SAA7824 datasheet(6/89 Pages) PHILIPS

Part #	SAA7824

Description	CD audio decoder, digital servo and filterless DAC with integrated pre-amp and laser control (PhonIC)

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Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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6 / 89 page

2003 Oct 01

6

Philips Semiconductors

Product speciﬁcation

CD audio decoder, digital servo and ﬁlterless

DAC with integrated pre-amp and laser control

SAA7824

6

PINNING

SYMBOL

I/O

DESCRIPTION

LFPOWER

1

I

laser power supply

EXFILTER

2

O

10 nF capacitor for laser start-up control

MONITOR

3

I

laser monitor diode

SENSE

4

I

OPU ground reference point for MONITOR measurement

VSSA1

5

SUP

analog ground 1

IREF

6

O

reference current output (24 k

Ω resistor connected to analog ground)

VDDA1

7

SUP

analog supply voltage 1

VREFO

8

I/O

servo reference voltage

D1

9

I

diode voltage/current input (central diode signal input)

D2

10

I

diode voltage/current input (central diode signal input)

D3

11

I

diode voltage/current input (central diode signal input)

D4

12

I

diode voltage/current input (central diode signal input)

R1

13

I

diode voltage/current input (satellite diode signal input)

R2

14

I

diode voltage/current input (satellite diode signal input)

CSLICE

15

I/O

10 nF capacitor for adaptive HF data slicer

VDDA2

16

SUP

analog supply voltage 2

VSSA2

17

SUP

analog ground 2

OSCOUT

18

O

crystal/resonator output

OSCIN

19

I

crystal/resonator input

VSSA3

20

SUP

analog ground 3

DACGND

21

I

audio DAC ground

DACRP

22

O

audio DAC right channel differential positive output

DACRN

23

O

audio DAC right channel differential negative output

DACVref

24

I/O

audio DAC decoupling point (10

µF or 100 nF to ground

DACLN

25

O

audio DAC left channel differential negative output

DACLP

26

O

audio DAC left channel differential positive output

DACVpos

27

I

audio DAC positive supply voltage

BUFVpos

28

I

audio buffer positive supply voltage

BUFINR

29

I

audio buffer right input

BUFOUTR

30

O

audio buffer right output

BUFOUTL

31

O

audio buffer left output

BUFINL

32

I

audio buffer left input

BUFGND

33

I

audio buffer ground

LKILL

34

O

KILL output for left channel (conﬁgurable as open-drain)

RKILL

35

O

KILL output for right channel (conﬁgurable as open-drain)

CDTRDY

36

O

CD text output to microcontroller ready ﬂag

CDTDATA

37

O

CD text output data to microcontroller

CDTCLK

38

I

CD text microcontroller clock input

CFLAG

39

O

correction ﬂag output (open-drain)

VSSD1

40

SUP

digital ground 1

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SAA7824 Datasheet(PDF) 6 Page - NXP Semiconductors

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