36 MBIN

35 LBIN

34 RFGND

33 IFFIL1

32 IFFIL2

31 BS4

30 AGC

29 BS3

28 BS2

27 BS1

26 BVS

25 ADC/BS5

24 SCL

23 SDA

22 AS

21 XTOUT

20 XTAL1

001aac026

Fig 3. Pin conï¬guration TDA6651TT

7.1 Mixer, Oscillator and PLL (MOPLL) functions

Bit BS1 enables the BS1 port, the low band mixer and the low band oscillator. Bit BS2

enables the BS2 port, the mid band mixer and the mid band oscillator. When both BS1

and BS2 bits are logic 0, the high band mixer and the high band oscillator are enabled.

The oscillator signal is applied to the fractional-N programmable divider. The divided

signal fdiv is fed to the phase comparator where it is compared in both phase and

frequency with the comparison frequency fcomp. This frequency is derived from the signal

present on the crystal oscillator fxtal and divided in the reference divider. There is a

fractional calculator on the chip that generates the data for the fractional divider as well as

TDA6650TT_6651TT_5

Product data sheet

Rev. 05 â 10 January 2007

6 of 54

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