TDA7464 datasheet(1/21 Pages) STMICROELECTRONICS

部件名	TDA7464

功能描述	DIGITALLY CONTROLLED AUDIO PROCESSOR WITH SRS SURROUND SOUND AND VOICE CANCELLER

PDF	21 Pages

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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TDA7464

DIGITALLY CONTROLLED AUDIO PROCESSOR WITH

SRS SURROUND SOUND AND VOICE CANCELLER

4 STEREO INPUTS

INPUT ATTENUATION CONTROL IN 0.5dB

STEP

TREBLE MIDDLE AND BASS CONTROL

VOICE CANCELLER IS AVAILABLE

STEREO SRS SURROUND SOUND WITH

CENTER & SPACE CONTROL IS AVAILABLE

THREE STANDARD SURROUND MODES

ARE AVAILABLE:

- MUSIC IN 4 DIFFERENT SELECTABLE

RESPONSES

- MOVIE AND SIMULATED IN 256

DIFFERENT SELECTABLE RESPONSES

2 SPEAKERS OUTPUTS

- INDEPENDENT ATTENUATORS IN 1dB

STEP FOR BALANCE FACILITY

- ZERO CROSSING ATTENUATION AVAILABLE

- INDEPENDENT MUTE FUNCTION

2 RECORD OUTPUTS

- INDEPENDENT ATTENUATORS IN 1dB

STEP FOR BALANCE FACILITY

- MUX AVAILABLE FOR PROCESSES SIGNAL

SELECTION

- INDEPENDENT MUTE FUNCTION

ALL FUNCTIONS PROGRAMMABLE VIA SE-

RIAL BUS

DESCRIPTION

The TDA7464 is a volume tone (bass middle and

treble) balance (Left/Right) processors with stereo

SRS and voice canceller for quality audio applica-

tions in car radio, Hi-Fi, TV systems.

It reproduces SRS (Sound Retrieval System)

sound by external components and surround

sound by using phase shifters and a signal ma-

trix. The AC signal setting is obtained by resistor

networks and switches combined with operational

amplifiers according to the SRS laboratories

specification. Control of all the functions is ac-

complished by serial bus.

Thanks to the used BIPOLAR/CMOS Technology,

Low Distortion, Low Noise and DC stepping are

obtained.

February 1998

ORDERING NUMBER: TDA7464

TQFP44

1

2

3

5

6

4

7

8

9

10

17

11

18 19 20 21 22

44 43 42 41

39

40

38 37 36 35 34

28

27

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24

23

25

33

32

31

29

30

VAR_L

NETW2

NETW1

HP1

LP1

HP2

BASS_LI

BASS_LO

BASSO_R

BASSO_L

VAR_R

L_IN4

RECOUT_L

RECOUT_R

R_OUT

DIG_GND

L_OUT

R_IN1

L_IN1

L_IN2

L_IN3

VREFOUT

D96AU483C

12 13 14 15 16

PIN CONNECTION

The Device incorporates the SRS

(Sound Retrieval System) under

licence from SRS Labs, Inc.

1/21

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	TDA7461D	1Mb / 30P	CAR RADIO SIGNAL PROCESSOR Mar 1998
	TDA7461N	229Kb / 31P	CAR RADIO SIGNAL PROCESSOR Jun-2000

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