TDA7468D13TR

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P21 P22-P23

1/23

TDA7468

April 2010

1 FEATURES

 INPUT MULTIPLEXER

– 4 STEREO INPUTS

– SELECTABLE INPUT GAIN FOR OPTIMAL

ADAPTATION TO DIFFERENT SOURCES

 ONE STEREO OUTPUT

 BASS ALC

 TREBLE AND BASS CONTROL IN 2.0dB

 STEPS

 VOLUME CONTROL IN 1.0dB STEPS

 TWO SPEAKER ATTENUATORS:

– TWO INDEPENDENT SPEAKER CONTROL

IN 1.0dB STEPS FOR BALANCE FACILITY

– INDEPENDENT MUTE FUNCTION

 ALL FUNCTION ARE PROGRAMMABLE VIA

 SERIAL BUS

 EXTERNALLY ADJUSTABLE SURROUND

2 DESCRIPTION

The TDA7468D is a volume tone (bass and treble)

balance (Left/Right) processor for quality audio

applications in Hi-Fi systems.

Selectable input gain is provided. Control of all the

functions is accomplished by serial bus.

The AC signal setting is obtained by resistor net-

works and switches combined with operational

amplifiers.

Thanks to the used BIPOLAR/CMOS Technology,

Low Distortion, Low Noise and DC stepping are

obtained

TWO BANDS DIGITALLY CONTROLLED

AUDIO PROCESSOR WITH BASS ALC SURROUND

Figure 2. PIN CONNECTION (Top view)

IN4_L

MUX_L

IS_L

TREBLE_L

BASSI_L

OUT_L

BASSO_L

DGND

SCL

1

3

2

4

5

6

7

8

9

SDA

ALC

OUT_R

BASSI_R

BASSO_R

IS_R

MUX_R

TREBLE_R

IN4_R23

22

21

20

19

17

18

16

15

D99AU1057

10

11

12

13

14

28

27

26

25

24

V

S

MIC

IN1_L

IN2_L

IN3_L IN3_R

IN2_R

IN1_R

CREF

GND

Rev. 4

Fi

gure 1.

P

ac

k

age

Table 1. Order Codes

Part Number Package

TDA7468D SO28

TDA7468D13TR Tape & Reel

SO28

TDA7468

2/23

Figure 3. BLOCK DIAGRAM

IN-R3

ALC

SUPPLY V

S

GND CREFTREBLE-LMUX-L IS-L

D99AU1058A

I

2

C BUS DECODER + LATCHES

SCL

SDA

OUT-L

OUT-R

+

+

+

TREBLE-R

MUX-R

BASSI-R

IS-R

BASSO-R

50K

50K

50K

TREBLE

gm

gm

buffer gain:

0 to 14dB gain

/ 2dB step

63dB att.

/1dB step

+ 6dB gain

-14 to +14dB

/2dB step

-14 to +14dB

/2dB step

-14 to +14dB

/2dB step

-14 to +14dB

/2dB step

-24 att.

/8dB step

-24 att.

/8dB step

63dB att.

/1dB step

+ 6dB gain

0dB

6dB

9dB

12dB

0dB

6dB

9dB

12dB

non-inverting

inverting

VARIABLE

MIX

VARIABLE

MIX

non-inverting

inverting

0dB, 6dB

10dB, 14dB

INPUT

SELECT

TREBLE

BASS

BASS

BASS_ALC

CONTROL

HALF_WAVE

RECTIFIER

IN-R2

IN-R4

23

24

25

26

2

16

50K

50K

V

REF

BASSO-LBASSI-L

IN-R1

50K

50K

IN-L2

50K

buffer gain:

0 to 14dB gain

/ 2dB step

INPUT

SELECT

IN-L3

IN-L1

3

4

5

6

78 9 10 11 2827

1

DGND

13

12

15

14

17

18

192021

22

MIC-MIX

50K

50K

IN-L4

50K

+

+

3/23

TDA7468

Table 2. ABSOLUTE MAXIMUM RATINGS

Table 3. THERMAL DATA

Table 4. QUICK REFERENCE DATA

Symbol Parameter Value Unit

V

S

Operating Supply Voltage 10.5 V

T

amb

Operating Ambient Temperature 0 to 70 °C

T

stg

Storage Temperature Range -55 to 150 °C

Symbol Parameter Value Unit

R

th j-pin

Thermal Resistance Junction-pins 85 °C/W

Symbol Parameter Min. Typ. Max. Unit

V

S

Supply Voltage 5 9 10 V

V

CL

Max. input signal handling 2 Vrms

THD

Total Harmonic Distortion V

I

= 1Vrms; f = 1KHz

0.01 % %

Total Harmonic Distortion V

I

= 0.1Vrms; f = 1KHz

0.1 %

S/N

Signal to Noise Ratio V

out

= 1Vrms (0dB)

100 dB

S

C

Channel Separation f = 1KHz 90 dB

Input Gain (2dB step) 0 14 dB

Volume Control (1dB step) -87 0 dB

Treble Control (2dB step) -14 +14 dB

Bass Control (2dB step) -14 +14 dB

Mute Attenuation 86 dB

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P21 P22-P23

TDA7468D13TR

Mfr. #:

Buy TDA7468D13TR

Manufacturer:

STMicroelectronics

Description:

Multimedia Misc 2 Bands Digitally Controled Audio Proc

Lifecycle:

New from this manufacturer.

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